TEPCat: K2-233b


 

This page summarises the information held within TEPCat for the transiting planetary system K2-233b. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2018AJ....155..222D  
Date of discovery paper 2018 / 3 / 15 y / m / d
Data/telescope used for discovery K2  
Right ascension 15 21 55.20 h m s
Declination −20 13 54.0 d m s
Right ascension (decimal) 230.48000 degrees
Declination (decimal) -20.23167 degrees
V-band apparent magnitude 10.73 mag
K-band apparent magnitude 8.38 mag
Transit duration 0.0828
( 1.987 )
day
hour
Transit depth 0.018 %
Time of mid-transit   2457791.6910 ± 0.0026     HJD or BJD
Orbital period 2.46750 ± 0.00004 days
Reference for orbital ephemeris   2020A+A...640A..48L  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 5033 +41 −35 K
Stellar metal abundance ([Fe/H] or [M/H])   −0.09 ± 0.03 dex
Stellar mass 0.79 ± 0.01   Msun
Stellar radius 0.71 ± 0.01 Rsun
Stellar logarithmic surface gravity 4.64 ± 0.01 c.g.s.
Stellar mean density 2.25 +0.04 −0.03
( 3.175 +0.056 −0.042 )
ρsun
g cm-3
Orbital eccentricity 0.079 +0.048 −0.029  
Orbital semimajor axis   0.03308 +0.00010 −0.00009  AU
Planetary mass 0.0075 +0.0047 −0.0041
( 2.4 +1.5 −1.3 )
Mjup
Mearth
Planetary radius 0.1173 ± 0.0032
( 1.315 ± 0.036 )
Rjup
Rearth
Planetary surface gravity 13 ± 8
3.1 ± 0.2
m/s2
log(cgs)
Planetary mean density 4.3 +2.4 −2.8
( 5.7 +3.2 −3.7 )
ρjup
g cm-3
Planetary equilibrium temperature 1121 +10 −9 K
Reference of detailed study 2023MNRAS.522.3458B  

 

K2-233b does not have an entry in the catalogue of orbital obliquity measurements.

 


Page generated on 2024/04/19           John Southworth   (Keele University, UK)