🪐

KELT-21 b

Exoplanet Records

📊Key Properties

Host Star

KELT-21

Discovery

Transit

Year

2018

Period

3.61 day

Radius

17.78 Rearth

Mass

1242.72 Mearth

Eq. Temp

2051 K

🧾Records(4 rows)

Record 1

Transit • 2018 • KELT-North

🪐

▶All Properties

Property	Value	Description
ast_flag	0
cb_flag	0
dec	32.58 deg
decstr	+32d34m51.76s	Dec [sexagesimal]
default_flag	1
disc_facility	KELT-North	Discovery Facility
disc_instrument	Apogee 4K CCD Sensor	Discovery Instrument
disc_locale	Ground	Discovery Locale
disc_pubdate	2018-02	Discovery Publication Date
disc_refname	<a refstr=JOHNSON_ET_AL__2018 href=https://ui.adsabs.harvard.edu/abs/2018AJ....155..100J/abstract target=ref>Johnson et al. 2018</a>	Discovery Reference
disc_telescope	Mamiya 645 80mm f/1.9	Discovery Telescope
disc_year	2018
discoverymethod	Transit	Discovery Method
dkin_flag	0
elat	50.29 deg
elon	318.82 deg
etv_flag	0
gaia_dr2_id	Gaia DR2 2054523105274216704	Gaia DR2 ID
gaia_dr3_id	Gaia DR3 2054523105274216704	Gaia DR3 ID
glat	-1.99 deg
glon	71.48 deg
hd_name	HD 332124	HD ID
hip_name	—	HIP ID
hostname	KELT-21	Host Name
htm20	-1070449284
ima_flag	0
micro_flag	0
obm_flag	0
pl_bmasse	1242.72 Mearth
pl_bmasseerr1	—
pl_bmasseerr2	—
pl_bmasselim	1
pl_bmassestr	<1243	Planet Mass or Mass*sin(i) [Earth Mass]
pl_bmassj	3.91 Mjupiter
pl_bmassjerr1	—
pl_bmassjerr2	—
pl_bmassjlim	1
pl_bmassjstr	<3.91	Planet Mass or Mass*sin(i) [Jupiter Mass]
pl_bmassprov	Mass	Planet Mass or Mass*sin(i) Provenance
pl_cmasse	—
pl_cmasseerr1	—
pl_cmasseerr2	—
pl_cmasselim	—
pl_cmassestr	—	Planet Mass*sin(i)/sin(i) [Earth Mass]
pl_cmassj	—
pl_cmassjerr1	—
pl_cmassjerr2	—
pl_cmassjlim	—
pl_cmassjstr	—	Planet Mass*sin(i)/sin(i) [Jupiter Mass]
pl_controv_flag	0
pl_dens	1.24 g/cm**3
pl_denserr1	—
pl_denserr2	—
pl_denslim	1
pl_densstr	<1.24	Planet Density [g/cm**3]
pl_eqt	2051 K
pl_eqterr1	29 K
pl_eqterr2	-30 K
pl_eqtlim	0
pl_eqtstr	<div><span class="supersubNumber">2051</span><span class="superscript">+29</span><span class="subscript">-30</span></div>	Equilibrium Temperature [K]
pl_imppar	0.42
pl_impparerr1	0.03
pl_impparerr2	-0.04
pl_impparlim	0
pl_impparstr	<div><span class="supersubNumber">0.423</span><span class="superscript">+0.033</span><span class="subscript">-0.039</span></div>	Impact Parameter
pl_insol	2950 Searth
pl_insolerr1	169 Searth
pl_insolerr2	-169 Searth
pl_insollim	0
pl_insolstr	2950±169	Insolation Flux [Earth Flux]
pl_letter	b	Planet Letter
pl_masse	1242.72 Mearth
pl_masseerr1	—
pl_masseerr2	—
pl_masselim	1
pl_massestr	<1243	Planet Mass [Earth Mass]
pl_massj	3.91 Mjupiter
pl_massjerr1	—
pl_massjerr2	—
pl_massjlim	1
pl_massjstr	<3.91	Planet Mass [Jupiter Mass]
pl_msinie	1242.72 Mearth
pl_msinieerr1	—
pl_msinieerr2	—
pl_msinielim	1
pl_msiniestr	<1243	Planet Mass*sin(i) [Earth Mass]
pl_msinij	3.91 Mjupiter
pl_msinijerr1	—
pl_msinijerr2	—
pl_msinijlim	1
pl_msinijstr	<3.91	Planet Mass*sin(i) [Jupiter Mass]
pl_name	KELT-21 b	Planet Name
pl_ndispec	0
pl_nespec	0
pl_nnotes	1
pl_ntranspec	0
pl_occdep	—
pl_occdeperr1	—
pl_occdeperr2	—
pl_occdeplim	—
pl_occdepstr	—	Occultation Depth [%]
pl_orbeccen	0
pl_orbeccenerr1	—
pl_orbeccenerr2	—
pl_orbeccenlim	0
pl_orbeccenstr	0	Eccentricity
pl_orbincl	86.46 deg
pl_orbinclerr1	0.38 deg
pl_orbinclerr2	-0.34 deg
pl_orbincllim	0
pl_orbinclstr	<div><span class="supersubNumber">86.46</span><span class="superscript">+0.38</span><span class="subscript">-0.34</span></div>	Inclination [deg]
pl_orblper	—
pl_orblpererr1	—
pl_orblpererr2	—
pl_orblperlim	—
pl_orblperstr	—	Argument of Periastron [deg]
pl_orbper	3.61 day
pl_orbpererr1	3.30e-6 day
pl_orbpererr2	-3.30e-6 day
pl_orbperlim	0
pl_orbperstr	3.6127647±0.0000033	Orbital Period [day]
pl_orbsmax	0.05 au
pl_orbsmaxerr1	3.50e-4 au
pl_orbsmaxerr2	-3.40e-4 au
pl_orbsmaxlim	0
pl_orbsmaxstr	<div><span class="supersubNumber">0.05224</span><span class="superscript">+0.00035</span><span class="subscript">-0.00034</span></div>	Orbit Semi-Major Axis [au]
pl_orbtper	—
pl_orbtpererr1	—
pl_orbtpererr2	—
pl_orbtperlim	—
pl_orbtperstr	—	Epoch of Periastron [day]
pl_projobliq	-5.60 deg
pl_projobliqerr1	1.70 deg
pl_projobliqerr2	-1.90 deg
pl_projobliqlim	0
pl_projobliqstr	<div><span class="supersubNumber">-5.6</span> <span class="superscript">+1.7</span><span class="subscript">-1.9</span></div>	Projected Obliquity [deg]
pl_pubdate	2018-02	Planetary Parameter Reference Publication Date
pl_rade	17.78 Rearth
pl_radeerr1	0.44 Rearth
pl_radeerr2	-0.45 Rearth
pl_radelim	0
pl_radestr	<div><span class="supersubNumber">17.78</span><span class="superscript">+0.44</span><span class="subscript">-0.45</span></div>	Planet Radius [Earth Radius]
pl_radj	1.59 Rjupiter
pl_radjerr1	0.04 Rjupiter
pl_radjerr2	-0.04 Rjupiter
pl_radjlim	0
pl_radjstr	<div><span class="supersubNumber">1.586</span><span class="superscript">+0.039</span><span class="subscript">-0.040</span></div>	Planet Radius [Jupiter Radius]
pl_ratdor	6.86
pl_ratdorerr1	0.13
pl_ratdorerr2	-0.12
pl_ratdorlim	0
pl_ratdorstr	<div><span class="supersubNumber">6.86</span><span class="superscript">+0.13</span><span class="subscript">-0.12</span></div>	Ratio of Semi-Major Axis to Stellar Radius
pl_ratror	0.10
pl_ratrorerr1	7.10e-4
pl_ratrorerr2	-7.30e-4
pl_ratrorlim	0
pl_ratrorstr	<div><span class="supersubNumber">0.099520</span><span class="superscript">+0.000710</span><span class="subscript">-0.000730</span></div>	Ratio of Planet to Stellar Radius
pl_refname	<a refstr=JOHNSON_ET_AL__2018 href=https://ui.adsabs.harvard.edu/abs/2018AJ....155..100J/abstract target=ref>Johnson et al. 2018</a>	Planetary Parameter Reference
pl_rvamp	399.60 m/s
pl_rvamperr1	—
pl_rvamperr2	—
pl_rvamplim	1
pl_rvampstr	<399.6	Radial Velocity Amplitude [m/s]
pl_trandep	0.99 %
pl_trandeperr1	0.01 %
pl_trandeperr2	-0.01 %
pl_trandeplim	0
pl_trandepstr	0.9900±0.0140	Transit Depth [%]
pl_trandur	4.11 hour
pl_trandurerr1	0.02 hour
pl_trandurerr2	-0.02 hour
