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 2019AJ....157...32M  
Date of discovery paper 2018 / 8 / 2 y / m / d
Data/telescope used for discovery MEarth  
Right ascension 00 44 59.31 h m s
Declination −15 16 16.7 d m s
Right ascension (decimal) 11.24712 degrees
Declination (decimal) -15.27131 degrees
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   2458389.2939 ± 0.0002     HJD or BJD
Orbital period 3.777940 ± 0.000002 days
Reference for orbital ephemeris   arXiv:2310.15490  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 3096 ± 48 K
Stellar metal abundance ([Fe/H] or [M/H])   −0.15 ± 0.09 dex
Stellar mass 0.1844 ± 0.0045   Msun
Stellar radius 0.2159 ± 0.0030 Rsun
Stellar logarithmic surface gravity 5.041 ± 0.016 c.g.s.
Stellar mean density 18.3 ± 0.7
( 25.82 ± 0.99 )
ρsun
g cm-3
Orbital eccentricity 0.0 +0.050 −0.0  
Orbital semimajor axis   0.0270 ± 0.0005  AU
Planetary mass 0.0060 ± 0.0002
( 1.907 ± 0.064 )
Mjup
Mearth
Planetary radius 0.1135 ± 0.0023
( 1.272 ± 0.026 )
Rjup
Rearth
Planetary surface gravity m/s2
log(cgs)
Planetary mean density 3.8 ± 0.3
( 5.04 ± 0.40 )
ρjup
g cm-3
Planetary equilibrium temperature 422 ± 7 K
Reference of detailed study arXiv:2310.15490  

 

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

 


Page generated on 2024/04/19           John Southworth   (Keele University, UK)