TEPCat: Kepler-22


 

This page summarises the information held within TEPCat for the transiting planetary system Kepler-22. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2012ApJ...745..120B  
Date of discovery paper 2011 / 12 / 8 y / m / d
Right ascension 19 16 52.19 h m s
Declination +47 53 04.0 d m s
V-band apparent magnitude 11.81 mag
K-band apparent magnitude 10.15 mag
Transit duration 0.3075
( 7.380 )
day
hour
Transit depth 0.05 %
Time of mid-transit   2455546.4248 ± 0.0011     HJD or BJD
Orbital period 289.8644 ± 0.0009 days
Reference for orbital ephemeris   2013ApJ...777..134K  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 5518 ± 44 K
Stellar metal abundance ([Fe/H] or [M/H])   −0.29 ± 0.06 dex
Stellar mass 0.970 ± 0.060   Msun
Stellar radius 0.979 ± 0.020 Rsun
Stellar logarithmic surface gravity 4.44 ± 0.06 c.g.s.
Stellar mean density 1.033 ± 0.021
( 1.458 ± 0.030 )
ρsun
g cm-3
Orbital eccentricity 0.13 +0.36 −0.13  
Orbital semimajor axis   0.848 ± 0.018  AU
Planetary mass 0.022 +0.066 −0.020
( 7.0 +21.0 −6.4 )
Mjup
Mearth
Planetary radius 0.214 +0.008 −0.016
( 2.399 +0.090 −0.179 )
Rjup
Rearth
Planetary surface gravity 26 +37 −19
3.4 +0.4 −0.6
m/s2
log(cgs)
Planetary mean density 1.8 +5.7 −1.7
( 2.4 +7.6 −2.3 )
ρjup
g cm-3
Planetary equilibrium temperature 262 K
Reference of detailed study 2013ApJ...777..134K  

 

Kepler-22 does not have an entry in the catalogue of Rossiter-McLaughlin measurements.

 

Kepler-22 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)