pl_trandurlim	0
pl_trandurstr	<div><span class="supersubNumber">4.1054</span><span class="superscript">+0.0218</span><span class="subscript">-0.0221</span></div>	Transit Duration [hour]
pl_tranmid	2.46e6 day
pl_tranmiderr1	4.10e-4 day
pl_tranmiderr2	-4.20e-4 day
pl_tranmidlim	0
pl_tranmidstr	<div><span class="supersubNumber">2457295.93434</span><span class="superscript">+0.00041</span><span class="subscript">-0.00042</span></div>	Time of Conjunction (Transit Midpoint) [day]
pl_trueobliq	—
pl_trueobliqerr1	—
pl_trueobliqerr2	—
pl_trueobliqlim	—
pl_trueobliqstr	—	True Obliquity [deg]
pl_tsystemref	BJD-TDB	Time Reference Frame and Standard
ptv_flag	0
pul_flag	0
ra	304.80 deg
rastr	20h19m12.01s	RA [sexagesimal]
releasedate	2018-02-01	Release Date
rowupdate	2018-02-01	Date of Last Update
rv_flag	0
soltype	Published Confirmed	Solution Type
st_age	1.60 Gyr
st_ageerr1	0.10 Gyr
st_ageerr2	-0.10 Gyr
st_agelim	0
st_agestr	1.6±0.1	Stellar Age [Gyr]
st_dens	0.47 g/cm**3
st_denserr1	0.03 g/cm**3
st_denserr2	-0.02 g/cm**3
st_denslim	0
st_densstr	<div><span class="supersubNumber">0.468</span><span class="superscript">+0.026</span><span class="subscript">-0.024</span></div>	Stellar Density [g/cm**3]
st_logg	4.17 log(cm/s**2)
st_loggerr1	0.01 log(cm/s**2)
st_loggerr2	-0.01 log(cm/s**2)
st_logglim	0
st_loggstr	<div><span class="supersubNumber">4.173</span><span class="superscript">+0.015</span><span class="subscript">-0.014</span></div>	Stellar Surface Gravity [log(cm/s**2)]
st_lum	0.90 log(Lsun)
st_lumerr1	0.03 log(Lsun)
st_lumerr2	-0.03 log(Lsun)
st_lumlim	0
st_lumstr	<div><span class="supersubNumber">0.905</span><span class="superscript">+0.028</span><span class="subscript">-0.030</span></div>	Stellar Luminosity [log(Solar)]
st_mass	1.46 Msun
st_masserr1	0.03 Msun
st_masserr2	-0.03 Msun
st_masslim	0
st_massstr	<div><span class="supersubNumber">1.458</span><span class="superscript">+0.029</span><span class="subscript">-0.028</span></div>	Stellar Mass [Solar mass]
st_met	-0.41 dex
st_meterr1	0.03 dex
st_meterr2	-0.03 dex
st_metlim	0
st_metratio	[Fe/H]	Stellar Metallicity Ratio
st_metstr	<div><span class="supersubNumber">-0.405</span><span class="superscript">+0.032</span><span class="subscript">-0.033</span></div>	Stellar Metallicity [dex]
st_nphot	0
st_nrvc	0
st_nspec	0
st_rad	1.64 Rsun
st_raderr1	0.03 Rsun
st_raderr2	-0.03 Rsun
st_radlim	0
st_radstr	1.638±0.034	Stellar Radius [Solar Radius]
st_radv	-13 km/s
st_radverr1	1 km/s
st_radverr2	-1 km/s
st_radvlim	0
st_radvstr	-13.0±1.0	Systemic Radial Velocity [km/s]
st_refname	<a refstr=JOHNSON_ET_AL__2018 href=https://ui.adsabs.harvard.edu/abs/2018AJ....155..100J/abstract target=ref>Johnson et al. 2018</a>	Stellar Parameter Reference
st_rotp	—
st_rotperr1	—
st_rotperr2	—
st_rotplim	—
st_rotpstr	—	Stellar Rotational Period [day]
st_spectype	A8 V	Spectral Type
st_teff	7598 K
st_tefferr1	81 K
st_tefferr2	-84 K
st_tefflim	0
st_teffstr	<div><span class="supersubNumber">7598</span><span class="superscript">+81</span><span class="subscript">-84</span></div>	Stellar Effective Temperature [K]
st_vsin	146.03 km/s
st_vsinerr1	0.48 km/s
st_vsinerr2	-0.48 km/s
st_vsinlim	0
st_vsinstr	146.03±0.48	Stellar Rotational Velocity [km/s]
sy_bmag	10.76 mag
sy_bmagerr1	0.08 mag
sy_bmagerr2	-0.08 mag
sy_bmagstr	10.763±0.082	B (Johnson) Magnitude
sy_dist	470.88 pc
sy_disterr1	6.47 pc
sy_disterr2	-6.30 pc
sy_diststr	<div><span class="supersubNumber">470.878</span><span class="superscript">+6.471</span><span class="subscript">-6.300</span></div>	Distance [pc]
sy_gaiamag	10.54 mag
sy_gaiamagerr1	2.78e-4 mag
sy_gaiamagerr2	-2.78e-4 mag
sy_gaiamagstr	10.541500±0.000278	Gaia Magnitude
sy_gmag	—
sy_gmagerr1	—
sy_gmagerr2	—
sy_gmagstr	—	g (Sloan) Magnitude
sy_hmag	10.12 mag
sy_hmagerr1	0.02 mag
sy_hmagerr2	-0.02 mag
sy_hmagstr	10.121±0.021	H (2MASS) Magnitude
sy_icmag	—
sy_icmagerr1	—
sy_icmagerr2	—
sy_icmagstr	—	I (Cousins) Magnitude
sy_imag	—
sy_imagerr1	—
sy_imagerr2	—
sy_imagstr	—	i (Sloan) Magnitude
sy_jmag	10.15 mag
sy_jmagerr1	0.02 mag
sy_jmagerr2	-0.02 mag
sy_jmagstr	10.149±0.022	J (2MASS) Magnitude
sy_kepmag	—
sy_kepmagerr1	—
sy_kepmagerr2	—
sy_kepmagstr	—	Kepler Magnitude
sy_kmag	10.09 mag
sy_kmagerr1	0.01 mag
sy_kmagerr2	-0.01 mag
sy_kmagstr	10.090±0.014	Ks (2MASS) Magnitude
sy_mnum	0
sy_plx	2.10 mas
sy_plxerr1	0.03 mas
sy_plxerr2	-0.03 mas
sy_plxstr	2.095300±0.028577	Parallax [mas]
sy_pm	2.24 mas/yr
sy_pmdec	-0.11 mas/yr
sy_pmdecerr1	0.05 mas/yr
sy_pmdecerr2	-0.05 mas/yr
sy_pmdecstr	-0.1125450±0.0473294	Proper Motion (Dec) [mas/yr]
sy_pmerr1	0.04 mas/yr
sy_pmerr2	-0.04 mas/yr
sy_pmra	2.24 mas/yr
sy_pmraerr1	0.04 mas/yr
sy_pmraerr2	-0.04 mas/yr
sy_pmrastr	2.2392000±0.0425471	Proper Motion (RA) [mas/yr]
sy_pmstr	2.2420265±0.0425598	Total Proper Motion [mas/yr]
sy_pnum	1
sy_refname	<a refstr=STASSUN_ET_AL__2019 href=https://ui.adsabs.harvard.edu/abs/2019AJ....158..138S/abstract target=ref>TICv8</a>	System Parameter Reference
sy_rmag	—
sy_rmagerr1	—
sy_rmagerr2	—
sy_rmagstr	—	r (Sloan) Magnitude
sy_snum	1
sy_tmag	10.42 mag
sy_tmagerr1	6.10e-3 mag
sy_tmagerr2	-6.10e-3 mag
sy_tmagstr	10.4219±0.0061	TESS Magnitude
sy_umag	—
sy_umagerr1	—
sy_umagerr2	—
sy_umagstr	—	u (Sloan) Magnitude
sy_vmag	10.48 mag
sy_vmagerr1	6.00e-3 mag
sy_vmagerr2	-6.00e-3 mag
sy_vmagstr	10.484±0.006	V (Johnson) Magnitude
sy_w1mag	10.06 mag
sy_w1magerr1	0.02 mag
sy_w1magerr2	-0.02 mag
sy_w1magstr	10.064±0.022	W1 (WISE) Magnitude
sy_w2mag	10.11 mag
sy_w2magerr1	0.02 mag
sy_w2magerr2	-0.02 mag
sy_w2magstr	10.106±0.021	W2 (WISE) Magnitude
sy_w3mag	10.25 mag
sy_w3magerr1	0.07 mag
sy_w3magerr2	-0.07 mag
sy_w3magstr	10.252±0.069	W3 (WISE) Magnitude
sy_w4mag	9.16 mag
sy_w4magerr1	—
sy_w4magerr2	—
sy_w4magstr	9.158	W4 (WISE) Magnitude
sy_zmag	—
sy_zmagerr1	—
sy_zmagerr2	—
sy_zmagstr	—	z (Sloan) Magnitude
tic_id	TIC 203189770	TIC ID
tran_flag	1
ttv_flag	0
x	0.48
y	-0.69
z	0.54

