TEPCat: EPIC 228732031


 

This page summarises the information held within TEPCat for the transiting planetary system EPIC 228732031. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper arXiv:1710.00076  
Date of discovery paper 2017 / 10 / 3 y / m / d
Right ascension 12 11 00.38 h m s
Declination −09 45 54.8 d m s
V-band apparent magnitude 12.12 mag
K-band apparent magnitude 10.05 mag
Transit duration 0.058
( 1.39 )
day
hour
Transit depth 0.05 %
Time of mid-transit   2457582.9360 ± 0.0011     HJD or BJD
Orbital period 0.3693038 ± 0.0000091 days
Reference for orbital ephemeris   arXiv:1710.00076  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 5200 ± 100 K
Stellar metal abundance ([Fe/H] or [M/H])   −0.02 ± 0.08 dex
Stellar mass 0.84 ± 0.03   Msun
Stellar radius 0.81 ± 0.03 Rsun
Stellar logarithmic surface gravity 4.62 ± 0.10 c.g.s.
Stellar mean density 1.58 ± 0.23
( 2.23 ± 0.32 )
ρsun
g cm-3
Orbital eccentricity 0.0 +0.26 −0.0  
Orbital semimajor axis     AU
Planetary mass 0.0214 ± 0.0050
( 6.8 ± 1.6 )
Mjup
Mearth
Planetary radius 0.161 +0.014 −0.011
( 1.80 +0.16 −0.12 )
Rjup
Rearth
Planetary surface gravity m/s2
log(cgs)
Planetary mean density 4.8 +2.3 −2.1
( 6.4 +3.1 −2.8 )
ρjup
g cm-3
Planetary equilibrium temperature K
Reference of detailed study arXiv:1710.00076  

 

EPIC 228732031 does not have an entry in the catalogue of Rossiter-McLaughlin measurements.

 

EPIC 228732031 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)