TEPCat: CoRoT-2


 

This page summarises the information held within TEPCat for the transiting planetary system CoRoT-2. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2008A+A...482L..21A  
Date of discovery paper 2008 / 3 / 21 y / m / d
Right ascension 19 27 06.50 h m s
Declination +01 23 01.4 d m s
V-band apparent magnitude 12.57 mag
K-band apparent magnitude 10.31 mag
Transit duration 0.09446
( 2.2670 )
day
hour
Transit depth 3.2 %
Time of mid-transit   2455628.44758 ± 0.00014     HJD or BJD
Orbital period 1.74299673 ± 0.00000031 days
Reference for orbital ephemeris   2015MNRAS.450.3101B  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 5598 ± 50 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.04 ± 0.05 dex
Stellar mass 0.997 ± 0.049   Msun
Stellar radius 0.901 ± 0.019 Rsun
Stellar logarithmic surface gravity 4.527 ± 0.017 c.g.s.
Stellar mean density 1.362 ± 0.064
( 1.922 ± 0.090 )
ρsun
g cm-3
Orbital eccentricity 0.0143 ± 0.0077  
Orbital semimajor axis   0.02835 ± 0.00047  AU
Planetary mass 3.57 ± 0.15
( 1134 ± 47 )
Mjup
Mearth
Planetary radius 1.460 ± 0.031
( 16.37 ± 0.35 )
Rjup
Rearth
Planetary surface gravity 41.5 ± 1.7
3.62 ± 0.02
m/s2
log(cgs)
Planetary mean density 1.073 ± 0.058
( 1.423 ± 0.077 )
ρjup
g cm-3
Planetary equilibrium temperature 1521 ± 18 K
Reference of detailed study 2012MNRAS.426.1291S  

 

Entries in the catalogue of Rossiter-McLaughlin measurements:
 
Reference λ (degrees)
Bouchy et al. (2008)   7.2   ±   4.5  
Nutzmann et al. (2011)   4.7   ±   12.3  
Czesla et al. (2012)   −1.0   + 6.0   - 7.7  
Gillon et al. (2010)   4.0   + 5.9   - 6.1  

 

 

CoRoT-2 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same as the physical properties given above, but in some cases the Homogeneous Studies results given below have been superseded by newer analyses.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 603 ± 18 m/s
Stellar effective temperature 5598 ± 50 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.04 ± 0.05 dex
Orbital inclination 87.45 ± 0.34   degrees
Fractional stellar radius (R* / a) 0.1478 ± 0.0023  
Fractional planetary radius (Rpl / a)   0.02462 ± 0.00035   
Light curve analysis reference 2011MNRAS.417.2166S  
 
Derived parameters Value Unit
Stellar mass 0.997 ± 0.030 ± 0.039 Msun
Stellar radius 0.901 ± 0.015 ± 0.012 Rsun
Stellar logarithmic surface gravity 4.527 ± 0.016 ± 0.006 c.g.s.
Stellar mean density 1.362 ± 0.064 ρsun
Orbital semimajor axis   0.02835 ± 0.00029 ± 0.00037  AU
Planetary mass 3.57 ± 0.13 ± 0.09 Mjup
Planetary radius 1.460 ± 0.025 ± 0.019 Rjup
Planetary surface gravity 41.5 ± 1.7 m/s2
Planetary mean density 1.073 ± 0.057 ± 0.014 ρjup
Planetary equilibrium temperature 1521 ± 18 K
Safronov number 0.1390 ± 0.0048 ± 0.0018  
Main analysis reference 2012MNRAS.426.1291S  

 


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