TEPCat: HAT-P-42


 

This page summarises the information held within TEPCat for the transiting planetary system HAT-P-42. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2013A+A...558A..86B  
Date of discovery paper 2013 / 1 / 1 y / m / d
Right ascension 09 01 22.66 h m s
Declination +06 05 50.0 d m s
V-band apparent magnitude 12.17 mag
K-band apparent magnitude 10.63 mag
Transit duration 0.1680
( 4.032 )
day
hour
Transit depth 0.8 %
Time of mid-transit   2455952.52603 ± 0.00075     HJD or BJD
Orbital period 4.641878 ± 0.000032 days
Reference for orbital ephemeris   2013A+A...558A..86B  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 5743 ± 50 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.27 ± 0.08 dex
Stellar mass 1.178 ± 0.068   Msun
Stellar radius 1.530 ± 0.140 Rsun
Stellar logarithmic surface gravity 4.14 ± 0.07 c.g.s.
Stellar mean density ρsun
g cm-3
Orbital eccentricity 0.0 +0.2 −0.0  
Orbital semimajor axis   0.0575 ± 0.0011  AU
Planetary mass 1.044 ± 0.083
( 331 ± 26 )
Mjup
Mearth
Planetary radius 1.280 ± 0.153
( 14.3 ± 1.7 )
Rjup
Rearth
Planetary surface gravity 15.8 ± 3.7
3.20 ± 0.09
m/s2
log(cgs)
Planetary mean density 0.46 +0.26 −0.11
( 0.61 +0.34 −0.15 )
ρjup
g cm-3
Planetary equilibrium temperature 1428 ± 60 K
Reference of detailed study 2013A+A...558A..86B  

 

HAT-P-42 does not have an entry in the catalogue of Rossiter-McLaughlin measurements.

 

HAT-P-42 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)