TEPCat: WASP-28


 

This page summarises the information held within TEPCat for the transiting planetary system WASP-28. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2015A+A...575A..61A  
Date of discovery paper 2014 / 2 / 7 y / m / d
Right ascension 23 34 27.87 h m s
Declination −01 34 48.1 d m s
V-band apparent magnitude 12.15 mag
K-band apparent magnitude 10.73 mag
Transit duration 0.13495
( 3.2388 )
day
hour
Transit depth 1.1 %
Time of mid-transit   2457642.502126 ± 0.000014     HJD or BJD
Orbital period 3.40883495 ± 0.00000015 days
Reference for orbital ephemeris   arXiv:1710.08892  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 6084 ± 45 K
Stellar metal abundance ([Fe/H] or [M/H])   −0.20 ± 0.07 dex
Stellar mass 0.993 ± 0.067   Msun
Stellar radius 1.083 ± 0.025 Rsun
Stellar logarithmic surface gravity 4.370 ± 0.018 c.g.s.
Stellar mean density 0.7815 ± 0.0068
( 1.1027 ± 0.0096 )
ρsun
g cm-3
Orbital eccentricity 0.0 +0.075 −0.0  
Orbital semimajor axis   0.0442 ± 0.0010  AU
Planetary mass 0.889 ± 0.058
( 282 ± 18 )
Mjup
Mearth
Planetary radius 1.219 ± 0.028
( 13.66 ± 0.31 )
Rjup
Rearth
Planetary surface gravity 14.09 ± 0.91
3.15 ± 0.03
m/s2
log(cgs)
Planetary mean density 0.491 ± 0.027
( 0.651 ± 0.036 )
ρjup
g cm-3
Planetary equilibrium temperature 1456 ± 40 K
Reference of detailed study arXiv:1710.08892  

 

Entries in the catalogue of Rossiter-McLaughlin measurements:
 
Reference λ (degrees)
Anderson et al. (2015)   8   ±   18  
Mocnik et al. (2017)   6   ±   17  

 

 

WASP-28 has not been analysed as part of the Homogeneous Studies of Transiting Extrasolar Planets project.

 


Page generated on 2017/12/05           John Southworth   (Keele University, UK)