TEPCat: LHS 1140c


 

This page summarises the information held within TEPCat for the transiting planetary system LHS 1140c. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper arXiv:1808.00485  
Date of discovery paper 2018 / 8 / 2 y / m / d
Right ascension 00 44 59.31 h m s
Declination −15 16 16.7 d m s
V-band apparent magnitude 14.15 mag
K-band apparent magnitude 8.82 mag
Transit duration 0.04583
( 1.0999 )
day
hour
Transit depth 0.25 %
Time of mid-transit   2458389.29382 ± 0.00082     HJD or BJD
Orbital period 3.777929 ± 0.00030 days
Reference for orbital ephemeris   arXiv:2010.06928  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 3216 ± 39 K
Stellar metal abundance ([Fe/H] or [M/H])   −0.24 ± 0.10 dex
Stellar mass 0.191 +0.012 −0.011   Msun
Stellar radius 0.2134 +0.0036 −0.0034 Rsun
Stellar logarithmic surface gravity c.g.s.
Stellar mean density ρsun
g cm-3
Orbital eccentricity 0.0 +0.252 −0.0  
Orbital semimajor axis   0.02734 ± 0.00054  AU
Planetary mass 0.0055 ± 0.0005
( 1.75 ± 0.16 )
Mjup
Mearth
Planetary radius 0.1043 +0.0033 −0.0034
( 1.169 +0.037 −0.038 )
Rjup
Rearth
Planetary surface gravity 12.6 +1.4 −1.3
3.10 +0.05 −0.05
m/s2
log(cgs)
Planetary mean density 4.58 +0.61 −0.56
( 6.08 +0.81 −0.74 )
ρjup
g cm-3
Planetary equilibrium temperature 709 ± 8 K
Reference of detailed study arXiv:2010.06928  

 

LHS 1140c does not have an entry in the catalogue of orbital obliquity measurements.

 

LHS 1140c has not been analysed as part of the Homogeneous Studies of Transiting Extrasolar Planets project.

 


Page generated on 2021/12/02           John Southworth   (Keele University, UK)