TEPCat: Kepler-121b


 

This page summarises the information held within TEPCat for the transiting system Kepler-121b. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2014ApJ...784...45R  
Date of discovery paper 2014 / 3 / 20 y / m / d
Right ascension 19 04 38.89 h m s
Declination +39 40 40.8 d m s
V-band apparent magnitude 14.91 mag
K-band apparent magnitude 12.79 mag
Transit duration 0.0615
( 1.476 )
day
hour
Transit depth 0.11 %
Time of mid-transit   2454967.47787 ± 0.00047     HJD or BJD
Orbital period 3.177422 ± 0.000003 days
Reference for orbital ephemeris   2014ApJ...784...45R  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 5311 ± 200 K
Stellar metal abundance ([Fe/H] or [M/H])   −0.38 ± 0.50 dex
Stellar mass 0.791   Msun
Stellar radius 0.701 ± 0.380 Rsun
Stellar logarithmic surface gravity 4.646 ± 0.300 c.g.s.
Stellar mean density 3.240 ± 1.083
( 4.6 ± 1.5 )
ρsun
g cm-3
Orbital eccentricity  
Orbital semimajor axis     AU
Planetary mass Mjup
Mearth
Planetary radius 0.209 ± 0.113
( 2.3 ± 1.3 )
Rjup
Rearth
Planetary surface gravity m/s2
log(cgs)
Planetary mean density ρjup
g cm-3
Planetary equilibrium temperature K
Reference of detailed study 2014ApJ...784...45R  

 

Kepler-121b does not have an entry in the catalogue of Rossiter-McLaughlin measurements.

 

Kepler-121b has not been analysed as part of the Homogeneous Studies of Transiting Extrasolar Planets project.

 


Page generated on 2017/12/05           John Southworth   (Keele University, UK)