TEPCat: K2-108


 

This page summarises the information held within TEPCat for the transiting planetary system K2-108. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2017AJ....153..142P  
Date of discovery paper 2017 / 2 / 2 y / m / d
Right ascension 08 13 31.65 h m s
Declination +16 25 10.6 d m s
V-band apparent magnitude 12.47 mag
K-band apparent magnitude 10.56 mag
Transit duration 0.16
( 3.8 )
day
hour
Transit depth 0.09 %
Time of mid-transit   2457145.0965 ± 0.0019     HJD or BJD
Orbital period 4.73401 ± 0.00024 days
Reference for orbital ephemeris   2017AJ....153..142P  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 5474 ± 60 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.33 ± 0.04 dex
Stellar mass 1.121 +0.065 −0.053   Msun
Stellar radius 1.75 ± 0.14 Rsun
Stellar logarithmic surface gravity 3.99 ± 0.05 c.g.s.
Stellar mean density ρsun
g cm-3
Orbital eccentricity 0.180 ± 0.042  
Orbital semimajor axis   0.0573 ± 0.0010  AU
Planetary mass 0.187 ± 0.014
( 59.4 ± 4.5 )
Mjup
Mearth
Planetary radius 0.471 ± 0.048
( 5.28 ± 0.54 )
Rjup
Rearth
Planetary surface gravity m/s2
log(cgs)
Planetary mean density 1.67 +0.58 −0.41
( 2.22 +0.77 −0.54 )
ρjup
g cm-3
Planetary equilibrium temperature 1446 ± 48 K
Reference of detailed study 2017AJ....153..142P  

 

K2-108 does not have an entry in the catalogue of Rossiter-McLaughlin measurements.

 

K2-108 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)