TEPCat: TrES-1


 

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

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2004ApJ...613L.153A  
Date of discovery paper 2004 / 8 / 6 y / m / d
Right ascension 19 04 09.84 h m s
Declination +36 37 57.5 d m s
V-band apparent magnitude 11.79 mag
K-band apparent magnitude 9.82 mag
Transit duration 0.104
( 2.50 )
day
hour
Transit depth 2.2 %
Time of mid-transit   2455016.969937 ± 0.000070     HJD or BJD
Orbital period 3.03006973 ± 0.00000018 days
Reference for orbital ephemeris   2015MNRAS.450.3101B  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 5226 ± 50 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.06 ± 0.05 dex
Stellar mass 0.892 ± 0.049   Msun
Stellar radius 0.818 ± 0.021 Rsun
Stellar logarithmic surface gravity 4.563 ± 0.020 c.g.s.
Stellar mean density 1.632 ± 0.092
( 2.30 ± 0.13 )
ρsun
g cm-3
Orbital eccentricity 0.0  
Orbital semimajor axis   0.03946 ± 0.00072  AU
Planetary mass 0.761 ± 0.051
( 241 ± 16 )
Mjup
Mearth
Planetary radius 1.099 ± 0.035
( 12.32 ± 0.39 )
Rjup
Rearth
Planetary surface gravity 15.6 ± 1.2
3.19 ± 0.03
m/s2
log(cgs)
Planetary mean density 0.57 ± 0.06
( 0.756 ± 0.080 )
ρjup
g cm-3
Planetary equilibrium temperature 1147 ± 15 K
Reference of detailed study 2010MNRAS.408.1689S  

 

Entries in the catalogue of Rossiter-McLaughlin measurements:
 
Reference λ (degrees)
Narita et al. (2007)   30   ±   21  

 

 

TrES-1 has been examined as part of the Homogeneous Studies of Transiting Extrasolar Planets project. The details from this work have been given below. In most instances they are the same as the physical properties given above, but in some cases the Homogeneous Studies results given below have been superseded by newer analyses. Separate statistical and systematic errorbars are given where relevant.

Measured parameters Value Unit
Orbital velocity amplitude 115.2 ± 6.2 m/s
Stellar effective temperature 5226 ± 50 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.06 ± 0.05 dex
Orbital inclination 88.67 ± 0.71   degrees
Fractional stellar radius (R* / a) 0.0964 ± 0.0018  
Fractional planetary radius (Rpl / a)   0.01331 ± 0.00035   
Light curve analysis reference 2008MNRAS.386.1644S  
 
Derived parameters Value Unit
Stellar mass 0.892 ± 0.026 ± 0.041 Msun
Stellar radius 0.818 ± 0.017 ± 0.013 Rsun
Stellar logarithmic surface gravity 4.563 ± 0.019 ± 0.007 c.g.s.
Stellar mean density 1.632 ± 0.092 ρsun
Orbital semimajor axis   0.03946 ± 0.00039 ± 0.00060  AU
Planetary mass 0.761 ± 0.045 ± 0.023 Mjup
Planetary radius 1.099 ± 0.031 ± 0.017 Rjup
Planetary surface gravity 15.6 ± 1.2 m/s2
Planetary mean density 0.536 ± 0.052 ± 0.009 ρjup
Planetary equilibrium temperature 1147 ± 15 K
Safronov number 0.0612 ± 0.0037 ± 0.0009  
Main analysis reference 2010MNRAS.408.1689S  

 


Page generated on 2017/12/15           John Southworth   (Keele University, UK)