TEPCat: CoRoT-4


 

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

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2008A+A...488L..43A  
Date of discovery paper 2008 / 7 / 28 y / m / d
Right ascension 06 48 46.72 h m s
Declination −00 40 22.0 d m s
V-band apparent magnitude 14.0 mag
K-band apparent magnitude 12.29 mag
Transit duration 0.184
( 4.42 )
day
hour
Transit depth 1.3 %
Time of mid-transit   2454141.36416 ± 0.00089     HJD or BJD
Orbital period 9.20205 ± 0.00037 days
Reference for orbital ephemeris   2008A+A...488L..43A  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 6190 ± 60 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.05 ± 0.07 dex
Stellar mass 1.194 +0.049 −0.050   Msun
Stellar radius 1.148 +0.092 −0.032 Rsun
Stellar logarithmic surface gravity 4.396 +0.024 −0.068 c.g.s.
Stellar mean density 0.790 +0.064 −0.161
( 1.115 +0.090 −0.227 )
ρsun
g cm-3
Orbital eccentricity 0.0  
Orbital semimajor axis   0.09120 +0.00125 −0.00130  AU
Planetary mass 0.731 +0.071 −0.072
( 232 +22 −22 )
Mjup
Mearth
Planetary radius 1.160 +0.115 −0.040
( 13.00 + 1.29 − 0.45 )
Rjup
Rearth
Planetary surface gravity 13.5 +1.6 −2.6
3.13 +0.05 −0.09
m/s2
log(cgs)
Planetary mean density 0.438 +0.062 −0.116
( 0.581 +0.082 −0.154 )
ρjup
g cm-3
Planetary equilibrium temperature 1058 +42 −17 K
Reference of detailed study 2011MNRAS.417.2166S  

 

CoRoT-4 does not have an entry in the catalogue of Rossiter-McLaughlin measurements.

 

CoRoT-4 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same as the physical properties given above, but in some cases the Homogeneous Studies results given below have been superseded by newer analyses.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 63 ± 6 m/s
Stellar effective temperature 6190 ± 60 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.05 ± 0.07 dex
Orbital inclination 89.96 +0.04 −0.79   degrees
Fractional stellar radius (R* / a) 0.0585 +0.0046 −0.0015  
Fractional planetary radius (Rpl / a)   0.00608 +0.00060 −0.00020   
Light curve analysis reference 2011MNRAS.417.2166S  
 
Derived parameters Value Unit
Stellar mass 1.194 ± 0.043 +0.024 −0.026 Msun
Stellar radius 1.148 +0.092 −0.032 ± 0.008 Rsun
Stellar logarithmic surface gravity 4.396 +0.024 −0.068 ± 0.003 c.g.s.
Stellar mean density 0.790 +0.064 −0.161 ρsun
Orbital semimajor axis   0.09120 +0.00110 −0.00112 +0.00061 −0.00067  AU
Planetary mass 0.731 +0.071 −0.072 +0.009 −0.010 Mjup
Planetary radius 1.160 +0.115 −0.040 +0.007 −0.008 Rjup
Planetary surface gravity 13.5 +1.6 −2.6 m/s2
Planetary mean density 0.4378 +0.062 −0.116 +0.003 −0.002 ρjup
Planetary equilibrium temperature 1058 +42 −17 K
Safronov number 0.0962 +0.0099 −0.0127 +0.0007 −0.0006  
Main analysis reference 2011MNRAS.417.2166S  

 


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