TEPCat: WASP-81


 

This page summarises the information held within TEPCat for the transiting planetary system WASP-81. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2017MNRAS.467.1714T  
Date of discovery paper 2016 / 12 / 14 y / m / d
Right ascension 20 16 49.89 h m s
Declination +03 17 38.7 d m s
V-band apparent magnitude 12.29 mag
K-band apparent magnitude 10.89 mag
Transit duration 0.14501
( 3.4802 )
day
hour
Transit depth 1.4 %
Time of mid-transit   2456195.57462 ± 0.00020     HJD or BJD
Orbital period 2.7164762 ± 0.0000023 days
Reference for orbital ephemeris   2017MNRAS.467.1714T  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 5890 ± 120 K
Stellar metal abundance ([Fe/H] or [M/H])   −0.36 ± 0.14 dex
Stellar mass 1.080 +0.059 −0.058   Msun
Stellar radius 1.283 +0.040 −0.037 Rsun
Stellar logarithmic surface gravity 4.258 +0.022 −0.027 c.g.s.
Stellar mean density 0.513 +0.030 −0.037
( 0.724 +0.042 −0.052 )
ρsun
g cm-3
Orbital eccentricity 0.0 +0.066 −0.0  
Orbital semimajor axis   0.03908 +0.00070 −0.00072  AU
Planetary mass 0.729 +0.036 −0.035
( 231 +11 −11 )
Mjup
Mearth
Planetary radius 1.429 +0.051 −0.046
( 16.02 + 0.57 − 0.52 )
Rjup
Rearth
Planetary surface gravity 9.27 +0.59 −0.62
2.97 +0.03 −0.03
m/s2
log(cgs)
Planetary mean density 0.250 ± 0.023
( 0.332 ± 0.031 )
ρjup
g cm-3
Planetary equilibrium temperature 1623 +38 −37 K
Reference of detailed study 2017MNRAS.467.1714T  

 

WASP-81 does not have an entry in the catalogue of Rossiter-McLaughlin measurements.

 

WASP-81 has not been analysed as part of the Homogeneous Studies of Transiting Extrasolar Planets project.

 


Page generated on 2017/12/12           John Southworth   (Keele University, UK)