TEPCat: K2-55


 

This page summarises the information held within TEPCat for the transiting system K2-55. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2016ApJS..226....7C  
Date of discovery paper 2016 / 7 / 19 y / m / d
Right ascension 22 15 00.46 h m s
Declination −17 15 02.5 d m s
V-band apparent magnitude 13.55 mag
K-band apparent magnitude 10.47 mag
Transit duration 0.084
( 2.02 )
day
hour
Transit depth 0.30 %
Time of mid-transit   2456983.42298 ± 0.00040     HJD or BJD
Orbital period 2.849258 ± 0.000033 days
Reference for orbital ephemeris   2016ApJS..226....7C  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 4456 ± 148 K
Stellar metal abundance ([Fe/H] or [M/H])   dex
Stellar mass 0.696 ± 0.047   Msun
Stellar radius 0.630 ± 0.050 Rsun
Stellar logarithmic surface gravity 4.673 ± 0.050 c.g.s.
Stellar mean density ρsun
g cm-3
Orbital eccentricity  
Orbital semimajor axis   0.035 ± 0.001  AU
Planetary mass Mjup
Mearth
Planetary radius 0.341 ± 0.028
( 3.82 ± 0.31 )
Rjup
Rearth
Planetary surface gravity m/s2
log(cgs)
Planetary mean density ρjup
g cm-3
Planetary equilibrium temperature K
Reference of detailed study 2016ApJS..226....7C  

 

K2-55 does not have an entry in the catalogue of Rossiter-McLaughlin measurements.

 

K2-55 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)