🪐

NGTS-17 b

Exoplanet Records

📊Key Properties

Host Star

NGTS-17

Discovery

Transit

Year

2021

Period

3.24 day

Radius

13.90 Rearth

Mass

242.82 Mearth

Eq. Temp

1457 K

🧾Records(1 rows)

Record 1

Transit • 2021 • Next-Generation Transit Survey (NGTS)

🪐

▶All Properties

Property	Value	Description
ast_flag	0
cb_flag	0
dec	-34.23 deg
decstr	-34d13m34.37s	Dec [sexagesimal]
default_flag	1
disc_facility	Next-Generation Transit Survey (NGTS)	Discovery Facility
disc_instrument	NGTS CCD array	Discovery Instrument
disc_locale	Ground	Discovery Locale
disc_pubdate	2021-03	Discovery Publication Date
disc_refname	<a refstr=TILBROOK_ET_AL__2021 href=https://ui.adsabs.harvard.edu/abs/2021MNRAS.tmp..893T/abstract target=ref>Tilbrook et al. 2021</a>	Discovery Reference
disc_telescope	20 cm NGTS telescope	Discovery Telescope
disc_year	2021
discoverymethod	Transit	Discovery Method
dkin_flag	0
elat	-56.14 deg
elon	64.13 deg
etv_flag	0
gaia_dr2_id	Gaia DR2 4873225513593736960	Gaia DR2 ID
gaia_dr3_id	Gaia DR3 4873225513593736960	Gaia DR3 ID
glat	-38.60 deg
glon	236.49 deg
hd_name	—	HD ID
hip_name	—	HIP ID
hostname	NGTS-17	Host Name
htm20	1002215164
ima_flag	0
micro_flag	0
obm_flag	0
pl_bmasse	242.82 Mearth
pl_bmasseerr1	61.98 Mearth
pl_bmasseerr2	-52.12 Mearth
pl_bmasselim	0
pl_bmassestr	<div><span class="supersubNumber">243</span><span class="superscript">+62</span><span class="subscript">-52</span></div>	Planet Mass or Mass*sin(i) [Earth Mass]
pl_bmassj	0.76 Mjupiter
pl_bmassjerr1	0.20 Mjupiter
pl_bmassjerr2	-0.16 Mjupiter
pl_bmassjlim	0
pl_bmassjstr	<div><span class="supersubNumber">0.764</span><span class="superscript">+0.195</span><span class="subscript">-0.164</span></div>	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	0.50 g/cm**3
pl_denserr1	0.27 g/cm**3
pl_denserr2	-0.17 g/cm**3
pl_denslim	0
pl_densstr	<div><span class="supersubNumber">0.50</span><span class="superscript">+0.27</span><span class="subscript">-0.17</span></div>	Planet Density [g/cm**3]
pl_eqt	1457 K
pl_eqterr1	50 K
pl_eqterr2	-50 K
pl_eqtlim	0
pl_eqtstr	1457±50	Equilibrium Temperature [K]
pl_imppar	0.69
pl_impparerr1	0.04
pl_impparerr2	-0.06
pl_impparlim	0
pl_impparstr	<div><span class="supersubNumber">0.688</span><span class="superscript">+0.043</span><span class="subscript">-0.056</span></div>	Impact Parameter
pl_insol	1160 Searth
pl_insolerr1	250 Searth
pl_insolerr2	-250 Searth
pl_insollim	0
pl_insolstr	1160±250	Insolation Flux [Earth Flux]
pl_letter	b	Planet Letter
pl_masse	242.82 Mearth
pl_masseerr1	61.98 Mearth
pl_masseerr2	-52.12 Mearth
pl_masselim	0
pl_massestr	<div><span class="supersubNumber">243</span><span class="superscript">+62</span><span class="subscript">-52</span></div>	Planet Mass [Earth Mass]
pl_massj	0.76 Mjupiter
pl_massjerr1	0.20 Mjupiter
pl_massjerr2	-0.16 Mjupiter
pl_massjlim	0
pl_massjstr	<div><span class="supersubNumber">0.764</span><span class="superscript">+0.195</span><span class="subscript">-0.164</span></div>	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	NGTS-17 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	—
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	3.24 day
pl_orbpererr1	1.00e-5 day
pl_orbpererr2	-1.00e-5 day
