TEPCat: XO-3


 

This page summarises the information held within TEPCat for the transiting planetary system XO-3. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2008ApJ...677..657J  
Date of discovery paper 2007 / 10 / 17 y / m / d
Right ascension 04 21 52.70 h m s
Declination +57 49 01.9 d m s
V-band apparent magnitude 9.91 mag
K-band apparent magnitude 8.79 mag
Transit duration 0.1192
( 2.861 )
day
hour
Transit depth 0.8 %
Time of mid-transit   2455292.43266 ± 0.00015     HJD or BJD
Orbital period 3.19153285 ± 0.00000058 days
Reference for orbital ephemeris   2014ApJ...794..134W  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 6429 ± 75 K
Stellar metal abundance ([Fe/H] or [M/H])   −0.18 ± 0.05 dex
Stellar mass 1.206 ± 0.058   Msun
Stellar radius 1.409 ± 0.056 Rsun
Stellar logarithmic surface gravity 4.222 ± 0.027 c.g.s.
Stellar mean density 0.431 ± 0.041
( 0.608 ± 0.058 )
ρsun
g cm-3
Orbital eccentricity 0.2884 ± 0.0035  
Orbital semimajor axis   0.04529 ± 0.00073  AU
Planetary mass 11.83 ± 0.38
( 37606 ± 1208 )
Mjup
Mearth
Planetary radius 1.248 ± 0.049
( 13.99 ± 0.55 )
Rjup
Rearth
Planetary surface gravity 188 ± 13
4.27 ± 0.03
m/s2
log(cgs)
Planetary mean density 6.08 ± 0.67
( 8.07 ± 0.89 )
ρjup
g cm-3
Planetary equilibrium temperature 1729 ± 34 K
Reference of detailed study 2010MNRAS.408.1689S  

 

Entries in the catalogue of Rossiter-McLaughlin measurements:
 
Reference λ (degrees)
Hébrard et al. (2008)   70   ±   15  
Winn et al. (2009)   37.3   ±   3.7  
Hirano et al. (2011)   37.3   ±   3.0  

 

 

XO-3 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same as the physical properties given above, but in some cases the Homogeneous Studies results given below have been superseded by newer analyses.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 1488 ± 10 m/s
Stellar effective temperature 6429 ± 75 K
Stellar metal abundance ([Fe/H] or [M/H])   -0.18 ± 0.05 dex
Orbital inclination 83.89 ± 0.40   degrees
Fractional stellar radius (R* / a) 0.1447 ± 0.0046  
Fractional planetary radius (Rpl / a)   0.01317 ± 0.00047   
Light curve analysis reference 2010MNRAS.408.1689S  
 
Derived parameters Value Unit
Stellar mass 1.206 ± 0.046 ± 0.036 Msun
Stellar radius 1.409 ± 0.054 ± 0.014 Rsun
Stellar logarithmic surface gravity 4.222 ± 0.027 ± 0.004 c.g.s.
Stellar mean density 0.431 ± 0.041 ρsun
Orbital semimajor axis   0.04529 ± 0.00057 ± 0.00045  AU
Planetary mass 11.83 ± 0.31 ± 0.23 Mjup
Planetary radius 1.248 ± 0.047 ± 0.012 Rjup
Planetary surface gravity 188 ± 13 m/s2
Planetary mean density 5.69 ± 0.63 ± 0.06 ρjup
Planetary equilibrium temperature 1729 ± 34 K
Safronov number 0.711 ± 0.027 ± 0.007  
Main analysis reference 2010MNRAS.408.1689S  

 


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