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
Data/telescope used for discovery WASP  
Right ascension 06 30 32.79 h m s
Declination +29 40 20.4 d m s
Right ascension (decimal) 97.63663 degrees
Declination (decimal) 29.67233 degrees
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   2454508.978942 ± 0.000047     HJD or BJD
Orbital period 1.091419487 ± 0.000000020 days
Reference for orbital ephemeris   2022AJ....164..220H  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 6265 ± 50 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.12 ± 0.07 dex
Stellar mass 1.325 +0.026 −0.018   Msun
Stellar radius 1.690 +0.019 −0.018 Rsun
Stellar logarithmic surface gravity 4.11 ± 0.11 c.g.s.
Stellar mean density 0.274 ± 0.010
( 0.387 ± 0.014 )
ρsun
g cm-3
Orbital eccentricity 0.0 +0.053 −0.0  
Orbital semimajor axis   0.0234 ± 0.0010  AU
Planetary mass 1.470 +0.076 −0.069
( 467 +24 −21 )
Mjup
Mearth
Planetary radius 1.965 +0.088 −0.087
( 22.03 + 0.99 − 0.98 )
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 arXiv:2402.12120  

 

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

 

 


Page generated on 2024/03/28           John Southworth   (Keele University, UK)