TEPCat: K2-290c


 

This page summarises the information held within TEPCat for the transiting planetary system K2-290c. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2019MNRAS.484.3522H  
Date of discovery paper 2019 / 1 / 15 y / m / d
Data/telescope used for discovery K2  
Right ascension 15 39 25.87 h m s
Declination −20 11 55.7 d m s
Right ascension (decimal) 234.85779 degrees
Declination (decimal) -20.19881 degrees
V-band apparent magnitude 11.11 mag
K-band apparent magnitude 9.42 mag
Transit duration 0.339
( 8.14 )
day
hour
Transit depth 0.5 %
Time of mid-transit   2458019.1723 ± 0.0003     HJD or BJD
Orbital period 48.3674 ± 0.0003 days
Reference for orbital ephemeris   2021PNAS..11820174H  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 6302 ± 120 K
Stellar metal abundance ([Fe/H] or [M/H])   −0.06 ± 0.10 dex
Stellar mass 1.194 +0.067 −0.077   Msun
Stellar radius 1.511 +0.075 −0.072 Rsun
Stellar logarithmic surface gravity 4.23 ± 0.10 c.g.s.
Stellar mean density 0.344 +0.052 −0.045
( 0.485 +0.073 −0.063 )
ρsun
g cm-3
Orbital eccentricity 0.0 +0.241 −0.0  
Orbital semimajor axis   0.305 ± 0.017  AU
Planetary mass 0.774 ± 0.047
( 246 ± 14 )
Mjup
Mearth
Planetary radius 1.006 ± 0.050
( 11.28 ± 0.56 )
Rjup
Rearth
Planetary surface gravity m/s2
log(cgs)
Planetary mean density 0.76 ± 0.12
( 1.01 ± 0.16 )
ρjup
g cm-3
Planetary equilibrium temperature 676 ± 16 K
Reference of detailed study 2021PNAS..11820174H  

 

Entries in the catalogue of orbital obliquity measurements:
 
Reference λ (degrees)
Hjorth et al.(2021)   153   ±   8  

 

 

K2-290c has not been analysed as part of the Homogeneous Studies of Transiting Extrasolar Planets project.

 


Page generated on 2022/12/01           John Southworth   (Keele University, UK)