TEPCat: HAT-P-9


 

This page summarises the information held within TEPCat for the transiting planetary system HAT-P-9. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2009ApJ...690.1393S  
Date of discovery paper 2008 / 6 / 25 y / m / d
Data/telescope used for discovery HAT  
Right ascension 07 20 40.48 h m s
Declination +37 08 26.2 d m s
Right ascension (decimal) 110.16867 degrees
Declination (decimal) 37.14061 degrees
V-band apparent magnitude 12.30 mag
K-band apparent magnitude 11.02 mag
Transit duration 0.143
( 3.43 )
day
hour
Transit depth 1.3 %
Time of mid-transit   2454417.9084 ± 0.0006     HJD or BJD
Orbital period 3.922814 ± 0.000002 days
Reference for orbital ephemeris   2012NewA...17..438D  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 6350 ± 150 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.12 ± 0.20 dex
Stellar mass 1.28 ± 0.10   Msun
Stellar radius 1.339 ± 0.080 Rsun
Stellar logarithmic surface gravity 4.293 ± 0.046 c.g.s.
Stellar mean density 0.534 ± 0.082
( 0.75 ± 0.12 )
ρsun
g cm-3
Orbital eccentricity 0.0  
Orbital semimajor axis   0.0529 ± 0.0014  AU
Planetary mass 0.778 ± 0.083
( 247 ± 26 )
Mjup
Mearth
Planetary radius 1.38 ± 0.10
( 15.5 ± 1.1 )
Rjup
Rearth
Planetary surface gravity 10.1 ± 1.7
3.00 ± 0.07
m/s2
log(cgs)
Planetary mean density 0.275 ± 0.066
( 0.365 ± 0.088 )
ρjup
g cm-3
Planetary equilibrium temperature 1540 ± 53 K
Reference of detailed study 2012MNRAS.426.1291S  

 

Entries in the catalogue of orbital obliquity measurements:
 
Reference λ (degrees)
Moutou et al. (2011)   −16   ±   8  

 

 


Page generated on 2024/03/28           John Southworth   (Keele University, UK)