TEPCat: HAT-P-1


 

This page summarises the information held within TEPCat for the transiting planetary system HAT-P-1. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2007ApJ...656..552B  
Date of discovery paper 2006 / 8 / 12 y / m / d
Data/telescope used for discovery HAT  
Right ascension 22 57 46.83 h m s
Declination +38 40 29.8 d m s
Right ascension (decimal) 344.44512 degrees
Declination (decimal) 38.67494 degrees
V-band apparent magnitude 10.4 mag
K-band apparent magnitude 8.86 mag
Transit duration 0.11875
( 2.8500 )
day
hour
Transit depth 1.7 %
Time of mid-transit   2454363.94778 ± 0.00013     HJD or BJD
Orbital period 4.46530031 ± 0.00000018 days
Reference for orbital ephemeris   arXiv:2403.17690  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 5975 ± 50 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.13 ± 0.05 dex
Stellar mass 1.151 ± 0.019   Msun
Stellar radius 1.174 +0.026 −0.027 Rsun
Stellar logarithmic surface gravity 4.359 ± 0.014 c.g.s.
Stellar mean density 0.644 +0.013 −0.016
( 0.909 +0.018 −0.023 )
ρsun
g cm-3
Orbital eccentricity 0.0  
Orbital semimajor axis   0.05561 +0.00082 −0.00083  AU
Planetary mass 0.525 ± 0.019
( 166.89 ± 6.04 )
Mjup
Mearth
Planetary radius 1.319 ± 0.019
( 14.78 ± 0.21 )
Rjup
Rearth
Planetary surface gravity 7.46 ± 0.17
2.873 ± 0.010
m/s2
log(cgs)
Planetary mean density 0.213 +0.008 −0.007
( 0.2825 +0.0106 −0.0093 )
ρjup
g cm-3
Planetary equilibrium temperature 1322 +14 −15 K
Reference of detailed study 2014MNRAS.437...46N  

 

Entries in the catalogue of orbital obliquity measurements:
 
Reference λ (degrees)
Johnson et al. (2008)   3.7   ±   2.1  

 

 


Page generated on 2024/04/19           John Southworth   (Keele University, UK)