TEPCat: GJ 357


 

This page summarises the information held within TEPCat for the transiting planetary system GJ 357. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2019A+A...628A..39L  
Date of discovery paper 2019 / 4 / 30 y / m / d
Data/telescope used for discovery TESS  
Right ascension 09 36 01.64 h m s
Declination −21 39 38.9 d m s
Right ascension (decimal) 144.00683 degrees
Declination (decimal) -21.66081 degrees
V-band apparent magnitude 10.91 mag
K-band apparent magnitude 6.48 mag
Transit duration 0.053
( 1.27 )
day
hour
Transit depth 0.1 %
Time of mid-transit   2458517.9994 ± 0.0001     HJD or BJD
Orbital period 3.93086 ± 0.00004 days
Reference for orbital ephemeris   2019MNRAS.490.5585J  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 3505 ± 51 K
Stellar metal abundance ([Fe/H] or [M/H])   −0.12 ± 0.16 dex
Stellar mass 0.342 ± 0.011   Msun
Stellar radius 0.337 ± 0.015 Rsun
Stellar logarithmic surface gravity 4.94 ± 0.07 c.g.s.
Stellar mean density 9.2 ± 1.1
( 13.0 ± 1.6 )
ρsun
g cm-3
Orbital eccentricity 0.0  
Orbital semimajor axis   0.033 ± 0.001  AU
Planetary mass 0.0066 ± 0.0010
( 2.10 ± 0.32 )
Mjup
Mearth
Planetary radius 0.1041 +0.0033 −0.0032
( 1.167 +0.037 −0.036 )
Rjup
Rearth
Planetary surface gravity 11.7 +2.6 −2.3
3.07 +0.09 −0.10
m/s2
log(cgs)
Planetary mean density 1.81 +0.34 −0.31
( 2.40 +0.45 −0.41 )
ρjup
g cm-3
Planetary equilibrium temperature 531 +12 −11 K
Reference of detailed study 2019MNRAS.490.5585J  

 

GJ 357 does not have an entry in the catalogue of orbital obliquity measurements.

 


Page generated on 2024/04/19           John Southworth   (Keele University, UK)