TEPCat: WASP-38


 

This page summarises the information held within TEPCat for the transiting planetary system WASP-38. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2011A+A...525A..54B  
Date of discovery paper 2010 / 10 / 6 y / m / d
Right ascension 16 15 50.36 h m s
Declination +10 01 57.3 d m s
V-band apparent magnitude 9.45 mag
K-band apparent magnitude 8.00 mag
Transit duration 0.1942
( 4.661 )
day
hour
Transit depth 0.8 %
Time of mid-transit   2455335.92050 ± 0.00074     HJD or BJD
Orbital period 6.871815 ± 0.000044 days
Reference for orbital ephemeris   2011A+A...525A..54B  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 6150 ± 80 K
Stellar metal abundance ([Fe/H] or [M/H])   −0.12 ± 0.07 dex
Stellar mass 1.203 ± 0.036   Msun
Stellar radius 1.331 +0.030 −0.025 Rsun
Stellar logarithmic surface gravity 4.250 +0.012 −0.013 c.g.s.
Stellar mean density 0.509 ± 0.023
( 0.718 ± 0.032 )
ρsun
g cm-3
Orbital eccentricity 0.0314 +0.0046 −0.0041  
Orbital semimajor axis   0.07522 +0.00074 −0.00075  AU
Planetary mass 2.691 ± 0.058
( 855 ± 18 )
Mjup
Mearth
Planetary radius 1.094 +0.029 −0.028
( 12.26 + 0.33 − 0.31 )
Rjup
Rearth
Planetary surface gravity m/s2
log(cgs)
Planetary mean density 2.06 ± 0.14
( 2.73 ± 0.19 )
ρjup
g cm-3
Planetary equilibrium temperature 1292 ± 33 K
Reference of detailed study 2011A+A...525A..54B  

 

Entries in the catalogue of Rossiter-McLaughlin measurements:
 
Reference λ (degrees)
Simpson et al. (2011)   15   + 33   - 43  
Brown et al. (2012)   7.5   + 4.7   - 6.1  

 

 

WASP-38 has not been analysed as part of the Homogeneous Studies of Transiting Extrasolar Planets project.

 


Page generated on 2017/12/13           John Southworth   (Keele University, UK)