TEPCat: HAT-P-57


 

This page summarises the information held within TEPCat for the transiting planetary system HAT-P-57. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2015AJ....150..197H  
Date of discovery paper 2015 / 10 / 30 y / m / d
Right ascension 18 18 58.32 h m s
Declination +10 35 50.3 d m s
V-band apparent magnitude 10.47 mag
K-band apparent magnitude 9.43 mag
Transit duration 0.14578
( 3.4987 )
day
hour
Transit depth 1.0 %
Time of mid-transit   2455113.48127 ± 0.00048     HJD or BJD
Orbital period 2.4652950 ± 0.0000032 days
Reference for orbital ephemeris   2015AJ....150..197H  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 7500 ± 250 K
Stellar metal abundance ([Fe/H] or [M/H])   −0.25 ± 0.25 dex
Stellar mass 1.47 ± 0.12   Msun
Stellar radius 1.500 ± 0.050 Rsun
Stellar logarithmic surface gravity 4.251 ± 0.018 c.g.s.
Stellar mean density 0.436 +0.016 −0.026
( 0.615 +0.023 −0.037 )
ρsun
g cm-3
Orbital eccentricity 0.0  
Orbital semimajor axis   0.0406 ± 0.0011  AU
Planetary mass 0.0 +1.85 −0.0
( 0 +588 −0 )
Mjup
Mearth
Planetary radius 1.413 ± 0.054
( 15.84 ± 0.61 )
Rjup
Rearth
Planetary surface gravity m/s2
log(cgs)
Planetary mean density ρjup
g cm-3
Planetary equilibrium temperature 2200 ± 76 K
Reference of detailed study 2015AJ....150..197H  

 

HAT-P-57 does not have an entry in the catalogue of Rossiter-McLaughlin measurements.

 

HAT-P-57 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)