Record 2

Transit • 2018 • KELT-North

🪐

▶All Properties

Property	Value	Description
ast_flag	0
cb_flag	0
dec	32.58 deg
decstr	+32d34m51.76s	Dec [sexagesimal]
default_flag	0
disc_facility	KELT-North	Discovery Facility
disc_instrument	Apogee 4K CCD Sensor	Discovery Instrument
disc_locale	Ground	Discovery Locale
disc_pubdate	2018-02	Discovery Publication Date
disc_refname	<a refstr=JOHNSON_ET_AL__2018 href=https://ui.adsabs.harvard.edu/abs/2018AJ....155..100J/abstract target=ref>Johnson et al. 2018</a>	Discovery Reference
disc_telescope	Mamiya 645 80mm f/1.9	Discovery Telescope
disc_year	2018
discoverymethod	Transit	Discovery Method
dkin_flag	0
elat	50.29 deg
elon	318.82 deg
etv_flag	0
gaia_dr2_id	Gaia DR2 2054523105274216704	Gaia DR2 ID
gaia_dr3_id	Gaia DR3 2054523105274216704	Gaia DR3 ID
glat	-1.99 deg
glon	71.48 deg
hd_name	HD 332124	HD ID
hip_name	—	HIP ID
hostname	KELT-21	Host Name
htm20	-1070449284
ima_flag	0
micro_flag	0
obm_flag	0
pl_bmasse	—
pl_bmasseerr1	—
pl_bmasseerr2	—
pl_bmasselim	—
pl_bmassestr	—	Planet Mass or Mass*sin(i) [Earth Mass]
pl_bmassj	—
pl_bmassjerr1	—
pl_bmassjerr2	—
pl_bmassjlim	—
pl_bmassjstr	—	Planet Mass or Mass*sin(i) [Jupiter Mass]
pl_bmassprov	—	Planet Mass or Mass*sin(i) Provenance
pl_cmasse	—
pl_cmasseerr1	—
pl_cmasseerr2	—
pl_cmasselim	—
pl_cmassestr	—	Planet Mass*sin(i)/sin(i) [Earth Mass]
pl_cmassj	—
pl_cmassjerr1	—
pl_cmassjerr2	—
pl_cmassjlim	—
pl_cmassjstr	—	Planet Mass*sin(i)/sin(i) [Jupiter Mass]
pl_controv_flag	0
pl_dens	—
pl_denserr1	—
pl_denserr2	—
pl_denslim	—
pl_densstr	—	Planet Density [g/cm**3]
pl_eqt	—
pl_eqterr1	—
pl_eqterr2	—
pl_eqtlim	—
pl_eqtstr	—	Equilibrium Temperature [K]
pl_imppar	—
pl_impparerr1	—
pl_impparerr2	—
pl_impparlim	—
pl_impparstr	—	Impact Parameter
pl_insol	—
pl_insolerr1	—
pl_insolerr2	—
pl_insollim	—
pl_insolstr	—	Insolation Flux [Earth Flux]
pl_letter	b	Planet Letter
pl_masse	—
pl_masseerr1	—
pl_masseerr2	—
pl_masselim	—
pl_massestr	—	Planet Mass [Earth Mass]
pl_massj	—
pl_massjerr1	—
pl_massjerr2	—
pl_massjlim	—
pl_massjstr	—	Planet Mass [Jupiter Mass]
pl_msinie	—
pl_msinieerr1	—
pl_msinieerr2	—
pl_msinielim	—
pl_msiniestr	—	Planet Mass*sin(i) [Earth Mass]
pl_msinij	—
pl_msinijerr1	—
pl_msinijerr2	—
pl_msinijlim	—
pl_msinijstr	—	Planet Mass*sin(i) [Jupiter Mass]
pl_name	KELT-21 b	Planet Name
pl_ndispec	0
pl_nespec	0
pl_nnotes	1
pl_ntranspec	0
pl_occdep	—
pl_occdeperr1	—
pl_occdeperr2	—
pl_occdeplim	—
pl_occdepstr	—	Occultation Depth [%]
pl_orbeccen	—
pl_orbeccenerr1	—
pl_orbeccenerr2	—
pl_orbeccenlim	—
pl_orbeccenstr	—	Eccentricity
pl_orbincl	—
pl_orbinclerr1	—
pl_orbinclerr2	—
pl_orbincllim	—
pl_orbinclstr	—	Inclination [deg]
pl_orblper	—
pl_orblpererr1	—
pl_orblpererr2	—
pl_orblperlim	—
pl_orblperstr	—	Argument of Periastron [deg]
pl_orbper	3.61 day
pl_orbpererr1	1.20e-6 day
pl_orbpererr2	-1.20e-6 day
pl_orbperlim	0
pl_orbperstr	3.6127691±0.0000012	Orbital Period [day]
pl_orbsmax	—
pl_orbsmaxerr1	—
pl_orbsmaxerr2	—
pl_orbsmaxlim	—
pl_orbsmaxstr	—	Orbit Semi-Major Axis [au]
pl_orbtper	—
pl_orbtpererr1	—
pl_orbtpererr2	—
pl_orbtperlim	—
pl_orbtperstr	—	Epoch of Periastron [day]
pl_projobliq	—
pl_projobliqerr1	—
pl_projobliqerr2	—
pl_projobliqlim	—
pl_projobliqstr	—	Projected Obliquity [deg]
pl_pubdate	2022-04	Planetary Parameter Reference Publication Date
pl_rade	—
pl_radeerr1	—
pl_radeerr2	—
pl_radelim	—
pl_radestr	—	Planet Radius [Earth Radius]
pl_radj	—
pl_radjerr1	—
pl_radjerr2	—
pl_radjlim	—
pl_radjstr	—	Planet Radius [Jupiter Radius]
pl_ratdor	—
pl_ratdorerr1	—
pl_ratdorerr2	—
pl_ratdorlim	—
pl_ratdorstr	—	Ratio of Semi-Major Axis to Stellar Radius
pl_ratror	—
pl_ratrorerr1	—
pl_ratrorerr2	—
pl_ratrorlim	—
pl_ratrorstr	—	Ratio of Planet to Stellar Radius
pl_refname	<a refstr=IVSHINA__AMP__WINN_2022 href=https://ui.adsabs.harvard.edu/abs/2022ApJS..259...62I/abstract target=ref>Ivshina & Winn 2022</a>	Planetary Parameter Reference
pl_rvamp	—
pl_rvamperr1	—
pl_rvamperr2	—
pl_rvamplim	—
pl_rvampstr	—	Radial Velocity Amplitude [m/s]
pl_trandep	—
pl_trandeperr1	—
pl_trandeperr2	—
pl_trandeplim	—
pl_trandepstr	—	Transit Depth [%]
pl_trandur	—
pl_trandurerr1	—
pl_trandurerr2	—
pl_trandurlim	—
pl_trandurstr	—	Transit Duration [hour]
pl_tranmid	2.46e6 day
pl_tranmiderr1	3.50e-4 day
pl_tranmiderr2	-3.50e-4 day
