TEPCat: Kepler-221b


 

This page summarises the information held within TEPCat for the transiting system Kepler-221b. 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 46 37.14 h m s
Declination +46 50 07.0 d m s
V-band apparent magnitude 13.96 mag
K-band apparent magnitude 11.90 mag
Transit duration 0.0860
( 2.064 )
day
hour
Transit depth 0.04 %
Time of mid-transit   2454965.72929 ± 0.00084     HJD or BJD
Orbital period 2.795906 ± 0.000004 days
Reference for orbital ephemeris   2014ApJ...784...45R  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 5243 ± 100 K
Stellar metal abundance ([Fe/H] or [M/H])   −0.03 ± 0.10 dex
Stellar mass 0.862   Msun
Stellar radius 0.821 ± 0.075 Rsun
Stellar logarithmic surface gravity 4.543 ± 0.150 c.g.s.
Stellar mean density 2.199 ± 0.398
( 3.10 ± 0.56 )
ρsun
g cm-3
Orbital eccentricity  
Orbital semimajor axis     AU
Planetary mass Mjup
Mearth
Planetary radius 0.153 ± 0.015
( 1.71 ± 0.17 )
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-221b does not have an entry in the catalogue of Rossiter-McLaughlin measurements.

 

Kepler-221b 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)