TEPCat: WASP-33


 

This page summarises the information held within TEPCat for the transiting planetary system WASP-33. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2010MNRAS.407..507C  
Date of discovery paper 2010 / 4 / 26 y / m / d
Right ascension 02 26 51.06 h m s
Declination +37 33 01.7 d m s
V-band apparent magnitude 8.18 mag
K-band apparent magnitude 7.47 mag
Transit duration 0.11880
( 2.8512 )
day
hour
Transit depth 1.4 %
Time of mid-transit   2454163.22367 ± 0.00022     HJD or BJD
Orbital period 1.21987089 ± 0.00000015 days
Reference for orbital ephemeris   arXiv:1710.07642  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 7430 ± 100 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.1 ± 0.2 dex
Stellar mass 1.561 +0.045 −0.079   Msun
Stellar radius 1.509 +0.019 −0.030 Rsun
Stellar logarithmic surface gravity 4.27 ± 0.01 c.g.s.
Stellar mean density 0.478 ± 0.008
( 0.674 ± 0.011 )
ρsun
g cm-3
Orbital eccentricity 0.0  
Orbital semimajor axis   0.0259 +0.0002 −0.0005  AU
Planetary mass 2.16 ± 0.20
( 686 ± 63 )
Mjup
Mearth
Planetary radius 1.679 +0.019 −0.030
( 18.82 + 0.21 − 0.34 )
Rjup
Rearth
Planetary surface gravity 19 ± 2
3.28 ± 0.04
m/s2
log(cgs)
Planetary mean density 0.48 ± 0.07
( 0.637 ± 0.093 )
ρjup
g cm-3
Planetary equilibrium temperature 2710 ± 50 K
Reference of detailed study 2015A+A...578L...4L  

 

Entries in the catalogue of Rossiter-McLaughlin measurements:
 
Reference λ (degrees)
Collier Cameron et al. (2010)   252   ±   2  
Johnson et al. (2015) 2008 data   −110.06   + 0.40   - 0.27  
Johnson et al. (2015) 2014 data   −112.93   + 0.23   - 0.22  
Iorio (2016) 2008 data   −999   ±   -999  
Iorio (2016) 2014 data   −999   ±   -999  

 

 

WASP-33 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)