TEPCat: Kepler-438b


 

This page summarises the information held within TEPCat for the transiting planetary system Kepler-438b. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2015ApJ...800...99T  
Date of discovery paper 2015 / 1 / 7 y / m / d
Right ascension 18 46 34.99 h m s
Declination +41 57 03.9 d m s
V-band apparent magnitude 15.16 mag
K-band apparent magnitude 11.20 mag
Transit duration 0.145
( 3.48 )
day
hour
Transit depth 0.04 %
Time of mid-transit   2455673.0307 ± 0.0044     HJD or BJD
Orbital period 35.23319 ± 0.00025 days
Reference for orbital ephemeris   2015ApJ...800...99T  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 3748 ± 112 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.16 ± 0.14 dex
Stellar mass 0.544 +0.041 −0.061   Msun
Stellar radius 0.520 +0.038 −0.061 Rsun
Stellar logarithmic surface gravity 4.740 +0.059 −0.029 c.g.s.
Stellar mean density 3.91 +1.08 −0.55
( 5.52 +1.52 −0.78 )
ρsun
g cm-3
Orbital eccentricity 0.03 +0.10 −0.03  
Orbital semimajor axis   0.166 +0.051 −0.042  AU
Planetary mass Mjup
Mearth
Planetary radius 0.100 +0.014 −0.015
( 1.12 +0.16 −0.17 )
Rjup
Rearth
Planetary surface gravity m/s2
log(cgs)
Planetary mean density ρjup
g cm-3
Planetary equilibrium temperature K
Reference of detailed study 2015ApJ...800...99T  

 

Kepler-438b does not have an entry in the catalogue of Rossiter-McLaughlin measurements.

 

Kepler-438b has not been analysed as part of the Homogeneous Studies of Transiting Extrasolar Planets project.

 


Page generated on 2017/12/15           John Southworth   (Keele University, UK)