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 2018MNRAS.481.5091H  
Date of discovery paper 2018 / 7 / 20 y / m / d
Data/telescope used for discovery WASP  
Right ascension 11 31 26.10 h m s
Declination −41 41 22.3 d m s
Right ascension (decimal) 172.85875 degrees
Declination (decimal) -41.68953 degrees
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   2456720.68318 ± 0.00021     HJD or BJD
Orbital period 2.20883665 ± 0.00000045 days
Reference for orbital ephemeris   2018MNRAS.481.5091H  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 6081 ± 78 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.12 ± 0.09 dex
Stellar mass 1.21 ± 0.05   Msun
Stellar radius 1.18 ± 0.02 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 39.3 ± 1.0
( 124931 ± 3179 )
Mjup
Mearth
Planetary radius 0.96 ± 0.02
( 10.76 ± 0.22 )
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 2023MNRAS.519.5177C  

 

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

 


Page generated on 2024/07/19           John Southworth   (Keele University, UK)