TEPCat: K2-31


 

This page summarises the information held within TEPCat for the transiting planetary system K2-31. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2016AJ....152..132G  
Date of discovery paper 2015 / 11 / 2 y / m / d
Right ascension 16 21 45.78 h m s
Declination −23 32 52.3 d m s
V-band apparent magnitude 10.80 mag
K-band apparent magnitude 8.87 mag
Transit duration 0.0409
( 0.982 )
day
hour
Transit depth 0.6 %
Time of mid-transit   2457191.70889 ± 0.00024     HJD or BJD
Orbital period 1.257850 ± 0.000002 days
Reference for orbital ephemeris   2016AJ....152..132G  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 5412 ± 34 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.20 ± 0.03 dex
Stellar mass 1.000 ± 0.064   Msun
Stellar radius 0.986 ± 0.070 Rsun
Stellar logarithmic surface gravity 4.44 ± 0.05 c.g.s.
Stellar mean density ρsun
g cm-3
Orbital eccentricity 0.0 +0.029 −0.0  
Orbital semimajor axis   0.0220 ± 0.0018  AU
Planetary mass 1.856 ± 0.081
( 590 ± 25 )
Mjup
Mearth
Planetary radius 1.06 ± 0.35
( 11.9 ± 3.9 )
Rjup
Rearth
Planetary surface gravity m/s2
log(cgs)
Planetary mean density ρjup
g cm-3
Planetary equilibrium temperature K
Reference of detailed study 2016ApJ...823..115D  

 

K2-31 does not have an entry in the catalogue of Rossiter-McLaughlin measurements.

 

K2-31 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)