TEPCat: K2-133b


This page summarises the information held within TEPCat for the transiting planetary system K2-133b. Please see here for descriptions of the quantities given below.


Discovery and basic observable quantities:
Quantity Value Unit
Reference of discovery paper 2018MNRAS.473L.131W  
Date of discovery paper 2017 / 10 / 14 y / m / d
Data/telescope used for discovery K2  
Right ascension 04 40 35.63 h m s
Declination +25 00 36.1 d m s
Right ascension (decimal) 70.14846 degrees
Declination (decimal) 25.01003 degrees
V-band apparent magnitude 14.00 mag
K-band apparent magnitude 10.28 mag
Transit duration 0.051
( 1.22 )
Transit depth 0.071 %
Time of mid-transit   2457821.3150 ± 0.0016     HJD or BJD
Orbital period 3.07133 ± 0.00011 days
Reference for orbital ephemeris   2019MNRAS.487.1865W  


Physical properties from the most recent detailed study:
Quantity Value Unit
Stellar effective temperature 3655 ± 80 K
Stellar metal abundance ([Fe/H] or [M/H])   dex
Stellar mass 0.455 ± 0.022   Msun
Stellar radius 0.461 +0.011 −0.01 Rsun
Stellar logarithmic surface gravity c.g.s.
Stellar mean density ρsun
g cm-3
Orbital eccentricity  
Orbital semimajor axis   0.03194 +0.00025 −0.00026  AU
Planetary mass Mjup
Planetary radius 0.120 ± 0.007
( 1.345 ± 0.078 )
Planetary surface gravity m/s2
Planetary mean density ρjup
g cm-3
Planetary equilibrium temperature K
Reference of detailed study 2019MNRAS.487.1865W  


K2-133b does not have an entry in the catalogue of orbital obliquity measurements.


K2-133b 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)