TEPCat: K2-27b


 

This page summarises the information held within TEPCat for the transiting planetary system K2-27b. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2016ApJ...820...56V  
Date of discovery paper 2016 / 2 / 8 y / m / d
Right ascension 11 26 03.64 h m s
Declination +01 13 50.7 d m s
V-band apparent magnitude 12.64 mag
K-band apparent magnitude 10.70 mag
Transit duration 0.13
( 3.1 )
day
hour
Transit depth 0.28 %
Time of mid-transit   2456812.8451 ± 0.0010     HJD or BJD
Orbital period 6.77145 ± 0.00013 days
Reference for orbital ephemeris   2016ApJ...820...56V  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 5248 ± 60 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.13 ± 0.04 dex
Stellar mass 0.866 +0.029 −0.023   Msun
Stellar radius 0.885 ± 0.043 Rsun
Stellar logarithmic surface gravity 4.48 ± 0.05 c.g.s.
Stellar mean density 1.45 ± 0.27
( 2.05 ± 0.38 )
ρsun
g cm-3
Orbital eccentricity 0.251 ± 0.088  
Orbital semimajor axis   0.06702 ± 0.00071  AU
Planetary mass 0.097 ± 0.014
( 30.8 ± 4.5 )
Mjup
Mearth
Planetary radius 0.400 ± 0.021
( 4.48 ± 0.24 )
Rjup
Rearth
Planetary surface gravity m/s2
log(cgs)
Planetary mean density 1.41 ± 0.31
( 1.87 ± 0.41 )
ρjup
g cm-3
Planetary equilibrium temperature 902 ± 28 K
Reference of detailed study 2017AJ....153..142P  

 

K2-27b does not have an entry in the catalogue of Rossiter-McLaughlin measurements.

 

K2-27b has not been analysed as part of the Homogeneous Studies of Transiting Extrasolar Planets project.

 


Page generated on 2017/12/15           John Southworth   (Keele University, UK)