pl_tranmidlim	0
pl_tranmidstr	2457902.87891±0.00035	Time of Conjunction (Transit Midpoint) [day]
pl_trueobliq	—
pl_trueobliqerr1	—
pl_trueobliqerr2	—
pl_trueobliqlim	—
pl_trueobliqstr	—	True Obliquity [deg]
pl_tsystemref	BJD-TDB	Time Reference Frame and Standard
ptv_flag	0
pul_flag	0
ra	304.80 deg
rastr	20h19m12.01s	RA [sexagesimal]
releasedate	2022-10-18	Release Date
rowupdate	2022-10-18	Date of Last Update
rv_flag	0
soltype	Published Confirmed	Solution Type
st_age	—
st_ageerr1	—
st_ageerr2	—
st_agelim	—
st_agestr	—	Stellar Age [Gyr]
st_dens	—
st_denserr1	—
st_denserr2	—
st_denslim	—
st_densstr	—	Stellar Density [g/cm**3]
st_logg	—
st_loggerr1	—
st_loggerr2	—
st_logglim	—
st_loggstr	—	Stellar Surface Gravity [log(cm/s**2)]
st_lum	—
st_lumerr1	—
st_lumerr2	—
st_lumlim	—
st_lumstr	—	Stellar Luminosity [log(Solar)]
st_mass	—
st_masserr1	—
st_masserr2	—
st_masslim	—
st_massstr	—	Stellar Mass [Solar mass]
st_met	—
st_meterr1	—
st_meterr2	—
st_metlim	—
st_metratio	—	Stellar Metallicity Ratio
st_metstr	—	Stellar Metallicity [dex]
st_nphot	0
st_nrvc	0
st_nspec	0
st_rad	—
st_raderr1	—
st_raderr2	—
st_radlim	—
st_radstr	—	Stellar Radius [Solar Radius]
st_radv	—
st_radverr1	—
st_radverr2	—
st_radvlim	—
st_radvstr	—	Systemic Radial Velocity [km/s]
st_refname	—	Stellar Parameter Reference
st_rotp	—
st_rotperr1	—
st_rotperr2	—
st_rotplim	—
st_rotpstr	—	Stellar Rotational Period [day]
st_spectype	—	Spectral Type
st_teff	—
st_tefferr1	—
st_tefferr2	—
st_tefflim	—
st_teffstr	—	Stellar Effective Temperature [K]
st_vsin	—
st_vsinerr1	—
st_vsinerr2	—
st_vsinlim	—
st_vsinstr	—	Stellar Rotational Velocity [km/s]
sy_bmag	10.76 mag
sy_bmagerr1	0.08 mag
sy_bmagerr2	-0.08 mag
sy_bmagstr	10.763±0.082	B (Johnson) Magnitude
sy_dist	470.88 pc
sy_disterr1	6.47 pc
sy_disterr2	-6.30 pc
sy_diststr	<div><span class="supersubNumber">470.878</span><span class="superscript">+6.471</span><span class="subscript">-6.300</span></div>	Distance [pc]
sy_gaiamag	10.54 mag
sy_gaiamagerr1	2.78e-4 mag
sy_gaiamagerr2	-2.78e-4 mag
sy_gaiamagstr	10.541500±0.000278	Gaia Magnitude
sy_gmag	—
sy_gmagerr1	—
sy_gmagerr2	—
sy_gmagstr	—	g (Sloan) Magnitude
sy_hmag	10.12 mag
sy_hmagerr1	0.02 mag
sy_hmagerr2	-0.02 mag
sy_hmagstr	10.121±0.021	H (2MASS) Magnitude
sy_icmag	—
sy_icmagerr1	—
sy_icmagerr2	—
sy_icmagstr	—	I (Cousins) Magnitude
sy_imag	—
sy_imagerr1	—
sy_imagerr2	—
sy_imagstr	—	i (Sloan) Magnitude
sy_jmag	10.15 mag
sy_jmagerr1	0.02 mag
sy_jmagerr2	-0.02 mag
sy_jmagstr	10.149±0.022	J (2MASS) Magnitude
sy_kepmag	—
sy_kepmagerr1	—
sy_kepmagerr2	—
sy_kepmagstr	—	Kepler Magnitude
sy_kmag	10.09 mag
sy_kmagerr1	0.01 mag
sy_kmagerr2	-0.01 mag
sy_kmagstr	10.090±0.014	Ks (2MASS) Magnitude
sy_mnum	0
sy_plx	2.10 mas
sy_plxerr1	0.03 mas
sy_plxerr2	-0.03 mas
sy_plxstr	2.095300±0.028577	Parallax [mas]
sy_pm	2.24 mas/yr
sy_pmdec	-0.11 mas/yr
sy_pmdecerr1	0.05 mas/yr
sy_pmdecerr2	-0.05 mas/yr
sy_pmdecstr	-0.1125450±0.0473294	Proper Motion (Dec) [mas/yr]
sy_pmerr1	0.04 mas/yr
sy_pmerr2	-0.04 mas/yr
sy_pmra	2.24 mas/yr
sy_pmraerr1	0.04 mas/yr
sy_pmraerr2	-0.04 mas/yr
sy_pmrastr	2.2392000±0.0425471	Proper Motion (RA) [mas/yr]
sy_pmstr	2.2420265±0.0425598	Total Proper Motion [mas/yr]
sy_pnum	1
sy_refname	<a refstr=STASSUN_ET_AL__2019 href=https://ui.adsabs.harvard.edu/abs/2019AJ....158..138S/abstract target=ref>TICv8</a>	System Parameter Reference
sy_rmag	—
sy_rmagerr1	—
sy_rmagerr2	—
sy_rmagstr	—	r (Sloan) Magnitude
sy_snum	1
sy_tmag	10.42 mag
sy_tmagerr1	6.10e-3 mag
sy_tmagerr2	-6.10e-3 mag
sy_tmagstr	10.4219±0.0061	TESS Magnitude
sy_umag	—
sy_umagerr1	—
sy_umagerr2	—
sy_umagstr	—	u (Sloan) Magnitude
sy_vmag	10.48 mag
sy_vmagerr1	6.00e-3 mag
sy_vmagerr2	-6.00e-3 mag
sy_vmagstr	10.484±0.006	V (Johnson) Magnitude
sy_w1mag	10.06 mag
sy_w1magerr1	0.02 mag
sy_w1magerr2	-0.02 mag
sy_w1magstr	10.064±0.022	W1 (WISE) Magnitude
sy_w2mag	10.11 mag
sy_w2magerr1	0.02 mag
sy_w2magerr2	-0.02 mag
sy_w2magstr	10.106±0.021	W2 (WISE) Magnitude
sy_w3mag	10.25 mag
sy_w3magerr1	0.07 mag
sy_w3magerr2	-0.07 mag
sy_w3magstr	10.252±0.069	W3 (WISE) Magnitude
sy_w4mag	9.16 mag
sy_w4magerr1	—
sy_w4magerr2	—
sy_w4magstr	9.158	W4 (WISE) Magnitude
sy_zmag	—
sy_zmagerr1	—
sy_zmagerr2	—
sy_zmagstr	—	z (Sloan) Magnitude
tic_id	TIC 203189770	TIC ID
tran_flag	1
ttv_flag	0
x	0.48
y	-0.69
z	0.54

