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 0.1813
( 4.351 )
day
hour
Transit depth 0.4 %
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 ± 100 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.0 dex
Stellar mass 2.20 ± 0.34   Msun
Stellar radius 2.33 +0.12 −0.21 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   0.0497 ± 0.0026  AU
Planetary mass 2.13 ± 0.28
( 677 ± 89 )
Mjup
Mearth
Planetary radius 1.374 ± 0.082
( 15.40 ± 0.92 )
Rjup
Rearth
Planetary surface gravity 25.9 +2.5 −2.3
3.41 +0.04 −0.04
m/s2
log(cgs)
Planetary mean density 0.83 ± 0.10
( 1.10 ± 0.13 )
ρjup
g cm-3
Planetary equilibrium temperature 2641 ± 34 K
Reference of detailed study arXiv:1809.04897  

 

Entries in the catalogue of orbital obliquity measurements:
 
Reference λ (degrees)
Anderson et al. (2018)   89.3   ±   1.4  

 

 

WASP-189 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)