TEPCat: Qatar-1


 

This page summarises the information held within TEPCat for the transiting planetary system Qatar-1. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2011MNRAS.417..709A  
Date of discovery paper 2010 / 12 / 14 y / m / d
Right ascension 20 13 31.62 h m s
Declination +65 09 43.5 d m s
V-band apparent magnitude 12.84 mag
K-band apparent magnitude 10.41 mag
Transit duration 0.06921
( 1.6610 )
day
hour
Transit depth 2.3 %
Time of mid-transit   2456234.103218 ± 0.000061     HJD or BJD
Orbital period 1.4200242 ± 0.0000002 days
Reference for orbital ephemeris   2017AJ....153...78C  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 4910 ± 100 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.20 ± 0.10 dex
Stellar mass 0.838 +0.043 −0.041   Msun
Stellar radius 0.803 ± 0.016 Rsun
Stellar logarithmic surface gravity 4.552 +0.012 −0.011 c.g.s.
Stellar mean density 1.620 +0.052 −0.050
( 2.286 +0.073 −0.071 )
ρsun
g cm-3
Orbital eccentricity 0.0 +0.031 −0.0  
Orbital semimajor axis   0.02332 +0.00040 −0.00038  AU
Planetary mass 1.294 +0.052 −0.049
( 411 +16 −15 )
Mjup
Mearth
Planetary radius 1.143 +0.026 −0.025
( 12.81 + 0.29 − 0.28 )
Rjup
Rearth
Planetary surface gravity 24.55 +0.86 −0.83
3.39 +0.01 −0.01
m/s2
log(cgs)
Planetary mean density 0.811 +0.043 −0.040
( 1.076 +0.057 −0.053 )
ρjup
g cm-3
Planetary equilibrium temperature 1418 +28 −27 K
Reference of detailed study 2017AJ....153...78C  

 

Entries in the catalogue of Rossiter-McLaughlin measurements:
 
Reference λ (degrees)
Covino et al. (2013)   −8.4   ±   7.1  

 

 

Qatar-1 has not been analysed as part of the Homogeneous Studies of Transiting Extrasolar Planets project.

 


Page generated on 2017/12/05           John Southworth   (Keele University, UK)