TEPCat: CoRoT-8


 

This page summarises the information held within TEPCat for the transiting planetary system CoRoT-8. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2010A+A...520A..66B  
Date of discovery paper 2010 / 8 / 2 y / m / d
Right ascension 19 26 21.24 h m s
Declination +01 25 35.2 d m s
V-band apparent magnitude 14.76 mag
K-band apparent magnitude 11.46 mag
Transit duration 0.114
( 2.74 )
day
hour
Transit depth 0.7 %
Time of mid-transit   2454239.03311 ± 0.00078     HJD or BJD
Orbital period 6.212381 ± 0.000057 days
Reference for orbital ephemeris   2011MNRAS.417.2166S  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 5080 ± 80 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.31 ± 0.05 dex
Stellar mass 0.878 ± 0.085   Msun
Stellar radius 0.898 ± 0.090 Rsun
Stellar logarithmic surface gravity 4.475 ± 0.077 c.g.s.
Stellar mean density 1.21 ± 0.32
( 1.71 ± 0.45 )
ρsun
g cm-3
Orbital eccentricity 0.0  
Orbital semimajor axis   0.0633 ± 0.0020  AU
Planetary mass 0.216 ± 0.036
( 68 ± 11 )
Mjup
Mearth
Planetary radius 0.712 ± 0.083
( 7.98 ± 0.93 )
Rjup
Rearth
Planetary surface gravity 10.6 ± 2.9
3.0 ± 0.1
m/s2
log(cgs)
Planetary mean density 0.56 ± 0.21
( 0.74 ± 0.28 )
ρjup
g cm-3
Planetary equilibrium temperature 922 ± 41 K
Reference of detailed study 2011MNRAS.417.2166S  

 

CoRoT-8 does not have an entry in the catalogue of Rossiter-McLaughlin measurements.

 

CoRoT-8 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same as the physical properties given above, but in some cases the Homogeneous Studies results given below have been superseded by newer analyses.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 26 ± 4 m/s
Stellar effective temperature 5080 ± 80 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.31 ± 0.05 dex
Orbital inclination 87.44 ± 0.56   degrees
Fractional stellar radius (R* / a) 0.0659 ± 0.0056  
Fractional planetary radius (Rpl / a)   0.00537 ± 0.00060   
Light curve analysis reference 2011MNRAS.417.2166S  
 
Derived parameters Value Unit
Stellar mass 0.878 ± 0.078 ± 0.035 Msun
Stellar radius 0.898 ± 0.090 ± 0.012 Rsun
Stellar logarithmic surface gravity 4.475 ± 0.077 ± 0.006 c.g.s.
Stellar mean density 1.21 ± 0.32 ρsun
Orbital semimajor axis   0.0633 ± 0.0019 ± 0.0008  AU
Planetary mass 0.216 ± 0.036 ± 0.006 Mjup
Planetary radius 0.712 ± 0.083 ± 0.010 Rjup
Planetary surface gravity 10.6 ± 2.9 m/s2
Planetary mean density 0.56 ± 0.21 ± 0.01 ρjup
Planetary equilibrium temperature 922 ± 41 K
Safronov number 0.0437 ± 0.0084 ± 0.0006  
Main analysis reference 2011MNRAS.417.2166S  

 


Page generated on 2017/12/11           John Southworth   (Keele University, UK)