TEPCat: LP 890-9c


 

This page summarises the information held within TEPCat for the transiting planetary system LP 890-9c. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper arXiv:2209.02831  
Date of discovery paper 2022 / 9 / 8 y / m / d
Data/telescope used for discovery TESS  
Right ascension 04 16 31.16 h m s
Declination −28 18 53.0 d m s
Right ascension (decimal) 64.12983 degrees
Declination (decimal) -28.31472 degrees
V-band apparent magnitude 18.0 mag
K-band apparent magnitude 11.34 mag
Transit duration 0.0400
( 0.960 )
day
hour
Transit depth 0.7 %
Time of mid-transit   2459520.70598 ± 0.00031     HJD or BJD
Orbital period 8.457463 ± 0.000024 days
Reference for orbital ephemeris   arXiv:2209.02831  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 2850 ± 75 K
Stellar metal abundance ([Fe/H] or [M/H])   −0.028 ± 0.089 dex
Stellar mass 0.118 ± 0.002   Msun
Stellar radius 0.1556 ± 0.0086 Rsun
Stellar logarithmic surface gravity 5.126 +0.050 −0.047 c.g.s.
Stellar mean density 31.3 +5.9 −4.7
( 44.2 + 8.3 − 6.6 )
ρsun
g cm-3
Orbital eccentricity 0.0  
Orbital semimajor axis   0.03984 ± 0.00022  AU
Planetary mass 0.0 +0.080 −0.0
( 0 +25 −0 )
Mjup
Mearth
Planetary radius 0.1220 +0.0049 −0.0035
( 1.367 +0.055 −0.039 )
Rjup
Rearth
Planetary surface gravity m/s2
log(cgs)
Planetary mean density ρjup
g cm-3
Planetary equilibrium temperature 272 ± 2 K
Reference of detailed study arXiv:2209.02831  

 

LP 890-9c does not have an entry in the catalogue of orbital obliquity measurements.

 

LP 890-9c has not been analysed as part of the Homogeneous Studies of Transiting Extrasolar Planets project.

 


Page generated on 2022/12/01           John Southworth   (Keele University, UK)