TEPCat: WASP-3


 

This page summarises the information held within TEPCat for the transiting planetary system WASP-3. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2008MNRAS.385.1576P  
Date of discovery paper 2007 / 10 / 26 y / m / d
Right ascension 18 34 31.62 h m s
Declination +35 39 41.5 d m s
V-band apparent magnitude 10.64 mag
K-band apparent magnitude 9.36 mag
Transit duration 0.1162
( 2.789 )
day
hour
Transit depth 1.3 %
Time of mid-transit   2454143.85112 ± 0.00024     HJD or BJD
Orbital period 1.8468351 ± 0.0000004 days
Reference for orbital ephemeris   2013AJ....146..147M  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 6340 ± 90 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.161 ± 0.063 dex
Stellar mass 1.11 +0.08 −0.06   Msun
Stellar radius 1.298 +0.053 −0.044 Rsun
Stellar logarithmic surface gravity 4.26 ± 0.04 c.g.s.
Stellar mean density 0.506 +0.026 −0.025
( 0.714 +0.037 −0.035 )
ρsun
g cm-3
Orbital eccentricity 0.0  
Orbital semimajor axis   0.0305 +0.0008 −0.0006  AU
Planetary mass 1.77 +0.11 −0.09
( 562 +34 −28 )
Mjup
Mearth
Planetary radius 1.346 ± 0.063
( 15.09 ± 0.71 )
Rjup
Rearth
Planetary surface gravity 24 ± 2
3.38 ± 0.03
m/s2
log(cgs)
Planetary mean density 0.73 +0.15 −0.14
( 0.97 +0.20 −0.19 )
ρjup
g cm-3
Planetary equilibrium temperature 2020 ± 35 K
Reference of detailed study 2013AJ....146..147M  

 

Entries in the catalogue of Rossiter-McLaughlin measurements:
 
Reference λ (degrees)
Simpson et al. (2010)   15   + 10   - 9  
Tripathi et al. (2010)   3.3   + 2.5   - 4.4  
Miller et al. (2010)   5   + 6   - 5  
Oshagh et al. (2013)   20.0   ±   3.3  

 

 

WASP-3 has been examined as part of the Homogeneous Studies of Transiting Extrasolar Planets project. The details from this work have been given below. In most instances they are the same as the physical properties given above, but in some cases the Homogeneous Studies results given below have been superseded by newer analyses. Separate statistical and systematic errorbars are given where relevant.

Measured parameters Value Unit
Orbital velocity amplitude 286.5 ± 7.8 m/s
Stellar effective temperature 6400 ± 100 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.00 ± 0.20 dex
Orbital inclination 83.72 ± 0.39   degrees
Fractional stellar radius (R* / a) 0.1994 ± 0.0032  
Fractional planetary radius (Rpl / a)   0.02125 ± 0.00041   
Light curve analysis reference 2011MNRAS.417.2166S  
 
Derived parameters Value Unit
Stellar mass 1.26 ± 0.10 ± 0.02 Msun
Stellar radius 1.366 ± 0.044 ± 0.008 Rsun
Stellar logarithmic surface gravity 4.268 ± 0.018 ± 0.003 c.g.s.
Stellar mean density 0.495 ± 0.024 ρsun
Orbital semimajor axis   0.03185 ± 0.00086 ± 0.00020  AU
Planetary mass 2.03 ± 0.12 ± 0.03 Mjup
Planetary radius 1.416 ± 0.047 ± 0.009 Rjup
Planetary surface gravity 25.1 ± 1.2 m/s2
Planetary mean density 0.669 ± 0.047 ± 0.004 ρjup
Planetary equilibrium temperature 2020 ± 35 K
Safronov number 0.0724 ± 0.0031 ± 0.0004  
Main analysis reference 2011MNRAS.417.2166S  

 


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