pl_orbperlim	0
pl_orbperstr	<div><span class="supersubNumber">3.24253</span><span class="superscript">+0.00001</span><span class="subscript">-0.00001</span></div>	Orbital Period [day]
pl_orbsmax	0.04 au
pl_orbsmaxerr1	4.30e-3 au
pl_orbsmaxerr2	-4.30e-3 au
pl_orbsmaxlim	0
pl_orbsmaxstr	0.0391±0.0043	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	2021-03	Planetary Parameter Reference Publication Date
pl_rade	13.90 Rearth
pl_radeerr1	1.23 Rearth
pl_radeerr2	-1.23 Rearth
pl_radelim	0
pl_radestr	13.9±1.2	Planet Radius [Earth Radius]
pl_radj	1.24 Rjupiter
pl_radjerr1	0.11 Rjupiter
pl_radjerr2	-0.11 Rjupiter
pl_radjlim	0
pl_radjstr	1.24±0.11	Planet Radius [Jupiter Radius]
pl_ratdor	6.28
pl_ratdorerr1	0.40
pl_ratdorerr2	-0.40
pl_ratdorlim	0
pl_ratdorstr	<div><span class="supersubNumber">6.28</span><span class="superscript">+0.40</span><span class="subscript">-0.40</span></div>	Ratio of Semi-Major Axis to Stellar Radius
pl_ratror	0.10
pl_ratrorerr1	1.00e-3
pl_ratrorerr2	-1.00e-3
pl_ratrorlim	0
pl_ratrorstr	0.095±0.001	Ratio of Planet to Stellar Radius
pl_refname	<a refstr=TILBROOK_ET_AL__2021 href=https://ui.adsabs.harvard.edu/abs/2021MNRAS.tmp..893T/abstract target=ref>Tilbrook et al. 2021</a>	Planetary Parameter Reference
pl_rvamp	93 m/s
pl_rvamperr1	20 m/s
pl_rvamperr2	-17 m/s
pl_rvamplim	0
pl_rvampstr	<div><span class="supersubNumber">93.0</span><span class="superscript">+20.0</span><span class="subscript">-17.0</span></div>	Radial Velocity Amplitude [m/s]
pl_trandep	—
pl_trandeperr1	—
pl_trandeperr2	—
pl_trandeplim	—
pl_trandepstr	—	Transit Depth [%]
pl_trandur	3.39 hour
pl_trandurerr1	0.08 hour
pl_trandurerr2	-0.07 hour
pl_trandurlim	0
pl_trandurstr	<div><span class="supersubNumber">3.391</span><span class="superscript">+0.076</span><span class="subscript">-0.073</span></div>	Transit Duration [hour]
pl_tranmid	2.46e6 day
pl_tranmiderr1	9.00e-4 day
pl_tranmiderr2	-9.00e-4 day
pl_tranmidlim	0
pl_tranmidstr	2458442.5219±0.0009	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	72.90 deg
rastr	04h51m36.14s	RA [sexagesimal]
releasedate	2021-04-23	Release Date
rowupdate	2021-04-23	Date of Last Update
rv_flag	1
soltype	Published Confirmed	Solution Type
st_age	9.22 Gyr
st_ageerr1	1.41 Gyr
st_ageerr2	-1.40 Gyr
st_agelim	0
st_agestr	<div><span class="supersubNumber">9.220</span><span class="superscript">+1.410</span><span class="subscript">-1.400</span></div>	Stellar Age [Gyr]
st_dens	—
st_denserr1	—
st_denserr2	—
st_denslim	—
st_densstr	—	Stellar Density [g/cm**3]
st_logg	4 log(cm/s**2)
st_loggerr1	0.12 log(cm/s**2)
st_loggerr2	-0.12 log(cm/s**2)
st_logglim	0
st_loggstr	4.00±0.12	Stellar Surface Gravity [log(cm/s**2)]
st_lum	—
st_lumerr1	—
st_lumerr2	—
st_lumlim	—
st_lumstr	—	Stellar Luminosity [log(Solar)]
st_mass	1.02 Msun
st_masserr1	0.03 Msun
st_masserr2	-0.03 Msun
st_masslim	0
st_massstr	<div><span class="supersubNumber">1.025</span><span class="superscript">+0.034</span><span class="subscript">-0.033</span></div>	Stellar Mass [Solar mass]
st_met	0.15 dex
st_meterr1	0.10 dex
st_meterr2	-0.10 dex
st_metlim	0
st_metratio	[Fe/H]	Stellar Metallicity Ratio
st_metstr	0.15±0.10	Stellar Metallicity [dex]
st_nphot	0
st_nrvc	0
st_nspec	0
st_rad	1.34 Rsun
