TEPCat: WASP-157


 

This page summarises the information held within TEPCat for the transiting planetary system WASP-157. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2016PASP..128l4403M  
Date of discovery paper 2016 / 3 / 18 y / m / d
Right ascension 13 26 37.25 h m s
Declination −08 19 03.2 d m s
V-band apparent magnitude 12.91 mag
K-band apparent magnitude 10.76 mag
Transit duration 0.0811
( 1.946 )
day
hour
Transit depth 0.7 %
Time of mid-transit   2457257.803194 ± 0.000088     HJD or BJD
Orbital period 3.9516205 ± 0.0000040 days
Reference for orbital ephemeris   2016PASP..128l4403M  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 5840 ± 140 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.34 ± 0.09 dex
Stellar mass 1.26 ± 0.12   Msun
Stellar radius 1.134 ± 0.051 Rsun
Stellar logarithmic surface gravity 4.5 ± 0.2 c.g.s.
Stellar mean density 0.86 ± 0.14
( 1.21 ± 0.20 )
ρsun
g cm-3
Orbital eccentricity 0.0 +0.11 −0.0  
Orbital semimajor axis   0.0529 ± 0.0017  AU
Planetary mass 0.574 ± 0.093
( 182 ± 29 )
Mjup
Mearth
Planetary radius 1.065 ± 0.047
( 11.94 ± 0.53 )
Rjup
Rearth
Planetary surface gravity m/s2
log(cgs)
Planetary mean density 0.48 ± 0.10
( 0.64 ± 0.13 )
ρjup
g cm-3
Planetary equilibrium temperature 1339 ± 93 K
Reference of detailed study 2016PASP..128l4403M  

 

WASP-157 does not have an entry in the catalogue of Rossiter-McLaughlin measurements.

 

WASP-157 has not been analysed as part of the Homogeneous Studies of Transiting Extrasolar Planets project.

 


Page generated on 2017/12/15           John Southworth   (Keele University, UK)