Record 3

Transit • 2018 • KELT-North

🪐

▶All Properties

Property	Value	Description
ast_flag	0
cb_flag	0
dec	32.58 deg
decstr	+32d34m51.76s	Dec [sexagesimal]
default_flag	0
disc_facility	KELT-North	Discovery Facility
disc_instrument	Apogee 4K CCD Sensor	Discovery Instrument
disc_locale	Ground	Discovery Locale
disc_pubdate	2018-02	Discovery Publication Date
disc_refname	<a refstr=JOHNSON_ET_AL__2018 href=https://ui.adsabs.harvard.edu/abs/2018AJ....155..100J/abstract target=ref>Johnson et al. 2018</a>	Discovery Reference
disc_telescope	Mamiya 645 80mm f/1.9	Discovery Telescope
disc_year	2018
discoverymethod	Transit	Discovery Method
dkin_flag	0
elat	50.29 deg
elon	318.82 deg
etv_flag	0
gaia_dr2_id	Gaia DR2 2054523105274216704	Gaia DR2 ID
gaia_dr3_id	Gaia DR3 2054523105274216704	Gaia DR3 ID
glat	-1.99 deg
glon	71.48 deg
hd_name	HD 332124	HD ID
hip_name	—	HIP ID
hostname	KELT-21	Host Name
htm20	-1070449284
ima_flag	0
micro_flag	0
obm_flag	0
pl_bmasse	—
pl_bmasseerr1	—
pl_bmasseerr2	—
pl_bmasselim	—
pl_bmassestr	—	Planet Mass or Mass*sin(i) [Earth Mass]
pl_bmassj	—
pl_bmassjerr1	—
pl_bmassjerr2	—
pl_bmassjlim	—
pl_bmassjstr	—	Planet Mass or Mass*sin(i) [Jupiter Mass]
pl_bmassprov	—	Planet Mass or Mass*sin(i) Provenance
pl_cmasse	—
pl_cmasseerr1	—
pl_cmasseerr2	—
pl_cmasselim	—
pl_cmassestr	—	Planet Mass*sin(i)/sin(i) [Earth Mass]
pl_cmassj	—
pl_cmassjerr1	—
pl_cmassjerr2	—
pl_cmassjlim	—
pl_cmassjstr	—	Planet Mass*sin(i)/sin(i) [Jupiter Mass]
pl_controv_flag	0
pl_dens	—
pl_denserr1	—
pl_denserr2	—
pl_denslim	—
pl_densstr	—	Planet Density [g/cm**3]
pl_eqt	—
pl_eqterr1	—
pl_eqterr2	—
pl_eqtlim	—
pl_eqtstr	—	Equilibrium Temperature [K]
pl_imppar	—
pl_impparerr1	—
pl_impparerr2	—
pl_impparlim	—
pl_impparstr	—	Impact Parameter
pl_insol	—
pl_insolerr1	—
pl_insolerr2	—
pl_insollim	—
pl_insolstr	—	Insolation Flux [Earth Flux]
pl_letter	b	Planet Letter
pl_masse	—
pl_masseerr1	—
pl_masseerr2	—
pl_masselim	—
pl_massestr	—	Planet Mass [Earth Mass]
pl_massj	—
pl_massjerr1	—
pl_massjerr2	—
pl_massjlim	—
pl_massjstr	—	Planet Mass [Jupiter Mass]
pl_msinie	—
pl_msinieerr1	—
pl_msinieerr2	—
pl_msinielim	—
pl_msiniestr	—	Planet Mass*sin(i) [Earth Mass]
pl_msinij	—
pl_msinijerr1	—
pl_msinijerr2	—
pl_msinijlim	—
pl_msinijstr	—	Planet Mass*sin(i) [Jupiter Mass]
pl_name	KELT-21 b	Planet Name
pl_ndispec	0
pl_nespec	0
pl_nnotes	1
pl_ntranspec	0
pl_occdep	—
pl_occdeperr1	—
pl_occdeperr2	—
pl_occdeplim	—
pl_occdepstr	—	Occultation Depth [%]
pl_orbeccen	—
pl_orbeccenerr1	—
pl_orbeccenerr2	—
pl_orbeccenlim	—
pl_orbeccenstr	—	Eccentricity
pl_orbincl	86.46 deg
pl_orbinclerr1	0.38 deg
pl_orbinclerr2	-0.34 deg
pl_orbincllim	0
pl_orbinclstr	<div><span class="supersubNumber">86.46</span><span class="superscript">+0.38</span><span class="subscript">-0.34</span></div>	Inclination [deg]
pl_orblper	—
pl_orblpererr1	—
pl_orblpererr2	—
pl_orblperlim	—
pl_orblperstr	—	Argument of Periastron [deg]
pl_orbper	3.61 day
pl_orbpererr1	9.50e-7 day
pl_orbpererr2	-9.50e-7 day
pl_orbperlim	0
pl_orbperstr	3.61276958±0.00000095	Orbital Period [day]
pl_orbsmax	—
pl_orbsmaxerr1	—
pl_orbsmaxerr2	—
pl_orbsmaxlim	—
pl_orbsmaxstr	—	Orbit Semi-Major Axis [au]
pl_orbtper	—
pl_orbtpererr1	—
pl_orbtpererr2	—
pl_orbtperlim	—
pl_orbtperstr	—	Epoch of Periastron [day]
pl_projobliq	—
pl_projobliqerr1	—
pl_projobliqerr2	—
pl_projobliqlim	—
pl_projobliqstr	—	Projected Obliquity [deg]
pl_pubdate	2023-03	Planetary Parameter Reference Publication Date
pl_rade	—
pl_radeerr1	—
pl_radeerr2	—
pl_radelim	—
pl_radestr	—	Planet Radius [Earth Radius]
pl_radj	—
pl_radjerr1	—
pl_radjerr2	—
pl_radjlim	—
pl_radjstr	—	Planet Radius [Jupiter Radius]
pl_ratdor	6.86
pl_ratdorerr1	0.13
pl_ratdorerr2	-0.12
pl_ratdorlim	0
pl_ratdorstr	<div><span class="supersubNumber">6.86</span><span class="superscript">+0.13</span><span class="subscript">-0.12</span></div>	Ratio of Semi-Major Axis to Stellar Radius
pl_ratror	0.10
pl_ratrorerr1	7.10e-4
pl_ratrorerr2	-7.10e-4
pl_ratrorlim	0
pl_ratrorstr	0.099520±0.000710	Ratio of Planet to Stellar Radius
pl_refname	<a refstr=KOKORI_ET_AL__2023 href=https://ui.adsabs.harvard.edu/abs/2023ApJS..265....4K/abstract target=ref>Kokori et al. 2023</a>	Planetary Parameter Reference
pl_rvamp	—
pl_rvamperr1	—
pl_rvamperr2	—
pl_rvamplim	—
pl_rvampstr	—	Radial Velocity Amplitude [m/s]
pl_trandep	—
pl_trandeperr1	—
pl_trandeperr2	—
pl_trandeplim	—
pl_trandepstr	—	Transit Depth [%]
pl_trandur	—
pl_trandurerr1	—
pl_trandurerr2	—
pl_trandurlim	—
pl_trandurstr	—	Transit Duration [hour]
pl_tranmid	2.46e6 day
pl_tranmiderr1	2.30e-4 day
pl_tranmiderr2	-2.30e-4 day
pl_tranmidlim	0
pl_tranmidstr	2458881.93965±0.00023	Time of Conjunction (Transit Midpoint) [day]
pl_trueobliq	—
pl_trueobliqerr1	—
pl_trueobliqerr2	—
pl_trueobliqlim	—
pl_trueobliqstr	—	True Obliquity [deg]
pl_tsystemref	BJD-TDB	Time Reference Frame and Standard
ptv_flag	0
pul_flag	0
ra	304.80 deg
rastr	20h19m12.01s	RA [sexagesimal]
releasedate	2024-03-04	Release Date
rowupdate	2024-03-04	Date of Last Update
rv_flag	0
soltype	Published Confirmed	Solution Type