st_raderr1	0.12 Rsun
st_raderr2	-0.12 Rsun
st_radlim	0
st_radstr	1.337±0.125	Stellar Radius [Solar Radius]
st_radv	34.81 km/s
st_radverr1	0.07 km/s
st_radverr2	-0.07 km/s
st_radvlim	0
st_radvstr	34.81±0.07	Systemic Radial Velocity [km/s]
st_refname	<a refstr=TILBROOK_ET_AL__2021 href=https://ui.adsabs.harvard.edu/abs/2021MNRAS.tmp..893T/abstract target=ref>Tilbrook et al. 2021</a>	Stellar Parameter Reference
st_rotp	—
st_rotperr1	—
st_rotperr2	—
st_rotplim	—
st_rotpstr	—	Stellar Rotational Period [day]
st_spectype	G4 V	Spectral Type
st_teff	5650 K
st_tefferr1	100 K
st_tefferr2	-100 K
st_tefflim	0
st_teffstr	5650±100	Stellar Effective Temperature [K]
st_vsin	4.10 km/s
st_vsinerr1	1 km/s
st_vsinerr2	-1 km/s
st_vsinlim	0
st_vsinstr	<div><span class="supersubNumber">4.1</span><span class="superscript">+1.0</span><span class="subscript">-1.0</span></div>	Stellar Rotational Velocity [km/s]
sy_bmag	15.04 mag
sy_bmagerr1	0.03 mag
sy_bmagerr2	-0.03 mag
sy_bmagstr	15.043±0.033	B (Johnson) Magnitude
sy_dist	1040.28 pc
sy_disterr1	22.05 pc
sy_disterr2	-21.16 pc
sy_diststr	<div><span class="supersubNumber">1040.28</span><span class="superscript">+22.05</span><span class="subscript">-21.16</span></div>	Distance [pc]
sy_gaiamag	14.21 mag
sy_gaiamagerr1	3.69e-4 mag
sy_gaiamagerr2	-3.69e-4 mag
sy_gaiamagstr	14.213600±0.000369	Gaia Magnitude
sy_gmag	—
sy_gmagerr1	—
sy_gmagerr2	—
sy_gmagstr	—	g (Sloan) Magnitude
sy_hmag	12.87 mag
sy_hmagerr1	0.03 mag
sy_hmagerr2	-0.03 mag
sy_hmagstr	12.867±0.027	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	13.11 mag
sy_jmagerr1	0.03 mag
sy_jmagerr2	-0.03 mag
sy_jmagstr	13.114±0.026	J (2MASS) Magnitude
sy_kepmag	—
sy_kepmagerr1	—
sy_kepmagerr2	—
sy_kepmagstr	—	Kepler Magnitude
sy_kmag	12.72 mag
sy_kmagerr1	0.03 mag
sy_kmagerr2	-0.03 mag
sy_kmagstr	12.724±0.029	Ks (2MASS) Magnitude
sy_mnum	0
sy_plx	0.93 mas
sy_plxerr1	0.02 mas
sy_plxerr2	-0.02 mas
sy_plxstr	0.9320590±0.0198214	Parallax [mas]
sy_pm	11.81 mas/yr
sy_pmdec	-11.81 mas/yr
sy_pmdecerr1	0.03 mas/yr
sy_pmdecerr2	-0.03 mas/yr
sy_pmdecstr	-11.8123000±0.0339363	Proper Motion (Dec) [mas/yr]
sy_pmerr1	0.03 mas/yr
sy_pmerr2	-0.03 mas/yr
sy_pmra	-0.19 mas/yr
sy_pmraerr1	0.03 mas/yr
sy_pmraerr2	-0.03 mas/yr
sy_pmrastr	-0.1899200±0.0312886	Proper Motion (RA) [mas/yr]
sy_pmstr	11.8138267±0.0339356	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	13.77 mag
sy_tmagerr1	6.00e-3 mag
sy_tmagerr2	-6.00e-3 mag
sy_tmagstr	13.7671±0.0060	TESS Magnitude
sy_umag	—
sy_umagerr1	—
sy_umagerr2	—
sy_umagstr	—	u (Sloan) Magnitude
sy_vmag	14.41 mag
sy_vmagerr1	0.13 mag
sy_vmagerr2	-0.13 mag
sy_vmagstr	14.412±0.126	V (Johnson) Magnitude
sy_w1mag	12.76 mag
sy_w1magerr1	0.02 mag
sy_w1magerr2	-0.02 mag
sy_w1magstr	12.755±0.023	W1 (WISE) Magnitude
sy_w2mag	12.77 mag
sy_w2magerr1	0.03 mag
sy_w2magerr2	-0.03 mag
sy_w2magstr	12.769±0.025	W2 (WISE) Magnitude
sy_w3mag	12.45 mag
sy_w3magerr1	0.31 mag
sy_w3magerr2	-0.31 mag
sy_w3magstr	12.452±0.312	W3 (WISE) Magnitude
sy_w4mag	9.36 mag
sy_w4magerr1	—
sy_w4magerr2	—
sy_w4magstr	9.358	W4 (WISE) Magnitude
sy_zmag	—
sy_zmagerr1	—
sy_zmagerr2	—
sy_zmagstr	—	z (Sloan) Magnitude
tic_id	TIC 1309019	TIC ID
tran_flag	1
ttv_flag	0
x	0.24
y	0.79
z	-0.56