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	2455507.5222 ± 0.0003	HJD or BJD
Orbital period	1.2198675 ± 0.0000011	days
Reference for orbital ephemeris	2014A+A...561A..48V

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 2017/08/07 John Southworth (Keele University, UK)