TEPCat: Kepler-8


 

This page summarises the information held within TEPCat for the transiting planetary system Kepler-8. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2010ApJ...724.1108J  
Date of discovery paper 2010 / 1 / 5 y / m / d
Right ascension 18 45 09.14 h m s
Declination +42 27 03.8 d m s
V-band apparent magnitude 13.65 mag
K-band apparent magnitude 12.29 mag
Transit duration 0.1337
( 3.209 )
day
hour
Transit depth 0.98 %
Time of mid-transit   2455003.433596 ± 0.000064     HJD or BJD
Orbital period 3.52249905 ± 0.00000083 days
Reference for orbital ephemeris   2013A+A...560A.112M  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 6213 ± 150 K
Stellar metal abundance ([Fe/H] or [M/H])   −0.055 ± 0.05 dex
Stellar mass 1.230 ± 0.072   Msun
Stellar radius 1.495 ± 0.037 Rsun
Stellar logarithmic surface gravity 4.178 ± 0.022 c.g.s.
Stellar mean density 0.368 ± 0.014
( 0.519 ± 0.020 )
ρsun
g cm-3
Orbital eccentricity 0.0  
Orbital semimajor axis   0.0485 ± 0.0012  AU
Planetary mass 0.59 ± 0.12
( 187 ± 38 )
Mjup
Mearth
Planetary radius 1.381 ± 0.037
( 15.48 ± 0.41 )
Rjup
Rearth
Planetary surface gravity 7.7 ± 1.4
2.89 ± 0.07
m/s2
log(cgs)
Planetary mean density 0.210 ± 0.040
( 0.279 ± 0.053 )
ρjup
g cm-3
Planetary equilibrium temperature 1662 ± 41 K
Reference of detailed study 2011MNRAS.417.2166S  

 

Entries in the catalogue of Rossiter-McLaughlin measurements:
 
Reference λ (degrees)
Jenkins et al. (2011)   −26.4   ±   10.1  
Albrecht et al. (2012)   5   ±   7  

 

 

Kepler-8 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)