TEPCat: WASP-23


 

This page summarises the information held within TEPCat for the transiting planetary system WASP-23. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2011A+A...531A..24T  
Date of discovery paper 2011 / 3 / 15 y / m / d
Right ascension 06 44 30.59 h m s
Declination −42 45 42.5 d m s
V-band apparent magnitude 12.68 mag
K-band apparent magnitude 10.45 mag
Transit duration 0.0998
( 2.395 )
day
hour
Transit depth 1.7 %
Time of mid-transit   2454813.68159 ± 0.00042     HJD or BJD
Orbital period 2.9444300 ± 0.0000011 days
Reference for orbital ephemeris   2013A+A...553A..26N  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 5046 ± 99 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.05 ± 0.06 dex
Stellar mass 0.842 +0.051 −0.049   Msun
Stellar radius 0.819 +0.033 −0.028 Rsun
Stellar logarithmic surface gravity 4.531 +0.025 −0.029 c.g.s.
Stellar mean density 1.497 +0.033 −0.031
( 2.112 +0.047 −0.044 )
ρsun
g cm-3
Orbital eccentricity 0.0  
Orbital semimajor axis   0.03798 ± 0.00075  AU
Planetary mass 0.917 +0.040 −0.039
( 291 +12 −12 )
Mjup
Mearth
Planetary radius 1.067 +0.045 −0.038
( 11.96 + 0.50 − 0.43 )
Rjup
Rearth
Planetary surface gravity 19.7 +1.3 −1.4
3.29 +0.03 −0.03
m/s2
log(cgs)
Planetary mean density 0.691 +0.072 −0.077
( 0.917 +0.096 −0.102 )
ρjup
g cm-3
Planetary equilibrium temperature 1152 +28 −26 K
Reference of detailed study 2013A+A...553A..26N  

 

Entries in the catalogue of Rossiter-McLaughlin measurements:
 
Reference λ (degrees)
Triaud et al. (2011) prograde

 

 

WASP-23 has not been analysed as part of the Homogeneous Studies of Transiting Extrasolar Planets project.

 


Page generated on 2017/12/05           John Southworth   (Keele University, UK)