TEPCat: Qatar-7


 

This page summarises the information held within TEPCat for the transiting planetary system Qatar-7. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper arXiv:1812.05601  
Date of discovery paper 2018 / 12 / 14 y / m / d
Right ascension 23 54 03.63 h m s
Declination +37 01 18.6 d m s
V-band apparent magnitude 13.03 mag
K-band apparent magnitude 11.56 mag
Transit duration 0.1491
( 3.578 )
day
hour
Transit depth 1.2 %
Time of mid-transit   2458043.32075 ± 0.00016     HJD or BJD
Orbital period 2.032070 ± 0.0000017 days
Reference for orbital ephemeris   arXiv:1812.05601  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 6387 ± 38 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.276 ± 0.071 dex
Stellar mass 1.409 ± 0.026   Msun
Stellar radius 1.564 ± 0.021 Rsun
Stellar logarithmic surface gravity 4.196 ± 0.029 c.g.s.
Stellar mean density 0.369 ± 0.011
( 0.521 ± 0.016 )
ρsun
g cm-3
Orbital eccentricity 0.0  
Orbital semimajor axis   0.0352 ± 0.0002  AU
Planetary mass 1.88 ± 0.25
( 597 ± 79 )
Mjup
Mearth
Planetary radius 1.70 ± 0.03
( 19.06 ± 0.34 )
Rjup
Rearth
Planetary surface gravity 16.7 +2.7 −2.4
3.22 +0.07 −0.07
m/s2
log(cgs)
Planetary mean density 0.378 ± 0.054
( 0.501 ± 0.072 )
ρjup
g cm-3
Planetary equilibrium temperature 2053 ± 15 K
Reference of detailed study arXiv:1812.05601  

 

Qatar-7 does not have an entry in the catalogue of orbital obliquity measurements.

 

Qatar-7 has not been analysed as part of the Homogeneous Studies of Transiting Extrasolar Planets project.

 


Page generated on 2019/07/16           John Southworth   (Keele University, UK)