TEPCat: K2-39


 

This page summarises the information held within TEPCat for the transiting planetary system K2-39. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2016AJ....152..143V  
Date of discovery paper 2016 / 5 / 31 y / m / d
Right ascension 22 33 28.41 h m s
Declination −09 01 22.0 d m s
V-band apparent magnitude 10.83 mag
K-band apparent magnitude 8.52 mag
Transit duration 0.38
( 9.1 )
day
hour
Transit depth 0.04 %
Time of mid-transit   2456980.8236 ± 0.0039     HJD or BJD
Orbital period 4.60543 ± 0.00046 days
Reference for orbital ephemeris   2016AJ....152..143V  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 4912 ± 60 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.43 ± 0.04 dex
Stellar mass 1.192 +0.085 −0.070   Msun
Stellar radius 2.93 ± 0.21 Rsun
Stellar logarithmic surface gravity 3.58 ± 0.05 c.g.s.
Stellar mean density ρsun
g cm-3
Orbital eccentricity 0.152 +0.084 −0.066  
Orbital semimajor axis   0.0574 ± 0.0012  AU
Planetary mass 0.125 ± 0.014
( 39.7 ± 4.5 )
Mjup
Mearth
Planetary radius 0.509 ± 0.056
( 5.71 ± 0.63 )
Rjup
Rearth
Planetary surface gravity m/s2
log(cgs)
Planetary mean density 0.88 +0.35 −0.24
( 1.17 +0.46 −0.32 )
ρjup
g cm-3
Planetary equilibrium temperature 1670 ± 54 K
Reference of detailed study 2017AJ....153..142P  

 

K2-39 does not have an entry in the catalogue of Rossiter-McLaughlin measurements.

 

K2-39 has not been analysed as part of the Homogeneous Studies of Transiting Extrasolar Planets project.

 


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