TEPCat: EPIC 218916923


 

This page summarises the information held within TEPCat for the transiting planetary system EPIC 218916923. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper arXiv:1702.00691  
Date of discovery paper 2017 / 2 / 3 y / m / d
Right ascension 19 16 15.97 h m s
Declination −17 54 38.5 d m s
V-band apparent magnitude 11.65 mag
K-band apparent magnitude 9.66 mag
Transit duration 0.2069
( 4.966 )
day
hour
Transit depth 1.1 %
Time of mid-transit   2457325.81705 ± 0.00033     HJD or BJD
Orbital period 28.38229 ± 0.00027 days
Reference for orbital ephemeris   arXiv:1702.00691  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 5287 ± 60 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.21 ± 0.05 dex
Stellar mass 0.918 ± 0.028   Msun
Stellar radius 0.860 ± 0.031 Rsun
Stellar logarithmic surface gravity 4.504 ± 0.035 c.g.s.
Stellar mean density 1.55 ± 0.14
( 2.19 ± 0.20 )
ρsun
g cm-3
Orbital eccentricity 0.0  
Orbital semimajor axis   0.1811 ± 0.0085  AU
Planetary mass 0.381 ± 0.045
( 121 ± 14 )
Mjup
Mearth
Planetary radius 0.812 ± 0.030
( 9.10 ± 0.34 )
Rjup
Rearth
Planetary surface gravity m/s2
log(cgs)
Planetary mean density 0.66 ± 0.11
( 0.88 ± 0.15 )
ρjup
g cm-3
Planetary equilibrium temperature 555 ± 11 K
Reference of detailed study arXiv:1702.00691  

 

EPIC 218916923 does not have an entry in the catalogue of Rossiter-McLaughlin measurements.

 

EPIC 218916923 has not been analysed as part of the Homogeneous Studies of Transiting Extrasolar Planets project.

 


Page generated on 2017/12/12           John Southworth   (Keele University, UK)