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 arXiv:1904.12818  
Date of discovery paper 2019 / 4 / 30 y / m / d
Right ascension 09 36 01.64 h m s
Declination −21 39 38.9 d m s
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   2458517.99912 ± 0.00052     HJD or BJD
Orbital period 3.93056 ± 0.00009 days
Reference for orbital ephemeris   arXiv:1904.12818  

 

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   0.034 ± 0.002  AU
Planetary mass 0.0051 ± 0.0009
( 1.62 ± 0.29 )
Mjup
Mearth
Planetary radius 0.1040 +0.0058 −0.0057
( 1.166 +0.065 −0.064 )
Rjup
Rearth
Planetary surface gravity 11.7 +2.6 −2.3
3.07 +0.09 −0.10
m/s2
log(cgs)
Planetary mean density 4.5 +1.1 −0.9
( 6.0 +1.5 −1.2 )
ρjup
g cm-3
Planetary equilibrium temperature 531 +12 −11 K
Reference of detailed study arXiv:1904.12818  

 

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

 

GJ 357 has not been analysed as part of the Homogeneous Studies of Transiting Extrasolar Planets project.

 


Page generated on 2019/07/16           John Southworth   (Keele University, UK)