TEPCat: K2-261


 

This page summarises the information held within TEPCat for the transiting planetary system K2-261. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2019MNRAS.483.1970B  
Date of discovery paper 2018 / 6 / 12 y / m / d
Data/telescope used for discovery K2  
Right ascension 10 52 07.78 h m s
Declination +00 29 36.1 d m s
Right ascension (decimal) 163.03242 degrees
Declination (decimal) 0.49336 degrees
V-band apparent magnitude 10.61 mag
K-band apparent magnitude 8.89 mag
Transit duration 0.23
( 5.5 )
day
hour
Transit depth 0.3 %
Time of mid-transit   2457906.83957 ± 0.00049     HJD or BJD
Orbital period 11.63365 ± 0.00010 days
Reference for orbital ephemeris   2019MNRAS.483.1970B  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 5513 ± 51 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.26 ± 0.03 dex
Stellar mass 1.105 ± 0.019   Msun
Stellar radius 1.669 +0.022 −0.021 Rsun
Stellar logarithmic surface gravity 4.032 ± 0.015 c.g.s.
Stellar mean density ρsun
g cm-3
Orbital eccentricity 0.42 ± 0.03  
Orbital semimajor axis   0.10376 +0.00043 −0.00051  AU
Planetary mass 0.179 ± 0.021
( 56.9 ± 6.7 )
Mjup
Mearth
Planetary radius 0.840 ± 0.011
( 9.42 ± 0.12 )
Rjup
Rearth
Planetary surface gravity m/s2
log(cgs)
Planetary mean density 0.28 ± 0.04
( 0.371 ± 0.053 )
ρjup
g cm-3
Planetary equilibrium temperature 1066 +11 −13 K
Reference of detailed study 2019MNRAS.483.1970B  

 

K2-261 does not have an entry in the catalogue of orbital obliquity measurements.

 

K2-261 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)