TEPCat: HD 191939c


 

This page summarises the information held within TEPCat for the transiting planetary system HD 191939c. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper arXiv:2002.03958  
Date of discovery paper 2020 / 2 / 11 y / m / d
Right ascension 20 08 06.15 h m s
Declination +66 51 01.1 d m s
V-band apparent magnitude 8.97 mag
K-band apparent magnitude 7.18 mag
Transit duration 0.1855
( 4.452 )
day
hour
Transit depth 0.10 %
Time of mid-transit   2458726.0534 ± 0.0006     HJD or BJD
Orbital period 28.5805 ± 0.0002 days
Reference for orbital ephemeris   arXiv:2108.02208  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 5427 ± 50 K
Stellar metal abundance ([Fe/H] or [M/H])   −0.16 ± 0.08 dex
Stellar mass 0.92 ± 0.06   Msun
Stellar radius 0.945 ± 0.021 Rsun
Stellar logarithmic surface gravity 4.40 ± 0.10 c.g.s.
Stellar mean density 1.16 +0.62 −0.28
( 1.64 +0.87 −0.40 )
ρsun
g cm-3
Orbital eccentricity 0.0  
Orbital semimajor axis   0.178 +0.033 −0.026  AU
Planetary mass 0.0226 ± 0.0044
( 7.2 ± 1.4 )
Mjup
Mearth
Planetary radius 0.287 +0.013 −0.012
( 3.22 +0.15 −0.13 )
Rjup
Rearth
Planetary surface gravity m/s2
log(cgs)
Planetary mean density 1.1 ± 0.2
( 1.46 ± 0.27 )
ρjup
g cm-3
Planetary equilibrium temperature 550 ± 45 K
Reference of detailed study arXiv:2108.02208  

 

HD 191939c does not have an entry in the catalogue of orbital obliquity measurements.

 

HD 191939c has not been analysed as part of the Homogeneous Studies of Transiting Extrasolar Planets project.

 


Page generated on 2021/12/02           John Southworth   (Keele University, UK)