TEPCat: WASP-8


 

This page summarises the information held within TEPCat for the transiting planetary system WASP-8. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2010A+A...517L...1Q  
Date of discovery paper 2010 / 6 / 26 y / m / d
Right ascension 23 59 36.07 h m s
Declination −35 01 52.9 d m s
V-band apparent magnitude 9.77 mag
K-band apparent magnitude 8.09 mag
Transit duration 0.1832
( 4.397 )
day
hour
Transit depth 1.3 %
Time of mid-transit   2454679.33741 ± 0.00047     HJD or BJD
Orbital period 8.15875416 ± 0.00000016 days
Reference for orbital ephemeris   2010A+A...517L...1Q  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 5600 ± 80 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.17 ± 0.07 dex
Stellar mass 1.030 +0.054 −0.061   Msun
Stellar radius 0.945 +0.051 −0.036 Rsun
Stellar logarithmic surface gravity 4.5 ± 0.1 c.g.s.
Stellar mean density 1.22 +0.17 −0.15
( 1.72 +0.24 −0.21 )
ρsun
g cm-3
Orbital eccentricity 0.3100 +0.0029 −0.0024  
Orbital semimajor axis   0.0801 +0.0014 −0.0016  AU
Planetary mass 2.25 ± 0.08
( 715 ± 25 )
Mjup
Mearth
Planetary radius 1.038 +0.007 −0.047
( 11.635 + 0.078 − 0.527 )
Rjup
Rearth
Planetary surface gravity m/s2
log(cgs)
Planetary mean density ρjup
g cm-3
Planetary equilibrium temperature K
Reference of detailed study 2010A+A...517L...1Q  

 

Entries in the catalogue of Rossiter-McLaughlin measurements:
 
Reference λ (degrees)
Queloz et al. (2010)   −123.3   + 3.4   - 4.4  
Bourrier et al. (2017)   −143.0   + 1.6   - 1.5  

 

 

WASP-8 has not been analysed as part of the Homogeneous Studies of Transiting Extrasolar Planets project.

 


Page generated on 2017/12/15           John Southworth   (Keele University, UK)