TEPCat: WASP-98


 

This page summarises the information held within TEPCat for the transiting planetary system WASP-98. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2014MNRAS.440.1982H  
Date of discovery paper 2013 / 10 / 22 y / m / d
Right ascension 03 53 42.90 h m s
Declination −34 19 41.7 d m s
V-band apparent magnitude 12.98 mag
K-band apparent magnitude 11.28 mag
Transit duration 0.0795
( 1.908 )
day
hour
Transit depth 2.6 %
Time of mid-transit   2456333.392075 ± 0.000082     HJD or BJD
Orbital period 2.96264036 ± 0.00000043 days
Reference for orbital ephemeris   2016MNRAS.461.1053M  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 5473 ± 121 K
Stellar metal abundance ([Fe/H] or [M/H])   −0.49 ± 0.10 dex
Stellar mass 0.809 ± 0.064   Msun
Stellar radius 0.741 ± 0.021 Rsun
Stellar logarithmic surface gravity 4.606 ± 0.013 c.g.s.
Stellar mean density 1.987 ± 0.046
( 2.804 ± 0.065 )
ρsun
g cm-3
Orbital eccentricity 0.0 +0.24 −0.0  
Orbital semimajor axis   0.03762 ± 0.00099  AU
Planetary mass 0.922 ± 0.080
( 293 ± 25 )
Mjup
Mearth
Planetary radius 1.144 ± 0.034
( 12.82 ± 0.38 )
Rjup
Rearth
Planetary surface gravity 17.5 ± 1.2
3.24 ± 0.03
m/s2
log(cgs)
Planetary mean density 0.576 ± 0.046
( 0.764 ± 0.061 )
ρjup
g cm-3
Planetary equilibrium temperature 1171 ± 26 K
Reference of detailed study 2016MNRAS.461.1053M  

 

WASP-98 does not have an entry in the catalogue of Rossiter-McLaughlin measurements.

 

WASP-98 has not been analysed as part of the Homogeneous Studies of Transiting Extrasolar Planets project.

 


Page generated on 2017/12/15           John Southworth   (Keele University, UK)