st_age	1.60 Gyr
st_ageerr1	0.10 Gyr
st_ageerr2	-0.10 Gyr
st_agelim	0
st_agestr	1.6±0.1	Stellar Age [Gyr]
st_dens	0.47 g/cm**3
st_denserr1	0.03 g/cm**3
st_denserr2	-0.02 g/cm**3
st_denslim	0
st_densstr	<div><span class="supersubNumber">0.468</span><span class="superscript">+0.026</span><span class="subscript">-0.024</span></div>	Stellar Density [g/cm**3]
st_logg	4.17 log(cm/s**2)
st_loggerr1	0.01 log(cm/s**2)
st_loggerr2	-0.01 log(cm/s**2)
st_logglim	0
st_loggstr	<div><span class="supersubNumber">4.173</span><span class="superscript">+0.015</span><span class="subscript">-0.014</span></div>	Stellar Surface Gravity [log(cm/s**2)]
st_lum	0.90 log(Lsun)
st_lumerr1	0.03 log(Lsun)
st_lumerr2	-0.03 log(Lsun)
st_lumlim	0
st_lumstr	<div><span class="supersubNumber">0.905</span><span class="superscript">+0.028</span><span class="subscript">-0.030</span></div>	Stellar Luminosity [log(Solar)]
st_mass	1.46 Msun
st_masserr1	0.03 Msun
st_masserr2	-0.03 Msun
st_masslim	0
st_massstr	<div><span class="supersubNumber">1.458</span><span class="superscript">+0.029</span><span class="subscript">-0.028</span></div>	Stellar Mass [Solar mass]
st_met	-0.41 dex
st_meterr1	0.03 dex
st_meterr2	-0.03 dex
st_metlim	0
st_metratio	[Fe/H]	Stellar Metallicity Ratio
st_metstr	<div><span class="supersubNumber">-0.405</span><span class="superscript">+0.032</span><span class="subscript">-0.033</span></div>	Stellar Metallicity [dex]
st_nphot	0
st_nrvc	0
st_nspec	0
st_rad	1.64 Rsun
st_raderr1	0.03 Rsun
st_raderr2	-0.03 Rsun
st_radlim	0
st_radstr	1.638±0.034	Stellar Radius [Solar Radius]
st_radv	-13 km/s
st_radverr1	1 km/s
st_radverr2	-1 km/s
st_radvlim	0
st_radvstr	-13.0±1.0	Systemic Radial Velocity [km/s]
st_refname	<a refstr=JOHNSON_ET_AL__2018 href=https://ui.adsabs.harvard.edu/abs/2018AJ....155..100J/abstract target=ref>Johnson et al. 2018</a>	Stellar Parameter Reference
st_rotp	—
st_rotperr1	—
st_rotperr2	—
st_rotplim	—
st_rotpstr	—	Stellar Rotational Period [day]
st_spectype	A8 V	Spectral Type
st_teff	7598 K
st_tefferr1	81 K
st_tefferr2	-84 K
st_tefflim	0
st_teffstr	<div><span class="supersubNumber">7598</span><span class="superscript">+81</span><span class="subscript">-84</span></div>	Stellar Effective Temperature [K]
st_vsin	146.03 km/s
st_vsinerr1	0.48 km/s
st_vsinerr2	-0.48 km/s
st_vsinlim	0
st_vsinstr	146.03±0.48	Stellar Rotational Velocity [km/s]
sy_bmag	10.76 mag
sy_bmagerr1	0.08 mag
sy_bmagerr2	-0.08 mag
sy_bmagstr	10.763±0.082	B (Johnson) Magnitude
sy_dist	470.88 pc
sy_disterr1	6.47 pc
sy_disterr2	-6.30 pc
sy_diststr	<div><span class="supersubNumber">470.878</span><span class="superscript">+6.471</span><span class="subscript">-6.300</span></div>	Distance [pc]
sy_gaiamag	10.54 mag
sy_gaiamagerr1	2.78e-4 mag
sy_gaiamagerr2	-2.78e-4 mag
sy_gaiamagstr	10.541500±0.000278	Gaia Magnitude
sy_gmag	—
sy_gmagerr1	—
sy_gmagerr2	—
sy_gmagstr	—	g (Sloan) Magnitude
sy_hmag	10.12 mag
sy_hmagerr1	0.02 mag
sy_hmagerr2	-0.02 mag
sy_hmagstr	10.121±0.021	H (2MASS) Magnitude
sy_icmag	—
sy_icmagerr1	—
sy_icmagerr2	—
sy_icmagstr	—	I (Cousins) Magnitude
sy_imag	—
sy_imagerr1	—
sy_imagerr2	—
sy_imagstr	—	i (Sloan) Magnitude
sy_jmag	10.15 mag
sy_jmagerr1	0.02 mag
sy_jmagerr2	-0.02 mag
sy_jmagstr	10.149±0.022	J (2MASS) Magnitude
sy_kepmag	—
sy_kepmagerr1	—
sy_kepmagerr2	—
sy_kepmagstr	—	Kepler Magnitude
sy_kmag	10.09 mag
sy_kmagerr1	0.01 mag
sy_kmagerr2	-0.01 mag
sy_kmagstr	10.090±0.014	Ks (2MASS) Magnitude
sy_mnum	0
sy_plx	2.10 mas
sy_plxerr1	0.03 mas
sy_plxerr2	-0.03 mas
sy_plxstr	2.095300±0.028577	Parallax [mas]
sy_pm	2.24 mas/yr
sy_pmdec	-0.11 mas/yr
sy_pmdecerr1	0.05 mas/yr
sy_pmdecerr2	-0.05 mas/yr
sy_pmdecstr	-0.1125450±0.0473294	Proper Motion (Dec) [mas/yr]
sy_pmerr1	0.04 mas/yr
sy_pmerr2	-0.04 mas/yr
sy_pmra	2.24 mas/yr
sy_pmraerr1	0.04 mas/yr
sy_pmraerr2	-0.04 mas/yr
sy_pmrastr	2.2392000±0.0425471	Proper Motion (RA) [mas/yr]
sy_pmstr	2.2420265±0.0425598	Total Proper Motion [mas/yr]
sy_pnum	1
sy_refname	<a refstr=STASSUN_ET_AL__2019 href=https://ui.adsabs.harvard.edu/abs/2019AJ....158..138S/abstract target=ref>TICv8</a>	System Parameter Reference
sy_rmag	—
sy_rmagerr1	—
sy_rmagerr2	—
sy_rmagstr	—	r (Sloan) Magnitude
sy_snum	1
sy_tmag	10.42 mag
sy_tmagerr1	6.10e-3 mag
sy_tmagerr2	-6.10e-3 mag
sy_tmagstr	10.4219±0.0061	TESS Magnitude
sy_umag	—
sy_umagerr1	—
sy_umagerr2	—
sy_umagstr	—	u (Sloan) Magnitude
sy_vmag	10.48 mag
sy_vmagerr1	6.00e-3 mag
sy_vmagerr2	-6.00e-3 mag
sy_vmagstr	10.484±0.006	V (Johnson) Magnitude
sy_w1mag	10.06 mag
sy_w1magerr1	0.02 mag
sy_w1magerr2	-0.02 mag
sy_w1magstr	10.064±0.022	W1 (WISE) Magnitude
sy_w2mag	10.11 mag
sy_w2magerr1	0.02 mag
sy_w2magerr2	-0.02 mag
sy_w2magstr	10.106±0.021	W2 (WISE) Magnitude
sy_w3mag	10.25 mag
sy_w3magerr1	0.07 mag
sy_w3magerr2	-0.07 mag
sy_w3magstr	10.252±0.069	W3 (WISE) Magnitude
sy_w4mag	9.16 mag
sy_w4magerr1	—
sy_w4magerr2	—
sy_w4magstr	9.158	W4 (WISE) Magnitude
sy_zmag	—
sy_zmagerr1	—
sy_zmagerr2	—
sy_zmagstr	—	z (Sloan) Magnitude
tic_id	TIC 203189770	TIC ID
tran_flag	1
ttv_flag	0
x	0.48
y	-0.69
z	0.54

