TEPCat: K2-234


 

This page summarises the information held within TEPCat for the transiting planetary system K2-234. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2018AJ....156..127Y  
Date of discovery paper 2018 / 3 / 9 y / m / d
Data/telescope used for discovery K2  
Right ascension 10 18 41.06 h m s
Declination +10 07 44.5 d m s
Right ascension (decimal) 154.67108 degrees
Declination (decimal) 10.12903 degrees
V-band apparent magnitude 9.38 mag
K-band apparent magnitude 7.72 mag
Transit duration 0.2378
( 5.707 )
day
hour
Transit depth 0.14 %
Time of mid-transit   2457913.8050 ± 0.0010     HJD or BJD
Orbital period 11.81430 ± 0.00020 days
Reference for orbital ephemeris   2018AJ....156..127Y  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 5622 +70 −71 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.436 +0.040 −0.050 dex
Stellar mass 1.324 +0.044 −0.041   Msun
Stellar radius 1.733 ± 0.047 Rsun
Stellar logarithmic surface gravity 4.083 +0.023 −0.022 c.g.s.
Stellar mean density 0.254 +0.021 −0.018
( 0.358 +0.030 −0.025 )
ρsun
g cm-3
Orbital eccentricity 0.22 +0.10 −0.12  
Orbital semimajor axis   0.1115 ± 0.0012  AU
Planetary mass 0.121 +0.018 −0.019
( 38.5 +5.7 −6.0 )
Mjup
Mearth
Planetary radius 0.648 +0.029 −0.028
( 7.26 +0.33 −0.31 )
Rjup
Rearth
Planetary surface gravity 7.1 +1.2 −1.1
2.85 +0.07 −0.07
m/s2
log(cgs)
Planetary mean density 0.412 +0.083 −0.072
( 0.547 +0.110 −0.096 )
ρjup
g cm-3
Planetary equilibrium temperature 1068 +14 −15 K
Reference of detailed study 2018AJ....156..127Y  

 

K2-234 does not have an entry in the catalogue of orbital obliquity measurements.

 

K2-234 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)