TEPCat: K2-137


 

This page summarises the information held within TEPCat for the transiting planetary system K2-137. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2018MNRAS.474.5523S  
Date of discovery paper 2017 / 7 / 17 y / m / d
Right ascension 12 27 28.97 h m s
Declination −06 11 42.8 d m s
V-band apparent magnitude 15.50 mag
K-band apparent magnitude 10.88 mag
Transit duration 0.0262
( 0.629 )
day
hour
Transit depth 0.035 %
Time of mid-transit   2457583.0242 ± 0.0004     HJD or BJD
Orbital period 0.179715 ± 0.000001 days
Reference for orbital ephemeris   2018MNRAS.474.5523S  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 3492 ± 70 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.08 ± 0.12 dex
Stellar mass 0.463 ± 0.052   Msun
Stellar radius 0.442 ± 0.044 Rsun
Stellar logarithmic surface gravity 4.815 ± 0.043 c.g.s.
Stellar mean density ρsun
g cm-3
Orbital eccentricity 0.0  
Orbital semimajor axis   0.0058 ± 0.0006  AU
Planetary mass 0.0 +0.7 −0.0
( 0 +222 −0 )
Mjup
Mearth
Planetary radius 0.079 ± 0.008
( 0.886 ± 0.090 )
Rjup
Rearth
Planetary surface gravity m/s2
log(cgs)
Planetary mean density ρjup
g cm-3
Planetary equilibrium temperature 1471 ± 47 K
Reference of detailed study 2018MNRAS.474.5523S  

 

K2-137 does not have an entry in the catalogue of orbital obliquity measurements.

 

K2-137 has not been analysed as part of the Homogeneous Studies of Transiting Extrasolar Planets project.

 


Page generated on 2019/07/16           John Southworth   (Keele University, UK)