TEPCat: Kepler-9c


 

This page summarises the information held within TEPCat for the transiting planetary system Kepler-9c. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2010Sci...330...51H  
Date of discovery paper 2010 / 8 / 27 y / m / d
Right ascension 19 02 17.76 h m s
Declination +38 24 03.2 d m s
V-band apparent magnitude 13.93 mag
K-band apparent magnitude 12.34 mag
Transit duration 0.17121
( 4.1090 )
day
hour
Transit depth 0.60 %
Time of mid-transit   2455435.95866 ± 0.00075     HJD or BJD
Orbital period 39.0153 ± 0.00013 days
Reference for orbital ephemeris   2018AJ....155...73W  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 5777 ± 61 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.12 ± 0.04 dex
Stellar mass 1.05 ± 0.03   Msun
Stellar radius 0.9742 ± 0.0083 Rsun
Stellar logarithmic surface gravity c.g.s.
Stellar mean density 1.136 ± 0.029
( 1.603 ± 0.041 )
ρsun
g cm-3
Orbital eccentricity 0.06799 ± 0.00007  
Orbital semimajor axis   0.2289 ± 0.0022  AU
Planetary mass 0.0969 ± 0.0028
( 30.80 ± 0.89 )
Mjup
Mearth
Planetary radius 0.721 ± 0.008
( 8.082 ± 0.090 )
Rjup
Rearth
Planetary surface gravity m/s2
log(cgs)
Planetary mean density 0.243 ± 0.008
( 0.322 ± 0.011 )
ρjup
g cm-3
Planetary equilibrium temperature K
Reference of detailed study arXiv:1807.00007  

 

Kepler-9c does not have an entry in the catalogue of orbital obliquity measurements.

 

Kepler-9c has not been analysed as part of the Homogeneous Studies of Transiting Extrasolar Planets project.

 


Page generated on 2018/07/18           John Southworth   (Keele University, UK)