TEPCat: GJ 1252


 

This page summarises the information held within TEPCat for the transiting planetary system GJ 1252. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper arXiv:1912.05556  
Date of discovery paper 2019 / 12 / 12 y / m / d
Data/telescope used for discovery TESS  
Right ascension 20 27 42.08 h m s
Declination −56 27 25.2 d m s
Right ascension (decimal) 306.92533 degrees
Declination (decimal) -56.45700 degrees
V-band apparent magnitude 12.19 mag
K-band apparent magnitude 7.92 mag
Transit duration 0.0302
( 0.725 )
day
hour
Transit depth 0.08 %
Time of mid-transit   2458668.09748 ± 0.00032     HJD or BJD
Orbital period 0.51824160 ± 0.00000069 days
Reference for orbital ephemeris   arXiv:2208.09479  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 3458 +140 −133 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.1 ± 0.1 dex
Stellar mass 0.381 ± 0.019   Msun
Stellar radius 0.391 ± 0.020 Rsun
Stellar logarithmic surface gravity c.g.s.
Stellar mean density ρsun
g cm-3
Orbital eccentricity 0.0  
Orbital semimajor axis   0.00916 ± 0.00076  AU
Planetary mass 0.0042 ± 0.0009
( 1.34 ± 0.29 )
Mjup
Mearth
Planetary radius 0.1053 ± 0.0070
( 1.180 ± 0.078 )
Rjup
Rearth
Planetary surface gravity m/s2
log(cgs)
Planetary mean density ρjup
g cm-3
Planetary equilibrium temperature 997 +53 −49 K
Reference of detailed study arXiv:2208.09479  

 

GJ 1252 does not have an entry in the catalogue of orbital obliquity measurements.

 

GJ 1252 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)