TEPCat: WASP-128


 

This page summarises the information held within TEPCat for the transiting brown dwarf system WASP-128. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper arXiv:1807.07557  
Date of discovery paper 2018 / 7 / 20 y / m / d
Right ascension 11 31 26.10 h m s
Declination −41 41 22.3 d m s
V-band apparent magnitude 12.37 mag
K-band apparent magnitude 10.94 mag
Transit duration 0.1129
( 2.710 )
day
hour
Transit depth 0.8 %
Time of mid-transit   2456720.68369 ± 0.00019     HJD or BJD
Orbital period 2.2088524 ± 0.0000021 days
Reference for orbital ephemeris   arXiv:1807.07557  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 5950 ± 50 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.01 ± 0.12 dex
Stellar mass 1.15 ± 0.039   Msun
Stellar radius 1.152 +0.021 −0.016 Rsun
Stellar logarithmic surface gravity 4.396 +0.008 −0.014 c.g.s.
Stellar mean density 0.807 +0.016 −0.038
( 1.139 +0.023 −0.054 )
ρsun
g cm-3
Orbital eccentricity 0.0 +0.007 −0.0  
Orbital semimajor axis   0.03590 +0.00038 −0.00040  AU
Planetary mass 37.19 +0.83 −0.85
( 118223 +2638 −2702 )
Mjup
Mearth
Planetary radius 0.937 +0.022 −0.018
( 10.50 + 0.25 − 0.20 )
Rjup
Rearth
Planetary surface gravity 1096 +33 −44
5.04 +0.01 −0.02
m/s2
log(cgs)
Planetary mean density 41.0 +1.9 −2.6
( 54.4 + 2.5 − 3.4 )
ρjup
g cm-3
Planetary equilibrium temperature K
Reference of detailed study arXiv:1807.07557  

 

WASP-128 does not have an entry in the catalogue of orbital obliquity measurements.

 

WASP-128 has not been analysed as part of the Homogeneous Studies of Transiting Extrasolar Planets project.

 


Page generated on 2019/07/16           John Southworth   (Keele University, UK)