🪐

LHS 1903 e

Exoplanet Records

📊Key Properties

Host Star

LHS 1903

Discovery

Transit

Year

2026

Period

29.32 day

Radius

1.73 Rearth

Mass

5.79 Mearth

Eq. Temp

333 K

🧾Records(1 rows)

Record 1

Transit • 2026 • CHaracterising ExOPlanets Satellite (CHEOPS)

🪐

▶All Properties

Property	Value	Description
ast_flag	0
cb_flag	0
dec	48.33 deg
decstr	+48d19m40.56s	Dec [sexagesimal]
default_flag	1
disc_facility	CHaracterising ExOPlanets Satellite (CHEOPS)	Discovery Facility
disc_instrument	Teledyne e2v CCD detector	Discovery Instrument
disc_locale	Space	Discovery Locale
disc_pubdate	2026-02	Discovery Publication Date
disc_refname	<a refstr=WILSON_ET_AL_2026 href=https://ui.adsabs.harvard.edu/abs/2026arXiv260211271W/abstract target=ref>Wilson et al. 2026</a>	Discovery Reference
disc_telescope	0.3 m Ritchey-Chretien Telescope	Discovery Telescope
disc_year	2026
discoverymethod	Transit	Discovery Method
dkin_flag	0
elat	25.70 deg
elon	103.08 deg
etv_flag	0
gaia_dr2_id	Gaia DR2 978086481343568128	Gaia DR2 ID
gaia_dr3_id	Gaia DR3 978086481343568128	Gaia DR3 ID
glat	23.09 deg
glon	168.99 deg
hd_name	—	HD ID
hip_name	HIP 34730	HIP ID
hostname	LHS 1903	Host Name
htm20	-778388913
ima_flag	0
micro_flag	0
obm_flag	0
pl_bmasse	5.79 Mearth
pl_bmasseerr1	1.60 Mearth
pl_bmasseerr2	-1.61 Mearth
pl_bmasselim	0
pl_bmassestr	<div><span class="supersubNumber">5.79</span><span class="superscript">+1.60</span><span class="subscript">-1.61</span></div>	Planet Mass or Mass*sin(i) [Earth Mass]
pl_bmassj	0.02 Mjupiter
pl_bmassjerr1	5.03e-3 Mjupiter
pl_bmassjerr2	-5.07e-3 Mjupiter
pl_bmassjlim	0
pl_bmassjstr	<div><span class="supersubNumber">0.0182</span><span class="superscript">+0.0050</span><span class="subscript">-0.0051</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	6.10 g/cm**3
pl_denserr1	1.83 g/cm**3
pl_denserr2	-1.71 g/cm**3
pl_denslim	0
pl_densstr	<div><span class="supersubNumber">6.10</span><span class="superscript">+1.83</span><span class="subscript">-1.71</span></div>	Planet Density [g/cm**3]
pl_eqt	333 K
pl_eqterr1	9 K
pl_eqterr2	-8 K
pl_eqtlim	0
pl_eqtstr	<div><span class="supersubNumber">333</span><span class="superscript">+9</span><span class="subscript">-8</span></div>	Equilibrium Temperature [K]
pl_imppar	0.12
pl_impparerr1	0.09
pl_impparerr2	-0.08
pl_impparlim	0
pl_impparstr	<div><span class="supersubNumber">0.120</span><span class="superscript">+0.094</span><span class="subscript">-0.079</span></div>	Impact Parameter
pl_insol	2.05 Searth
pl_insolerr1	0.22 Searth
pl_insolerr2	-0.20 Searth
pl_insollim	0
pl_insolstr	<div><span class="supersubNumber">2.05</span><span class="superscript">+0.22</span><span class="subscript">-0.20</span></div>	Insolation Flux [Earth Flux]
