TEPCat: TrES-4


 

This page summarises the information held within TEPCat for the transiting planetary system TrES-4. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2007ApJ...667L.195M  
Date of discovery paper 2007 / 6 / 18 y / m / d
Data/telescope used for discovery TrES  
Right ascension 17 53 13.06 h m s
Declination +37 12 42.4 d m s
Right ascension (decimal) 268.30442 degrees
Declination (decimal) 37.21178 degrees
V-band apparent magnitude 11.59 mag
K-band apparent magnitude 10.33 mag
Transit duration 0.1524
( 3.658 )
day
hour
Transit depth 1.1 %
Time of mid-transit   2454230.90560 ± 0.00030     HJD or BJD
Orbital period 3.55392771 ± 0.00000047 days
Reference for orbital ephemeris   2015A+A...575L..15S  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 6295 ± 65 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.28 ± 0.09 dex
Stellar mass 1.45 ± 0.05   Msun
Stellar radius 1.81 ± 0.08 Rsun
Stellar logarithmic surface gravity 4.09 ± 0.03 c.g.s.
Stellar mean density 0.246 +0.030 −0.022
( 0.347 +0.042 −0.031 )
ρsun
g cm-3
Orbital eccentricity 0.0 +0.016 −0.0  
Orbital semimajor axis   0.0516 ± 0.0005  AU
Planetary mass 0.494 ± 0.035
( 157 ± 11 )
Mjup
Mearth
Planetary radius 1.838 +0.081 −0.090
( 20.60 + 0.91 − 1.01 )
Rjup
Rearth
Planetary surface gravity 2.82 +0.34 −0.31
2.45 +0.05 −0.05
m/s2
log(cgs)
Planetary mean density 0.075 +0.012 −0.010
( 0.099 +0.016 −0.013 )
ρjup
g cm-3
Planetary equilibrium temperature 1795 +35 −39 K
Reference of detailed study 2015A+A...575L..15S  

 

Entries in the catalogue of orbital obliquity measurements:
 
Reference λ (degrees)
Narita et al. (2010)   6.3   ±   4.7  

 

 


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