Record 4

Transit • 2018 • KELT-North

🪐

▶All Properties

Property	Value	Description
ast_flag	0
cb_flag	0
dec	32.58 deg
decstr	+32d34m51.76s	Dec [sexagesimal]
default_flag	0
disc_facility	KELT-North	Discovery Facility
disc_instrument	Apogee 4K CCD Sensor	Discovery Instrument
disc_locale	Ground	Discovery Locale
disc_pubdate	2018-02	Discovery Publication Date
disc_refname	<a refstr=JOHNSON_ET_AL__2018 href=https://ui.adsabs.harvard.edu/abs/2018AJ....155..100J/abstract target=ref>Johnson et al. 2018</a>	Discovery Reference
disc_telescope	Mamiya 645 80mm f/1.9	Discovery Telescope
disc_year	2018
discoverymethod	Transit	Discovery Method
dkin_flag	0
elat	50.29 deg
elon	318.82 deg
etv_flag	0
gaia_dr2_id	Gaia DR2 2054523105274216704	Gaia DR2 ID
gaia_dr3_id	Gaia DR3 2054523105274216704	Gaia DR3 ID
glat	-1.99 deg
glon	71.48 deg
hd_name	HD 332124	HD ID
hip_name	—	HIP ID
hostname	KELT-21	Host Name
htm20	-1070449284
ima_flag	0
micro_flag	0
obm_flag	0
pl_bmasse	—
pl_bmasseerr1	—
pl_bmasseerr2	—
pl_bmasselim	—
pl_bmassestr	—	Planet Mass or Mass*sin(i) [Earth Mass]
pl_bmassj	—
pl_bmassjerr1	—
pl_bmassjerr2	—
pl_bmassjlim	—
pl_bmassjstr	—	Planet Mass or Mass*sin(i) [Jupiter Mass]
pl_bmassprov	—	Planet Mass or Mass*sin(i) Provenance
pl_cmasse	—
pl_cmasseerr1	—
pl_cmasseerr2	—
pl_cmasselim	—
pl_cmassestr	—	Planet Mass*sin(i)/sin(i) [Earth Mass]
pl_cmassj	—
pl_cmassjerr1	—
pl_cmassjerr2	—
pl_cmassjlim	—
pl_cmassjstr	—	Planet Mass*sin(i)/sin(i) [Jupiter Mass]
pl_controv_flag	0
pl_dens	—
pl_denserr1	—
pl_denserr2	—
pl_denslim	—
pl_densstr	—	Planet Density [g/cm**3]
pl_eqt	2344 K
pl_eqterr1	—
pl_eqterr2	—
pl_eqtlim	0
pl_eqtstr	2344	Equilibrium Temperature [K]
pl_imppar	—
pl_impparerr1	—
pl_impparerr2	—
pl_impparlim	—
pl_impparstr	—	Impact Parameter
pl_insol	5011.92 Searth
pl_insolerr1	—
pl_insolerr2	—
pl_insollim	0
pl_insolstr	5011.92	Insolation Flux [Earth Flux]
pl_letter	b	Planet Letter
pl_masse	—
pl_masseerr1	—
pl_masseerr2	—
pl_masselim	—
pl_massestr	—	Planet Mass [Earth Mass]
pl_massj	—
pl_massjerr1	—
pl_massjerr2	—
pl_massjlim	—
pl_massjstr	—	Planet Mass [Jupiter Mass]
pl_msinie	—
pl_msinieerr1	—
pl_msinieerr2	—
pl_msinielim	—
pl_msiniestr	—	Planet Mass*sin(i) [Earth Mass]
pl_msinij	—
pl_msinijerr1	—
pl_msinijerr2	—
pl_msinijlim	—
pl_msinijstr	—	Planet Mass*sin(i) [Jupiter Mass]
pl_name	KELT-21 b	Planet Name
pl_ndispec	0
pl_nespec	0
pl_nnotes	1
pl_ntranspec	0
pl_occdep	—
pl_occdeperr1	—
pl_occdeperr2	—
pl_occdeplim	—
pl_occdepstr	—	Occultation Depth [%]
pl_orbeccen	—
pl_orbeccenerr1	—
pl_orbeccenerr2	—
pl_orbeccenlim	—
pl_orbeccenstr	—	Eccentricity
pl_orbincl	—
pl_orbinclerr1	—
pl_orbinclerr2	—
pl_orbincllim	—
pl_orbinclstr	—	Inclination [deg]
pl_orblper	—
pl_orblpererr1	—
pl_orblpererr2	—
pl_orblperlim	—
pl_orblperstr	—	Argument of Periastron [deg]
pl_orbper	3.61 day
pl_orbpererr1	2.40e-6 day
pl_orbpererr2	-2.40e-6 day
pl_orbperlim	0
pl_orbperstr	3.6127710±0.0000024	Orbital Period [day]
pl_orbsmax	—
pl_orbsmaxerr1	—
pl_orbsmaxerr2	—
pl_orbsmaxlim	—
pl_orbsmaxstr	—	Orbit Semi-Major Axis [au]
pl_orbtper	—
pl_orbtpererr1	—
pl_orbtpererr2	—
pl_orbtperlim	—
pl_orbtperstr	—	Epoch of Periastron [day]
pl_projobliq	—
pl_projobliqerr1	—
pl_projobliqerr2	—
pl_projobliqlim	—
pl_projobliqstr	—	Projected Obliquity [deg]
pl_pubdate	2017-07	Planetary Parameter Reference Publication Date
pl_rade	19.37 Rearth
pl_radeerr1	0.69 Rearth
pl_radeerr2	-0.69 Rearth
pl_radelim	0
pl_radestr	19.366200±0.686027	Planet Radius [Earth Radius]
pl_radj	1.73 Rjupiter
pl_radjerr1	0.06 Rjupiter
pl_radjerr2	-0.06 Rjupiter
pl_radjlim	0
pl_radjstr	1.7277396±0.0612033	Planet Radius [Jupiter Radius]
pl_ratdor	—
pl_ratdorerr1	—
pl_ratdorerr2	—
pl_ratdorlim	—
pl_ratdorstr	—	Ratio of Semi-Major Axis to Stellar Radius
pl_ratror	—
pl_ratrorerr1	—
pl_ratrorerr2	—
pl_ratrorlim	—
pl_ratrorstr	—	Ratio of Planet to Stellar Radius
pl_refname	<a refstr=EXOFOP href=https://exofop.ipac.caltech.edu/tess/view_toi.php target=ref>ExoFOP</a>	Planetary Parameter Reference
pl_rvamp	—
pl_rvamperr1	—
pl_rvamperr2	—
pl_rvamplim	—
pl_rvampstr	—	Radial Velocity Amplitude [m/s]
pl_trandep	1.18 %
pl_trandeperr1	0.02 %
pl_trandeperr2	-0.02 %
pl_trandeplim	0
pl_trandepstr	1.1794000±0.0234836	Transit Depth [%]
pl_trandur	4.14 hour
pl_trandurerr1	0.35 hour
pl_trandurerr2	-0.35 hour
pl_trandurlim	0
pl_trandurstr	4.142±0.349	Transit Duration [hour]
pl_tranmid	2.46e6 day
pl_tranmiderr1	2.98e-4 day
pl_tranmiderr2	-2.98e-4 day
pl_tranmidlim	0
