TEPCat: Kepler-278b


 

This page summarises the information held within TEPCat for the transiting planetary system Kepler-278b. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2014ApJ...784...45R  
Date of discovery paper 2014 / 3 / 20 y / m / d
Right ascension 19 20 25.72 h m s
Declination +38 42 08.0 d m s
V-band apparent magnitude 11.83 mag
K-band apparent magnitude 9.46 mag
Transit duration 0.3128
( 7.507 )
day
hour
Transit depth 0.02 %
Time of mid-transit   2454971.51248 ± 0.00644     HJD or BJD
Orbital period 30.160546 ± 0.000311 days
Reference for orbital ephemeris   arXiv:1912.10278  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 4965 ± 54 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.22 ± 0.04 dex
Stellar mass 1.227 ± 0.061   Msun
Stellar radius 2.861 +0.060 −0.066 Rsun
Stellar logarithmic surface gravity 3.58 ± 0.10 c.g.s.
Stellar mean density 0.052 ± 0.004
( 0.0734 ± 0.0056 )
ρsun
g cm-3
Orbital eccentricity 0.696 +0.017 −0.026  
Orbital semimajor axis   0.202 ± 0.005  AU
Planetary mass 0.18 +0.12 −0.04
( 57 +38 −12 )
Mjup
Mearth
Planetary radius 0.353 ± 0.007
( 3.957 ± 0.078 )
Rjup
Rearth
Planetary surface gravity m/s2
log(cgs)
Planetary mean density 3.8 +2.4 −0.8
( 5.0 +3.2 −1.1 )
ρjup
g cm-3
Planetary equilibrium temperature 586 ± 19 K
Reference of detailed study arXiv:1912.10278  

 

Kepler-278b does not have an entry in the catalogue of orbital obliquity measurements.

 

Kepler-278b has not been analysed as part of the Homogeneous Studies of Transiting Extrasolar Planets project.

 


Page generated on 2021/11/15           John Southworth   (Keele University, UK)