TEPCat: HD 207897


 

This page summarises the information held within TEPCat for the transiting planetary system HD 207897. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper arXiv:2110.08597  
Date of discovery paper 2021 / 10 / 19 y / m / d
Data/telescope used for discovery TESS  
Right ascension 21 40 44.78 h m s
Declination +84 20 00.6 d m s
Right ascension (decimal) 325.18658 degrees
Declination (decimal) 84.33350 degrees
V-band apparent magnitude 8.37 mag
K-band apparent magnitude 6.31 mag
Transit duration 0.1213
( 2.911 )
day
hour
Transit depth 0.09 %
Time of mid-transit   2458926.10942 ± 0.00048     HJD or BJD
Orbital period 16.202159 ± 0.000084 days
Reference for orbital ephemeris   arXiv:2110.08597  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 5070 +60 −57 K
Stellar metal abundance ([Fe/H] or [M/H])   −0.21 ± 0.02 dex
Stellar mass 0.800 +0.036 −0.030   Msun
Stellar radius 0.779 +0.019 −0.018 Rsun
Stellar logarithmic surface gravity 4.559 +0.026 −0.052 c.g.s.
Stellar mean density 1.69 ± 0.13
( 2.38 ± 0.18 )
ρsun
g cm-3
Orbital eccentricity 0.047 +0.057 −0.033  
Orbital semimajor axis   0.1163 +0.0017 −0.0015  AU
Planetary mass 0.0453 ± 0.0050
( 14.4 ± 1.6 )
Mjup
Mearth
Planetary radius 0.2231 +0.0073 −0.0070
( 2.501 +0.082 −0.078 )
Rjup
Rearth
Planetary surface gravity 22.5 +2.9 −2.7
3.35 +0.05 −0.06
m/s2
log(cgs)
Planetary mean density 3.81 +0.58 −0.52
( 5.05 +0.77 −0.69 )
ρjup
g cm-3
Planetary equilibrium temperature 632 +8 −7 K
Reference of detailed study arXiv:2110.08597  

 

HD 207897 does not have an entry in the catalogue of orbital obliquity measurements.

 

HD 207897 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)