TEPCat: Kepler-20b


 

This page summarises the information held within TEPCat for the transiting planetary system Kepler-20b. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2012ApJ...749...15G  
Date of discovery paper 2011 / 12 / 21 y / m / d
Right ascension 19 10 47.52 h m s
Declination +42 20 19.4 d m s
V-band apparent magnitude 12.65 mag
K-band apparent magnitude 10.87 mag
Transit duration 0.106
( 2.54 )
day
hour
Transit depth 0.040 %
Time of mid-transit   2454967.50201 ± 0.00023     HJD or BJD
Orbital period 3.6961153 ± 0.0000010 days
Reference for orbital ephemeris   2016AJ....152..160B  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 5495 ± 50 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.07 ± 0.08 dex
Stellar mass 0.948 ± 0.051   Msun
Stellar radius 0.964 ± 0.018 Rsun
Stellar logarithmic surface gravity 4.446 ± 0.01 c.g.s.
Stellar mean density 1.07 ± 0.27
( 1.51 ± 0.38 )
ρsun
g cm-3
Orbital eccentricity 0.03 +0.09 −0.03  
Orbital semimajor axis   0.0463 +0.0009 −0.0015  AU
Planetary mass 0.0305 +0.0044 −0.0045
( 9.7 +1.4 −1.4 )
Mjup
Mearth
Planetary radius 0.1667 +0.0059 −0.0030
( 1.869 +0.066 −0.034 )
Rjup
Rearth
Planetary surface gravity m/s2
log(cgs)
Planetary mean density 6.2 +1.1 −1.0
( 8.2 +1.5 −1.3 )
ρjup
g cm-3
Planetary equilibrium temperature 1105 ± 37 K
Reference of detailed study 2016AJ....152..160B  

 

Kepler-20b does not have an entry in the catalogue of Rossiter-McLaughlin measurements.

 

Kepler-20b has not been analysed as part of the Homogeneous Studies of Transiting Extrasolar Planets project.

 


Page generated on 2017/12/13           John Southworth   (Keele University, UK)