TEPCat: WASP-103


 

This page summarises the information held within TEPCat for the transiting planetary system WASP-103. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2014A+A...562L...3G  
Date of discovery paper 2014 / 1 / 14 y / m / d
Right ascension 16 37 15.59 h m s
Declination +07 11 00.0 d m s
V-band apparent magnitude 12.39 mag
K-band apparent magnitude 10.77 mag
Transit duration 0.11232
( 2.6957 )
day
hour
Transit depth 1.3 %
Time of mid-transit   2456836.296445 ± 0.000055     HJD or BJD
Orbital period 0.9255456 ± 0.0000013 days
Reference for orbital ephemeris   2015MNRAS.447..711S  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 6110 ± 160 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.06 ± 0.13 dex
Stellar mass 1.205 +0.096 −0.117   Msun
Stellar radius 1.413 +0.041 −0.048 Rsun
Stellar logarithmic surface gravity 4.219 +0.012 −0.016 c.g.s.
Stellar mean density 0.428 +0.007 −0.011
( 0.6039 +0.0099 −0.0155 )
ρsun
g cm-3
Orbital eccentricity 0.0  
Orbital semimajor axis   0.01979 +0.00052 −0.00065  AU
Planetary mass 1.47 +0.11 −0.13
( 467 +34 −41 )
Mjup
Mearth
Planetary radius 1.646 +0.052 −0.060
( 18.45 + 0.58 − 0.67 )
Rjup
Rearth
Planetary surface gravity 14.34 +0.83 −0.85
3.16 +0.02 −0.03
m/s2
log(cgs)
Planetary mean density 0.309 ± 0.025
( 0.410 ± 0.033 )
ρjup
g cm-3
Planetary equilibrium temperature 2489 +66 −65 K
Reference of detailed study arXiv:1608.00746  

 

Entries in the catalogue of Rossiter-McLaughlin measurements:
 
Reference λ (degrees)
Addison et al. (2016)   3   ±   33  

 

 

WASP-103 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same as the physical properties given above, but in some cases the Homogeneous Studies results given below have been superseded by newer analyses.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 271 ± 15 m/s
Stellar effective temperature 6110 ± 160 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.06 ± 0.13 dex
Orbital inclination 88.2 ± 1.5   degrees
Fractional stellar radius (R* / a) 0.3319 +0.0030 −0.0019  
Fractional planetary radius (Rpl / a)   0.03854 +0.00041 −0.00031   
Light curve analysis reference arXiv:1608.00746  
 
Derived parameters Value Unit
Stellar mass 1.205 +0.094 −0.015 +0.021 −0.015 Msun
Stellar radius 1.413 +0.040 −0.048 +0.008 −0.006 Rsun
Stellar logarithmic surface gravity 4.219 +0.012 −0.016 +0.003 −0.002 c.g.s.
Stellar mean density 0.428 +0.007 −0.011 ρsun
Orbital semimajor axis   0.01979 +0.00051 −0.00065 +0.00012 −0.00008  AU
Planetary mass 1.47 +0.11 −0.02 +0.13 −0.01 Mjup
Planetary radius 1.596 +0.044 −0.054 +0.009 −0.007 Rjup
Planetary surface gravity 14.34 +0.83 −0.85 m/s2
Planetary mean density 0.339 ± 0.023 +0.001 −0.002 ρjup
Planetary equilibrium temperature 2489 +66 −65 K
Safronov number 0.0303 +0.0020 −0.0019 +0.0001 −0.0002  
Main analysis reference arXiv:1608.00746  

 


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