pl_tranmidstr	2460551.040398±0.000298	Time of Conjunction (Transit Midpoint) [day]
pl_trueobliq	—
pl_trueobliqerr1	—
pl_trueobliqerr2	—
pl_trueobliqlim	—
pl_trueobliqstr	—	True Obliquity [deg]
pl_tsystemref	BJD	Time Reference Frame and Standard
ptv_flag	0
pul_flag	0
ra	304.80 deg
rastr	20h19m12.01s	RA [sexagesimal]
releasedate	2024-11-20	Release Date
rowupdate	2024-11-20	Date of Last Update
rv_flag	0
soltype	TESS Project Candidate	Solution Type
st_age	—
st_ageerr1	—
st_ageerr2	—
st_agelim	—
st_agestr	—	Stellar Age [Gyr]
st_dens	—
st_denserr1	—
st_denserr2	—
st_denslim	—
st_densstr	—	Stellar Density [g/cm**3]
st_logg	4.28 log(cm/s**2)
st_loggerr1	0.08 log(cm/s**2)
st_loggerr2	-0.08 log(cm/s**2)
st_logglim	0
st_loggstr	4.28±0.08	Stellar Surface Gravity [log(cm/s**2)]
st_lum	—
st_lumerr1	—
st_lumerr2	—
st_lumlim	—
st_lumstr	—	Stellar Luminosity [log(Solar)]
st_mass	—
st_masserr1	—
st_masserr2	—
st_masslim	—
st_massstr	—	Stellar Mass [Solar mass]
st_met	—
st_meterr1	—
st_meterr2	—
st_metlim	—
st_metratio	—	Stellar Metallicity Ratio
st_metstr	—	Stellar Metallicity [dex]
st_nphot	0
st_nrvc	0
st_nspec	0
st_rad	1.71 Rsun
st_raderr1	0.06 Rsun
st_raderr2	-0.06 Rsun
st_radlim	0
st_radstr	1.71±0.06	Stellar Radius [Solar Radius]
st_radv	—
st_radverr1	—
st_radverr2	—
st_radvlim	—
st_radvstr	—	Systemic Radial Velocity [km/s]
st_refname	<a refstr=EXOFOP href=https://exofop.ipac.caltech.edu/tess/view_toi.php target=ref>ExoFOP</a>	Stellar Parameter Reference
st_rotp	—
st_rotperr1	—
st_rotperr2	—
st_rotplim	—
st_rotpstr	—	Stellar Rotational Period [day]
st_spectype	—	Spectral Type
st_teff	8324 K
st_tefferr1	258.90 K
st_tefferr2	-258.90 K
st_tefflim	0
st_teffstr	8324.0±258.9	Stellar Effective Temperature [K]
st_vsin	—
st_vsinerr1	—
st_vsinerr2	—
st_vsinlim	—
st_vsinstr	—	Stellar Rotational Velocity [km/s]
sy_bmag	10.76 mag
sy_bmagerr1	0.08 mag
sy_bmagerr2	-0.08 mag
sy_bmagstr	10.763±0.082	B (Johnson) Magnitude
sy_dist	470.88 pc
sy_disterr1	6.47 pc
sy_disterr2	-6.30 pc
sy_diststr	<div><span class="supersubNumber">470.878</span><span class="superscript">+6.471</span><span class="subscript">-6.300</span></div>	Distance [pc]
sy_gaiamag	10.54 mag
sy_gaiamagerr1	2.78e-4 mag
sy_gaiamagerr2	-2.78e-4 mag
sy_gaiamagstr	10.541500±0.000278	Gaia Magnitude
sy_gmag	—
sy_gmagerr1	—
sy_gmagerr2	—
sy_gmagstr	—	g (Sloan) Magnitude
sy_hmag	10.12 mag
sy_hmagerr1	0.02 mag
sy_hmagerr2	-0.02 mag
sy_hmagstr	10.121±0.021	H (2MASS) Magnitude
sy_icmag	—
sy_icmagerr1	—
sy_icmagerr2	—
sy_icmagstr	—	I (Cousins) Magnitude
sy_imag	—
sy_imagerr1	—
sy_imagerr2	—
sy_imagstr	—	i (Sloan) Magnitude
sy_jmag	10.15 mag
sy_jmagerr1	0.02 mag
sy_jmagerr2	-0.02 mag
sy_jmagstr	10.149±0.022	J (2MASS) Magnitude
sy_kepmag	—
sy_kepmagerr1	—
sy_kepmagerr2	—
sy_kepmagstr	—	Kepler Magnitude
sy_kmag	10.09 mag
sy_kmagerr1	0.01 mag
sy_kmagerr2	-0.01 mag
sy_kmagstr	10.090±0.014	Ks (2MASS) Magnitude
sy_mnum	0
sy_plx	2.10 mas
sy_plxerr1	0.03 mas
sy_plxerr2	-0.03 mas
sy_plxstr	2.095300±0.028577	Parallax [mas]
sy_pm	2.24 mas/yr
sy_pmdec	-0.11 mas/yr
sy_pmdecerr1	0.05 mas/yr
sy_pmdecerr2	-0.05 mas/yr
sy_pmdecstr	-0.1125450±0.0473294	Proper Motion (Dec) [mas/yr]
sy_pmerr1	0.04 mas/yr
sy_pmerr2	-0.04 mas/yr
sy_pmra	2.24 mas/yr
sy_pmraerr1	0.04 mas/yr
sy_pmraerr2	-0.04 mas/yr
sy_pmrastr	2.2392000±0.0425471	Proper Motion (RA) [mas/yr]
sy_pmstr	2.2420265±0.0425598	Total Proper Motion [mas/yr]
sy_pnum	1
sy_refname	<a refstr=STASSUN_ET_AL__2019 href=https://ui.adsabs.harvard.edu/abs/2019AJ....158..138S/abstract target=ref>TICv8</a>	System Parameter Reference
sy_rmag	—
sy_rmagerr1	—
sy_rmagerr2	—
sy_rmagstr	—	r (Sloan) Magnitude
sy_snum	1
sy_tmag	10.42 mag
sy_tmagerr1	6.10e-3 mag
sy_tmagerr2	-6.10e-3 mag
sy_tmagstr	10.4219±0.0061	TESS Magnitude
sy_umag	—
sy_umagerr1	—
sy_umagerr2	—
sy_umagstr	—	u (Sloan) Magnitude
sy_vmag	10.48 mag
sy_vmagerr1	6.00e-3 mag
sy_vmagerr2	-6.00e-3 mag
sy_vmagstr	10.484±0.006	V (Johnson) Magnitude
sy_w1mag	10.06 mag
sy_w1magerr1	0.02 mag
sy_w1magerr2	-0.02 mag
sy_w1magstr	10.064±0.022	W1 (WISE) Magnitude
sy_w2mag	10.11 mag
sy_w2magerr1	0.02 mag
sy_w2magerr2	-0.02 mag
sy_w2magstr	10.106±0.021	W2 (WISE) Magnitude
sy_w3mag	10.25 mag
sy_w3magerr1	0.07 mag
sy_w3magerr2	-0.07 mag
sy_w3magstr	10.252±0.069	W3 (WISE) Magnitude
sy_w4mag	9.16 mag
sy_w4magerr1	—
sy_w4magerr2	—
sy_w4magstr	9.158	W4 (WISE) Magnitude
sy_zmag	—
sy_zmagerr1	—
sy_zmagerr2	—
sy_zmagstr	—	z (Sloan) Magnitude
tic_id	TIC 203189770	TIC ID
tran_flag	1
ttv_flag	0
x	0.48
y	-0.69
z	0.54