TEPCat: K2-308


 

This page summarises the information held within TEPCat for the transiting planetary system K2-308. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2019AJ....158...62R  
Date of discovery paper 2019 / 6 / 7 y / m / d
Data/telescope used for discovery K2  
Right ascension 05 13 21.39 h m s
Declination +16 24 51.1 d m s
Right ascension (decimal) 78.33912 degrees
Declination (decimal) 16.41419 degrees
V-band apparent magnitude 14.96 mag
K-band apparent magnitude 13.21 mag
Transit duration 0.129
( 3.10 )
day
hour
Transit depth 0.6 %
Time of mid-transit   2457823.2233 ± 0.0006     HJD or BJD
Orbital period 3.38628 ± 0.00002 days
Reference for orbital ephemeris   2019AJ....158...62R  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 6100 ± 263 K
Stellar metal abundance ([Fe/H] or [M/H])   −0.10 ± 0.08 dex
Stellar mass 1.09 ± 0.09   Msun
Stellar radius 1.24 ± 0.10 Rsun
Stellar logarithmic surface gravity 3.94 ± 0.44 c.g.s.
Stellar mean density ρsun
g cm-3
Orbital eccentricity  
Orbital semimajor axis     AU
Planetary mass Mjup
Mearth
Planetary radius 0.885 ± 0.088
( 9.92 ± 0.99 )
Rjup
Rearth
Planetary surface gravity m/s2
log(cgs)
Planetary mean density ρjup
g cm-3
Planetary equilibrium temperature K
Reference of detailed study 2019AJ....158...62R  

 

K2-308 does not have an entry in the catalogue of orbital obliquity measurements.

 

K2-308 has not been analysed as part of the Homogeneous Studies of Transiting Extrasolar Planets project.

 


Page generated on 2022/12/07           John Southworth   (Keele University, UK)