pl_letter	e	Planet Letter
pl_masse	5.79 Mearth
pl_masseerr1	1.60 Mearth
pl_masseerr2	-1.61 Mearth
pl_masselim	0
pl_massestr	<div><span class="supersubNumber">5.79</span><span class="superscript">+1.60</span><span class="subscript">-1.61</span></div>	Planet Mass [Earth Mass]
pl_massj	0.02 Mjupiter
pl_massjerr1	5.03e-3 Mjupiter
pl_massjerr2	-5.07e-3 Mjupiter
pl_massjlim	0
pl_massjstr	<div><span class="supersubNumber">0.0182</span><span class="superscript">+0.0050</span><span class="subscript">-0.0051</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	LHS 1903 e	Planet Name
pl_ndispec	0
pl_nespec	0
pl_nnotes	0
pl_ntranspec	0
pl_occdep	—
pl_occdeperr1	—
pl_occdeperr2	—
pl_occdeplim	—
pl_occdepstr	—	Occultation Depth [%]
pl_orbeccen	0.01
pl_orbeccenerr1	0.01
pl_orbeccenerr2	-0.01
pl_orbeccenlim	0
pl_orbeccenstr	<div><span class="supersubNumber">0.014</span><span class="superscript">+0.015</span><span class="subscript">-0.010</span></div>	Eccentricity
pl_orbincl	—
pl_orbinclerr1	—
pl_orbinclerr2	—
pl_orbincllim	—
pl_orbinclstr	—	Inclination [deg]
pl_orblper	263 deg
pl_orblpererr1	63 deg
pl_orblpererr2	-76 deg
pl_orblperlim	0
pl_orblperstr	<div><span class="supersubNumber">263</span><span class="superscript">+63</span><span class="subscript">-76</span></div>	Argument of Periastron [deg]
pl_orbper	29.32 day
pl_orbpererr1	2.80e-4 day
pl_orbpererr2	-2.50e-4 day
pl_orbperlim	0
pl_orbperstr	<div><span class="supersubNumber">29.31773</span><span class="superscript">+0.00028</span><span class="subscript">-0.00025</span></div>	Orbital Period [day]
pl_orbsmax	0.15 au
pl_orbsmaxerr1	3.14e-3 au
pl_orbsmaxerr2	-3.38e-3 au
pl_orbsmaxlim	0
pl_orbsmaxstr	<div><span class="supersubNumber">0.15135</span><span class="superscript">+0.00314</span><span class="subscript">-0.00338</span></div>	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	2026-02	Planetary Parameter Reference Publication Date
pl_rade	1.73 Rearth
pl_radeerr1	0.06 Rearth
pl_radeerr2	-0.06 Rearth
pl_radelim	0
pl_radestr	<div><span class="supersubNumber">1.732</span><span class="superscript">+0.059</span><span class="subscript">-0.058</span></div>	Planet Radius [Earth Radius]
pl_radj	0.15 Rjupiter
pl_radjerr1	5.26e-3 Rjupiter
pl_radjerr2	-5.17e-3 Rjupiter
pl_radjlim	0
pl_radjstr	<div><span class="supersubNumber">0.1545</span><span class="superscript">+0.0053</span><span class="subscript">-0.0052</span></div>	Planet Radius [Jupiter Radius]
pl_ratdor	60.35
pl_ratdorerr1	2
pl_ratdorerr2	-2
pl_ratdorlim	0
pl_ratdorstr	60.35±2.00	Ratio of Semi-Major Axis to Stellar Radius
