TEPCat: K2-155b


 

This page summarises the information held within TEPCat for the transiting planetary system K2-155b. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper arXiv:1801.06249  
Date of discovery paper 2018 / 1 / 22 y / m / d
Right ascension 04 21 52.49 h m s
Declination +21 21 13.0 d m s
V-band apparent magnitude 12.81 mag
K-band apparent magnitude 9.50 mag
Transit duration 0.1004
( 2.410 )
day
hour
Transit depth 0.068 %
Time of mid-transit   2457825.068 ± 0.002     HJD or BJD
Orbital period 6.34365 ± 0.00028 days
Reference for orbital ephemeris   2018AJ....155..124H  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 3919 ± 70 K
Stellar metal abundance ([Fe/H] or [M/H])   −0.42 ± 0.12 dex
Stellar mass 0.540 ± 0.056   Msun
Stellar radius 0.526 ± 0.053 Rsun
Stellar logarithmic surface gravity 4.732 ± 0.046 c.g.s.
Stellar mean density 3.84 ± 0.79
( 5.4 ± 1.1 )
ρsun
g cm-3
Orbital eccentricity 0.0  
Orbital semimajor axis   0.0546 ± 0.0019  AU
Planetary mass Mjup
Mearth
Planetary radius 0.138 +0.018 −0.015
( 1.55 +0.20 −0.17 )
Rjup
Rearth
Planetary surface gravity m/s2
log(cgs)
Planetary mean density ρjup
g cm-3
Planetary equilibrium temperature 708 +38 −31 K
Reference of detailed study 2018AJ....155..124H  

 

K2-155b does not have an entry in the catalogue of orbital obliquity measurements.

 

K2-155b has not been analysed as part of the Homogeneous Studies of Transiting Extrasolar Planets project.

 


Page generated on 2019/07/16           John Southworth   (Keele University, UK)