TEPCat: Kepler-12


 

This page summarises the information held within TEPCat for the transiting planetary system Kepler-12. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2011ApJS..197....9F  
Date of discovery paper 2011 / 9 / 9 y / m / d
Right ascension 19 04 58.42 h m s
Declination +50 02 25.3 d m s
V-band apparent magnitude 13.53 mag
K-band apparent magnitude 12.07 mag
Transit duration 0.19573
( 4.6975 )
day
hour
Transit depth 1.6 %
Time of mid-transit   2455004.00835 ± 0.00002     HJD or BJD
Orbital period 4.4379637 ± 0.0000002 days
Reference for orbital ephemeris   2011ApJS..197....9F  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 5947 ± 100 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.07 ± 0.04 dex
Stellar mass 1.157 +0.148 −0.078   Msun
Stellar radius 1.490 +0.061 −0.038 Rsun
Stellar logarithmic surface gravity 4.155 +0.018 −0.014 c.g.s.
Stellar mean density 0.350 +0.006 −0.009
( 0.4938 +0.0085 −0.0127 )
ρsun
g cm-3
Orbital eccentricity 0.0  
Orbital semimajor axis   0.0555 +0.0022 −0.0013  AU
Planetary mass 0.430 +0.053 −0.044
( 136 +16 −13 )
Mjup
Mearth
Planetary radius 1.706 +0.069 −0.039
( 19.12 + 0.77 − 0.44 )
Rjup
Rearth
Planetary surface gravity 3.66 +0.33 −0.34
2.56 +0.04 −0.04
m/s2
log(cgs)
Planetary mean density 0.081 ± 0.008
( 0.107 ± 0.011 )
ρjup
g cm-3
Planetary equilibrium temperature 1485 ± 25 K
Reference of detailed study 2012MNRAS.426.1291S  

 

Kepler-12 does not have an entry in the catalogue of Rossiter-McLaughlin measurements.

 

Kepler-12 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)