pl_ratror	0.03
pl_ratrorerr1	6.20e-4
pl_ratrorerr2	-6.20e-4
pl_ratrorlim	0
pl_ratrorstr	0.02947±0.00062	Ratio of Planet to Stellar Radius
pl_refname	<a refstr=WILSON_ET_AL_2026 href=https://ui.adsabs.harvard.edu/abs/2026arXiv260211271W/abstract target=ref>Wilson et al. 2026</a>	Planetary Parameter Reference
pl_rvamp	1.82 m/s
pl_rvamperr1	0.50 m/s
pl_rvamperr2	-0.50 m/s
pl_rvamplim	0
pl_rvampstr	1.82±0.50	Radial Velocity Amplitude [m/s]
pl_trandep	0.09 %
pl_trandeperr1	3.70e-3 %
pl_trandeperr2	-3.60e-3 %
pl_trandeplim	0
pl_trandepstr	<div><span class="supersubNumber">0.0868</span><span class="superscript">+0.0037</span><span class="subscript">-0.0036</span></div>	Transit Depth [%]
pl_trandur	3.78 hour
pl_trandurerr1	0.13 hour
pl_trandurerr2	-0.13 hour
pl_trandurlim	0
pl_trandurstr	<div><span class="supersubNumber">3.780</span><span class="superscript">+0.134</span><span class="subscript">-0.133</span></div>	Transit Duration [hour]
pl_tranmid	2.46e6 day
pl_tranmiderr1	7.10e-3 day
pl_tranmiderr2	-8.30e-3 day
pl_tranmidlim	0
pl_tranmidstr	<div><span class="supersubNumber">2458868.8152</span><span class="superscript">+0.0071</span><span class="subscript">-0.0083</span></div>	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	107.87 deg
rastr	07h11m27.80s	RA [sexagesimal]
releasedate	2026-02-26	Release Date
rowupdate	2026-02-26	Date of Last Update
rv_flag	1
soltype	Published Confirmed	Solution Type
st_age	7.08 Gyr
st_ageerr1	2.87 Gyr
st_ageerr2	-1.98 Gyr
st_agelim	0
st_agestr	<div><span class="supersubNumber">7.08</span><span class="superscript">+2.87</span><span class="subscript">-1.98</span></div>	Stellar Age [Gyr]
st_dens	5.34 g/cm**3
st_denserr1	0.24 g/cm**3
st_denserr2	-0.20 g/cm**3
st_denslim	0
st_densstr	<div><span class="supersubNumber">5.34</span><span class="superscript">+0.24</span><span class="subscript">-0.20</span></div>	Stellar Density [g/cm**3]
st_logg	4.75 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	4.75±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	0.54 Msun
st_masserr1	0.04 Msun
st_masserr2	-0.03 Msun
st_masslim	0
st_massstr	<div><span class="supersubNumber">0.538</span><span class="superscript">+0.039</span><span class="subscript">-0.030</span></div>	Stellar Mass [Solar mass]
st_met	-0.11 dex
st_meterr1	0.09 dex
st_meterr2	-0.09 dex
st_metlim	0
st_metratio	[Fe/H]	Stellar Metallicity Ratio
st_metstr	-0.11±0.09	Stellar Metallicity [dex]
st_nphot	0
st_nrvc	0
st_nspec	0
st_rad	0.54 Rsun
st_raderr1	0.01 Rsun
st_raderr2	-0.01 Rsun
st_radlim	0
st_radstr	0.539±0.014	Stellar Radius [Solar Radius]
st_radv	—
st_radverr1	—
st_radverr2	—
st_radvlim	—
st_radvstr	—	Systemic Radial Velocity [km/s]
