TEPCat: Kepler-38


 

This page summarises the information held within TEPCat for the transiting planetary system Kepler-38. Please see here for descriptions of the quantities given below.

This object consists of an eclipsing binary star system which is itself eclipsed by one or more transiting planets. The binarity of the central star causes problems for structured databases. The stellar data below refer specifically to the primary star, and the planetary data to the transiting planet. For further information on the secondary star or the system as a whole please consult the publication(s) referenced below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2012ApJ...758...87O  
Date of discovery paper 2012 / 6 / 21 y / m / d
Right ascension 19 07 19.29 h m s
Declination +42 16 45.1 d m s
V-band apparent magnitude 14.08 mag
K-band apparent magnitude 12.34 mag
Transit duration 0.5
( 12. )
day
hour
Transit depth 0.05 %
Time of mid-transit   2454932.112 ± 0.033     HJD or BJD
Orbital period 105.595 ± 0.045 days
Reference for orbital ephemeris   2012ApJ...758...87O  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 5623 ± 50 K
Stellar metal abundance ([Fe/H] or [M/H])   −0.11 ± 0.08 dex
Stellar mass 0.949 ± 0.059   Msun
Stellar radius 1.757 ± 0.034 Rsun
Stellar logarithmic surface gravity 3.926 ± 0.011 c.g.s.
Stellar mean density 0.1240 ± 0.0010
( 0.1750 ± 0.0014 )
ρsun
g cm-3
Orbital eccentricity 0.0 +0.032 −0.0  
Orbital semimajor axis   0.4644 ± 0.0087  AU
Planetary mass 0.0 +0.384 −0.0
( 0 +122 −0 )
Mjup
Mearth
Planetary radius 0.388 ± 0.010
( 4.35 ± 0.11 )
Rjup
Rearth
Planetary surface gravity m/s2
log(cgs)
Planetary mean density 0.0 +6.6 −0.0
( 0.0 +8.8 −0.0 )
ρjup
g cm-3
Planetary equilibrium temperature 475 K
Reference of detailed study 2012ApJ...758...87O  

 

Kepler-38 does not have an entry in the catalogue of Rossiter-McLaughlin measurements.

 

Kepler-38 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)