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 0.2003
( 4.807 )
day
hour
Transit depth 0.6 %
Time of mid-transit   2459005.51241 ± 0.00008     HJD or BJD
Orbital period 6.87187 ± 0.00003 days
Reference for orbital ephemeris   arXiv:2106.11331  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 6436 ± 60 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.06 ± 0.04 dex
Stellar mass 1.28 ± 0.05   Msun
Stellar radius 1.35 ± 0.03 Rsun
Stellar logarithmic surface gravity 4.80 ± 0.07 c.g.s.
Stellar mean density 0.37 ± 0.03
( 0.522 ± 0.042 )
ρsun
g cm-3
Orbital eccentricity 0.0314 +0.0046 −0.0041  
Orbital semimajor axis   0.07522 +0.00074 −0.00075  AU
Planetary mass 2.70 ± 0.10
( 858 ± 31 )
Mjup
Mearth
Planetary radius 1.07 ± 0.02
( 11.99 ± 0.22 )
Rjup
Rearth
Planetary surface gravity m/s2
log(cgs)
Planetary mean density 1.7 ± 0.08
( 2.26 ± 0.11 )
ρjup
g cm-3
Planetary equilibrium temperature 1292 ± 33 K
Reference of detailed study arXiv:2106.11331  

 

Entries in the catalogue of orbital obliquity 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 2021/12/02           John Southworth   (Keele University, UK)