TEPCat: WASP-12


 

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

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2009ApJ...693.1920H  
Date of discovery paper 2008 / 12 / 17 y / m / d
Right ascension 06 30 32.79 h m s
Declination +29 40 20.4 d m s
V-band apparent magnitude 11.69 mag
K-band apparent magnitude 10.19 mag
Transit duration 0.12483
( 2.9959 )
day
hour
Transit depth 1.6 %
Time of mid-transit   2456305.455609 ± 0.000028     HJD or BJD
Orbital period 1.091420025 ± 0.000000047 days
Reference for orbital ephemeris   2017AJ....154....4P  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 6313 ± 52 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.21 ± 0.04 dex
Stellar mass 1.434 +0.11 −0.090   Msun
Stellar radius 1.657 +0.046 −0.044 Rsun
Stellar logarithmic surface gravity 4.157 +0.013 −0.012 c.g.s.
Stellar mean density 0.316 +0.011 −0.010
( 0.446 +0.016 −0.014 )
ρsun
g cm-3
Orbital eccentricity 0.0  
Orbital semimajor axis   0.02340 +0.00056 −0.00050  AU
Planetary mass 1.470 +0.076 −0.069
( 467 +24 −21 )
Mjup
Mearth
Planetary radius 1.900 +0.057 −0.045
( 21.30 + 0.64 − 0.50 )
Rjup
Rearth
Planetary surface gravity 10.09 +0.35 −0.34
3.00 +0.01 −0.01
m/s2
log(cgs)
Planetary mean density 0.201 ± 0.011
( 0.267 ± 0.015 )
ρjup
g cm-3
Planetary equilibrium temperature 2580 +58 −62 K
Reference of detailed study 2017AJ....153...78C  

 

Entries in the catalogue of Rossiter-McLaughlin measurements:
 
Reference λ (degrees)
Albrecht et al. (2012)   59   + 15   - 20  

 

 

WASP-12 has not been analysed as part of the Homogeneous Studies of Transiting Extrasolar Planets project.

 


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