TEPCat: LHS 1140


 

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

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2017Natur.544..333D  
Date of discovery paper 2017 / 4 / 20 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 0.085
( 2.04 )
day
hour
Transit depth 0.6 %
Time of mid-transit   2456915.6997 ± 0.0054     HJD or BJD
Orbital period 24.73712 ± 0.00025 days
Reference for orbital ephemeris   2017Natur.544..333D  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 3131 ± 100 K
Stellar metal abundance ([Fe/H] or [M/H])   −0.24 ± 0.14 dex
Stellar mass 0.146 ± 0.019   Msun
Stellar radius 0.186 ± 0.013 Rsun
Stellar logarithmic surface gravity c.g.s.
Stellar mean density ρsun
g cm-3
Orbital eccentricity 0.0 +0.29 −0.0  
Orbital semimajor axis   0.0875 ± 0.0041  AU
Planetary mass 0.0209 ± 0.0057
( 6.6 ± 1.8 )
Mjup
Mearth
Planetary radius 0.128 ± 0.009
( 1.43 ± 0.10 )
Rjup
Rearth
Planetary surface gravity 31.8 ± 7.7
3.50 ± 0.09
m/s2
log(cgs)
Planetary mean density 9.4 ± 3.4
( 12.5 ± 4.5 )
ρjup
g cm-3
Planetary equilibrium temperature 230 ± 20 K
Reference of detailed study 2017Natur.544..333D  

 

LHS 1140 does not have an entry in the catalogue of Rossiter-McLaughlin measurements.

 

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

 


Page generated on 2017/12/12           John Southworth   (Keele University, UK)