TEPCat: HAT-P-7


 

This page summarises the information held within TEPCat for the transiting planetary system HAT-P-7. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2008ApJ...680.1450P  
Date of discovery paper 2008 / 1 / 12 y / m / d
Data/telescope used for discovery HAT  
Right ascension 19 28 59.36 h m s
Declination +47 58 10.3 d m s
Right ascension (decimal) 292.24733 degrees
Declination (decimal) 47.96953 degrees
V-band apparent magnitude 10.46 mag
K-band apparent magnitude 9.33 mag
Transit duration 0.164303
( 3.94327 )
day
hour
Transit depth 0.67 %
Time of mid-transit   2454954.358557 ± 0.000006     HJD or BJD
Orbital period 2.204735391 ± 0.000000017 days
Reference for orbital ephemeris   2021MNRAS.503.4092B  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 6310 ± 15 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.32 ± 0.04 dex
Stellar mass 1.59 ± 0.03   Msun
Stellar radius 2.02 ± 0.01 Rsun
Stellar logarithmic surface gravity 4.029 ± 0.003 c.g.s.
Stellar mean density 0.1919 ± 0.0025
( 0.2708 ± 0.0035 )
ρsun
g cm-3
Orbital eccentricity 0.0016 +0.0034 −0.0010  
Orbital semimajor axis   0.03805 ± 0.00036  AU
Planetary mass 1.87 ± 0.03
( 594.45 ± 9.54 )
Mjup
Mearth
Planetary radius 1.526 ± 0.008
( 17.105 ± 0.090 )
Rjup
Rearth
Planetary surface gravity 20.77 ± 0.33
3.317 ± 0.007
m/s2
log(cgs)
Planetary mean density 0.50 ± 0.01
( 0.663 ± 0.013 )
ρjup
g cm-3
Planetary equilibrium temperature 2194 ± 27 K
Reference of detailed study 2014PASJ...66...94B  

 

Entries in the catalogue of orbital obliquity measurements:
 
Reference λ (degrees)
Winn et al. (2009)   182.5   ±   9.4  
Narita et al. (2009)   −132.6   + 10.5   - 16.3  
Albrecht et al. (2012)   155   ±   37  
Benomar et al. (2014)   220.3   + 8.2   - 9.3  
Lund et al. (2014)   −999   ±   -999  
Masuda (2015) solution 1   142   + 12   - 16  
Masuda (2015) solution 2   136   + 16   - 22  
Campante et al. (2016)   −999   ±   -999  

 

 


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