TEPCat: WASP-78


 

This page summarises the information held within TEPCat for the transiting planetary system WASP-78. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2012A+A...547A..61S  
Date of discovery paper 2012 / 6 / 7 y / m / d
Right ascension 04 15 01.51 h m s
Declination −22 06 59.1 d m s
V-band apparent magnitude 11.96 mag
K-band apparent magnitude 11.01 mag
Transit duration 0.1953
( 4.687 )
day
hour
Transit depth 0.7 %
Time of mid-transit   2455882.35878 ± 0.00053     HJD or BJD
Orbital period 2.17517632 ± 0.00000047 days
Reference for orbital ephemeris   2012A+A...547A..61S  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 6100 ± 150 K
Stellar metal abundance ([Fe/H] or [M/H])   −0.35 ± 0.14 dex
Stellar mass 1.39 +0.09 −0.08   Msun
Stellar radius 2.35 +0.10 −0.09 Rsun
Stellar logarithmic surface gravity 3.840 ± 0.024 c.g.s.
Stellar mean density 0.108 ± 0.010
( 0.152 ± 0.014 )
ρsun
g cm-3
Orbital eccentricity 0.0 +0.24 −0.0  
Orbital semimajor axis   0.0367 ± 0.0008  AU
Planetary mass 0.86 ± 0.08
( 273 ± 25 )
Mjup
Mearth
Planetary radius 2.06 ± 0.10
( 23.1 ± 1.1 )
Rjup
Rearth
Planetary surface gravity 4.69 ± 0.48
2.67 ± 0.04
m/s2
log(cgs)
Planetary mean density 0.099 ± 0.014
( 0.131 ± 0.019 )
ρjup
g cm-3
Planetary equilibrium temperature 2470 +54 −56 K
Reference of detailed study 2017MNRAS.464..810B  

 

Entries in the catalogue of Rossiter-McLaughlin measurements:
 
Reference λ (degrees)
Brown et al. (2016)   −6.4   ±   5.9  

 

 

WASP-78 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)