TEPCat: K2-77


 

This page summarises the information held within TEPCat for the transiting planetary system K2-77. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2017MNRAS.464..850G  
Date of discovery paper 2016 / 6 / 21 y / m / d
Data/telescope used for discovery K2  
Right ascension 03 40 54.82 h m s
Declination +12 34 21.4 d m s
Right ascension (decimal) 55.22842 degrees
Declination (decimal) 12.57261 degrees
V-band apparent magnitude 12.16 mag
K-band apparent magnitude 9.80 mag
Transit duration 0.109
( 2.62 )
day
hour
Transit depth 0.1 %
Time of mid-transit   2457070.8060 ± 0.0018     HJD or BJD
Orbital period 8.19980 ± 0.00070 days
Reference for orbital ephemeris   2017MNRAS.464..850G  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 4970 ± 45 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.29 ± 0.06 dex
Stellar mass 0.80 ± 0.12   Msun
Stellar radius 0.76 ± 0.03 Rsun
Stellar logarithmic surface gravity 4.47 ± 0.13 c.g.s.
Stellar mean density 1.8 ± 0.3
( 2.54 ± 0.42 )
ρsun
g cm-3
Orbital eccentricity 0.14 +0.22 −0.09  
Orbital semimajor axis     AU
Planetary mass 0.0 +1.9 −0.0
( 0 +603 −0 )
Mjup
Mearth
Planetary radius 0.205 ± 0.014
( 2.30 ± 0.16 )
Rjup
Rearth
Planetary surface gravity m/s2
log(cgs)
Planetary mean density ρjup
g cm-3
Planetary equilibrium temperature K
Reference of detailed study 2017MNRAS.464..850G  

 

K2-77 does not have an entry in the catalogue of orbital obliquity measurements.

 

K2-77 has not been analysed as part of the Homogeneous Studies of Transiting Extrasolar Planets project.

 


Page generated on 2022/12/07           John Southworth   (Keele University, UK)