TEPCat: WASP-189


 

This page summarises the information held within TEPCat for the transiting planetary system WASP-189. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper arXiv:1809.04897  
Date of discovery paper 2018 / 9 / 14 y / m / d
Right ascension 15 02 44.86 h m s
Declination −03 01 52.9 d m s
V-band apparent magnitude 6.64 mag
K-band apparent magnitude 6.06 mag
Transit duration 0.18057
( 4.3337 )
day
hour
Transit depth 0.6 %
Time of mid-transit   2456706.4545 ± 0.0018     HJD or BJD
Orbital period 2.7240330 ± 0.0000042 days
Reference for orbital ephemeris   arXiv:1809.04897  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 8000 ± 80 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.29 ± 0.13 dex
Stellar mass 2.030 ± 0.066   Msun
Stellar radius 2.36 ± 0.030 Rsun
Stellar logarithmic surface gravity 4.046 ± 0.024 c.g.s.
Stellar mean density 0.1748 ± 0.0037
( 0.2466 ± 0.0052 )
ρsun
g cm-3
Orbital eccentricity 0.0  
Orbital semimajor axis   0.05053 ± 0.00098  AU
Planetary mass 1.99 +0.16 −0.14
( 632 +50 −44 )
Mjup
Mearth
Planetary radius 1.619 ± 0.021
( 18.15 ± 0.24 )
Rjup
Rearth
Planetary surface gravity 18.8 +2.1 −1.8
3.27 +0.05 −0.04
m/s2
log(cgs)
Planetary mean density 0.469 +0.058 −0.028
( 0.622 +0.077 −0.037 )
ρjup
g cm-3
Planetary equilibrium temperature 2641 ± 34 K
Reference of detailed study arXiv:2009.13403  

 

Entries in the catalogue of orbital obliquity measurements:
 
Reference λ (degrees)
Anderson et al. (2018)   89.3   ±   1.4  
Lendl et al. (2020)   86.4   + 2.9   - 4.4  

 

 

WASP-189 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)