TEPCat: HAT-P-23


 

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

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2011ApJ...742..116B  
Date of discovery paper 2010 / 8 / 23 y / m / d
Right ascension 20 24 29.99 h m s
Declination +16 45 43.7 d m s
V-band apparent magnitude 12.43 mag
K-band apparent magnitude 10.79 mag
Transit duration 0.0908
( 2.179 )
day
hour
Transit depth 1.8 %
Time of mid-transit   2454852.26599 ± 0.00020     HJD or BJD
Orbital period 1.21288287 ± 0.00000017 days
Reference for orbital ephemeris   2015A+A...577A..54C  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 5885 ± 72 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.13 ± 0.08 dex
Stellar mass 1.104 ± 0.047   Msun
Stellar radius 1.089 ± 0.028 Rsun
Stellar logarithmic surface gravity 4.407 ± 0.018 c.g.s.
Stellar mean density 0.855 ± 0.051
( 1.206 ± 0.072 )
ρsun
g cm-3
Orbital eccentricity 0.0  
Orbital semimajor axis   0.02302 ± 0.00032  AU
Planetary mass 2.07 ± 0.12
( 658 ± 38 )
Mjup
Mearth
Planetary radius 1.224 ± 0.037
( 13.72 ± 0.41 )
Rjup
Rearth
Planetary surface gravity 34.3 ± 2.4
3.54 ± 0.03
m/s2
log(cgs)
Planetary mean density 1.057 ± 0.097
( 1.40 ± 0.13 )
ρjup
g cm-3
Planetary equilibrium temperature 1951 ± 30 K
Reference of detailed study 2015A+A...577A..54C  

 

Entries in the catalogue of Rossiter-McLaughlin measurements:
 
Reference λ (degrees)
Moutou et al. (2011)   15   ±   22  

 

 

HAT-P-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)