TEPCat: K2-4b


 

This page summarises the information held within TEPCat for the transiting system K2-4b. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2015ApJ...809...25M  
Date of discovery paper 2015 / 3 / 27 y / m / d
Right ascension 11 38 58.95 h m s
Declination −03 54 20.1 d m s
V-band apparent magnitude 14.91 mag
K-band apparent magnitude 11.57 mag
Transit duration 0.0
( 0. )
day
hour
Transit depth 0.12 %
Time of mid-transit   2456815.51980 ± 0.00850     HJD or BJD
Orbital period 10.00411 ± 0.00163 days
Reference for orbital ephemeris   2015ApJ...809...25M  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 4197 +45 −43 K
Stellar metal abundance ([Fe/H] or [M/H])   −0.12 +0.10 −0.12 dex
Stellar mass 0.63 ± 0.03   Msun
Stellar radius 0.60 ± 0.02 Rsun
Stellar logarithmic surface gravity c.g.s.
Stellar mean density ρsun
g cm-3
Orbital eccentricity 0.0  
Orbital semimajor axis   0.0777 ± 0.0012  AU
Planetary mass Mjup
Mearth
Planetary radius 0.211 ± 0.035
( 2.37 ± 0.39 )
Rjup
Rearth
Planetary surface gravity m/s2
log(cgs)
Planetary mean density ρjup
g cm-3
Planetary equilibrium temperature 563 ± 11 K
Reference of detailed study 2015ApJ...809...25M  

 

K2-4b does not have an entry in the catalogue of Rossiter-McLaughlin measurements.

 

K2-4b 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)