TEPCat: K2-146b


 

This page summarises the information held within TEPCat for the transiting planetary system K2-146b. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2018AJ....156..277L  
Date of discovery paper 2018 / 10 / 10 y / m / d
Right ascension 08 40 06.42 h m s
Declination +19 05 34.4 d m s
V-band apparent magnitude 16.25 mag
K-band apparent magnitude 11.37 mag
Transit duration 0.034
( 0.82 )
day
hour
Transit depth 0.4 %
Time of mid-transit   2458204.5902 ± 0.0005     HJD or BJD
Orbital period 2.64460 ± 0.00006 days
Reference for orbital ephemeris   arXiv:1907.10620  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 3385 ± 70 K
Stellar metal abundance ([Fe/H] or [M/H])   −0.02 ± 0.12 dex
Stellar mass 0.331 ± 0.009   Msun
Stellar radius 0.330 ± 0.010 Rsun
Stellar logarithmic surface gravity 4.906 ± 0.041 c.g.s.
Stellar mean density 9.3 ± 0.8
( 13.1 ± 1.1 )
ρsun
g cm-3
Orbital eccentricity 0.129 ± 0.019  
Orbital semimajor axis     AU
Planetary mass 0.0182 ± 0.0002
( 5.786 ± 0.064 )
Mjup
Mearth
Planetary radius 0.183 ± 0.005
( 2.051 ± 0.056 )
Rjup
Rearth
Planetary surface gravity m/s2
log(cgs)
Planetary mean density ρjup
g cm-3
Planetary equilibrium temperature K
Reference of detailed study arXiv:1907.10620  

 

K2-146b does not have an entry in the catalogue of orbital obliquity measurements.

 

K2-146b has not been analysed as part of the Homogeneous Studies of Transiting Extrasolar Planets project.

 


Page generated on 2021/12/02           John Southworth   (Keele University, UK)