st_refname	<a refstr=WILSON_ET_AL_2026 href=https://ui.adsabs.harvard.edu/abs/2026arXiv260211271W/abstract target=ref>Wilson et al. 2026</a>	Stellar Parameter Reference
st_rotp	40.80 day
st_rotperr1	—
st_rotperr2	—
st_rotplim	0
st_rotpstr	40.8	Stellar Rotational Period [day]
st_spectype	M	Spectral Type
st_teff	3664 K
st_tefferr1	70 K
st_tefferr2	-70 K
st_tefflim	0
st_teffstr	3664±70	Stellar Effective Temperature [K]
st_vsin	—
st_vsinerr1	—
st_vsinerr2	—
st_vsinlim	—
st_vsinstr	—	Stellar Rotational Velocity [km/s]
sy_bmag	13.65 mag
sy_bmagerr1	0.06 mag
sy_bmagerr2	-0.06 mag
sy_bmagstr	13.652±0.056	B (Johnson) Magnitude
sy_dist	35.69 pc
sy_disterr1	0.08 pc
sy_disterr2	-0.08 pc
sy_diststr	35.6917±0.0833	Distance [pc]
sy_gaiamag	11.39 mag
sy_gaiamagerr1	1.37e-3 mag
sy_gaiamagerr2	-1.37e-3 mag
sy_gaiamagstr	11.394400±0.001371	Gaia Magnitude
sy_gmag	—
sy_gmagerr1	—
sy_gmagerr2	—
sy_gmagstr	—	g (Sloan) Magnitude
sy_hmag	8.42 mag
sy_hmagerr1	0.02 mag
sy_hmagerr2	-0.02 mag
sy_hmagstr	8.418±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	9.06 mag
sy_jmagerr1	0.03 mag
sy_jmagerr2	-0.03 mag
sy_jmagstr	9.061±0.027	J (2MASS) Magnitude
sy_kepmag	—
sy_kepmagerr1	—
sy_kepmagerr2	—
sy_kepmagstr	—	Kepler Magnitude
sy_kmag	8.21 mag
sy_kmagerr1	0.02 mag
sy_kmagerr2	-0.02 mag
sy_kmagstr	8.212±0.021	Ks (2MASS) Magnitude
sy_mnum	0
sy_plx	27.99 mas
sy_plxerr1	0.06 mas
sy_plxerr2	-0.06 mas
sy_plxstr	27.9890000±0.0649198	Parallax [mas]
sy_pm	578.09 mas/yr
sy_pmdec	-570.55 mas/yr
sy_pmdecerr1	0.08 mas/yr
sy_pmdecerr2	-0.08 mas/yr
sy_pmdecstr	-570.5520000±0.0817557	Proper Motion (Dec) [mas/yr]
sy_pmerr1	0.08 mas/yr
sy_pmerr2	-0.08 mas/yr
sy_pmra	-93.08 mas/yr
sy_pmraerr1	0.09 mas/yr
sy_pmraerr2	-0.09 mas/yr
sy_pmrastr	-93.0762000±0.0909378	Proper Motion (RA) [mas/yr]
sy_pmstr	578.0940786±0.0820067	Total Proper Motion [mas/yr]
sy_pnum	4
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	10.36 mag
sy_tmagerr1	7.41e-3 mag
sy_tmagerr2	-7.41e-3 mag
sy_tmagstr	10.3595000±0.0074136	TESS Magnitude
sy_umag	—
sy_umagerr1	—
sy_umagerr2	—
sy_umagstr	—	u (Sloan) Magnitude
sy_vmag	12.23 mag
sy_vmagerr1	0.04 mag
sy_vmagerr2	-0.04 mag
sy_vmagstr	12.230±0.035	V (Johnson) Magnitude
sy_w1mag	—
sy_w1magerr1	—
sy_w1magerr2	—
sy_w1magstr	—	W1 (WISE) Magnitude
sy_w2mag	—
sy_w2magerr1	—
sy_w2magerr2	—
sy_w2magstr	—	W2 (WISE) Magnitude
sy_w3mag	—
sy_w3magerr1	—
sy_w3magerr2	—
sy_w3magstr	—	W3 (WISE) Magnitude
sy_w4mag	—
sy_w4magerr1	—
sy_w4magerr2	—
sy_w4magstr	—	W4 (WISE) Magnitude
sy_zmag	—
sy_zmagerr1	—
sy_zmagerr2	—
sy_zmagstr	—	z (Sloan) Magnitude
tic_id	TIC 318022259	TIC ID
tran_flag	1
ttv_flag	0
x	-0.20
y	0.63
z	0.75