TEPCat: WASP-57


 

This page summarises the information held within TEPCat for the transiting planetary system WASP-57. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2013A+A...551A..73F  
Date of discovery paper 2012 / 10 / 9 y / m / d
Right ascension 14 55 16.84 h m s
Declination −02 03 27.5 d m s
V-band apparent magnitude 13.04 mag
K-band apparent magnitude 11.24 mag
Transit duration 0.0960
( 2.304 )
day
hour
Transit depth 1.8 %
Time of mid-transit   2456058.54910 ± 0.00016     HJD or BJD
Orbital period 2.83891856 ± 0.00000081 days
Reference for orbital ephemeris   2015MNRAS.454.3094S  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 5600 ± 100 K
Stellar metal abundance ([Fe/H] or [M/H])   −0.25 ± 0.10 dex
Stellar mass 0.886 ± 0.067   Msun
Stellar radius 0.927 ± 0.033 Rsun
Stellar logarithmic surface gravity 4.452 ± 0.025 c.g.s.
Stellar mean density 1.113 ± 0.085
( 1.57 ± 0.12 )
ρsun
g cm-3
Orbital eccentricity 0.0  
Orbital semimajor axis   0.03769 ± 0.00097  AU
Planetary mass 0.644 ± 0.062
( 204 ± 19 )
Mjup
Mearth
Planetary radius 1.050 ± 0.053
( 11.77 ± 0.59 )
Rjup
Rearth
Planetary surface gravity 14.5 ± 1.5
3.16 ± 0.04
m/s2
log(cgs)
Planetary mean density 0.521 ± 0.072
( 0.691 ± 0.096 )
ρjup
g cm-3
Planetary equilibrium temperature 1338 ± 29 K
Reference of detailed study 2015MNRAS.454.3094S  

 

WASP-57 does not have an entry in the catalogue of Rossiter-McLaughlin measurements.

 

WASP-57 has not been analysed as part of the Homogeneous Studies of Transiting Extrasolar Planets project.

 


Page generated on 2017/12/11           John Southworth   (Keele University, UK)