TEPCat: HAT-P-12


 

This page summarises the information held within TEPCat for the transiting planetary system HAT-P-12. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2009ApJ...706..785H  
Date of discovery paper 2009 / 4 / 29 y / m / d
Right ascension 13 57 33.47 h m s
Declination +43 29 36.8 d m s
V-band apparent magnitude 12.8 mag
K-band apparent magnitude 10.11 mag
Transit duration 0.0974
( 2.338 )
day
hour
Transit depth 2.0 %
Time of mid-transit   2456032.151332 ± 0.000039     HJD or BJD
Orbital period 3.21305756 ± 0.00000020 days
Reference for orbital ephemeris   2015A+A...583A.138M  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 4650 ± 60 K
Stellar metal abundance ([Fe/H] or [M/H])   −0.29 ± 0.05 dex
Stellar mass 0.727 ± 0.019   Msun
Stellar radius 0.702 ± 0.013 Rsun
Stellar logarithmic surface gravity 4.607 ± 0.020 c.g.s.
Stellar mean density 2.100 ± 0.089
( 2.96 ± 0.13 )
ρsun
g cm-3
Orbital eccentricity 0.0  
Orbital semimajor axis   0.03829 ± 0.00035  AU
Planetary mass 0.210 ± 0.012
( 66.8 ± 3.8 )
Mjup
Mearth
Planetary radius 0.936 ± 0.012
( 10.49 ± 0.13 )
Rjup
Rearth
Planetary surface gravity 6.37 ± 0.30
2.80 ± 0.02
m/s2
log(cgs)
Planetary mean density 0.240 ± 0.012
( 0.318 ± 0.016 )
ρjup
g cm-3
Planetary equilibrium temperature 960 ± 14 K
Reference of detailed study 2012AJ....143...95L  

 

HAT-P-12 does not have an entry in the catalogue of Rossiter-McLaughlin measurements.

 

HAT-P-12 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)