TEPCat: K2-229d


 

This page summarises the information held within TEPCat for the transiting planetary system K2-229d. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2018NatAs...2..393S  
Date of discovery paper 2018 / 5 / 22 y / m / d
Right ascension 12 27 29.58 h m s
Declination −06 43 18.8 d m s
V-band apparent magnitude 10.98 mag
K-band apparent magnitude 9.05 mag
Transit duration 0.07
( 1.7 )
day
hour
Transit depth 0.10 %
Time of mid-transit   2457623.1 ± 0.5     HJD or BJD
Orbital period 31.0 ± 1.1 days
Reference for orbital ephemeris   2018NatAs...2..393S  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 5185 ± 32 K
Stellar metal abundance ([Fe/H] or [M/H])   −0.06 ± 0.02 dex
Stellar mass 0.837 +0.019 −0.025   Msun
Stellar radius 0.793 +0.032 −0.020 Rsun
Stellar logarithmic surface gravity 4.56 +0.03 −0.05 c.g.s.
Stellar mean density ρsun
g cm-3
Orbital eccentricity 0.0  
Orbital semimajor axis   0.1820 ± 0.0042  AU
Planetary mass 0.0 +0.079 −0.0
( 0 +25 −0 )
Mjup
Mearth
Planetary radius 0.236 ± 0.021
( 2.65 ± 0.24 )
Rjup
Rearth
Planetary surface gravity m/s2
log(cgs)
Planetary mean density 0.0 +7.2 −0.0
( 0.0 +9.6 −0.0 )
ρjup
g cm-3
Planetary equilibrium temperature 522 ± 13 K
Reference of detailed study 2018NatAs...2..393S  

 

K2-229d does not have an entry in the catalogue of orbital obliquity measurements.

 

K2-229d 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)