TEPCat: HATS-18


 

This page summarises the information held within TEPCat for the transiting planetary system HATS-18. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2016AJ....152..127P  
Date of discovery paper 2016 / 6 / 6 y / m / d
Data/telescope used for discovery HATS  
Right ascension 11 35 49.92 h m s
Declination −29 09 21.6 d m s
Right ascension (decimal) 173.95800 degrees
Declination (decimal) -29.15600 degrees
V-band apparent magnitude 14.07 mag
K-band apparent magnitude 12.29 mag
Transit duration 0.07866
( 1.8878 )
day
hour
Transit depth 2.3 %
Time of mid-transit   2458626.511225 ± 0.000071     HJD or BJD
Orbital period 0.83784382 ± 0.00000011 days
Reference for orbital ephemeris   arXiv:2207.05873  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 5600 ± 120 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.280 ± 0.080 dex
Stellar mass 1.048 ± 0.063   Msun
Stellar radius 0.999 ± 0.023 Rsun
Stellar logarithmic surface gravity 4.460 ± 0.016 c.g.s.
Stellar mean density 1.052 ± 0.043
( 1.484 ± 0.061 )
ρsun
g cm-3
Orbital eccentricity 0.0 +0.166 −0.0  
Orbital semimajor axis   0.01768 ± 0.00035  AU
Planetary mass 1.990 ± 0.093
( 632 ± 29 )
Mjup
Mearth
Planetary radius 1.304 ± 0.036
( 14.62 ± 0.40 )
Rjup
Rearth
Planetary surface gravity 29.0 ± 1.3
3.46 ± 0.02
m/s2
log(cgs)
Planetary mean density 0.840 ± 0.053
( 1.114 ± 0.070 )
ρjup
g cm-3
Planetary equilibrium temperature 2029 ± 45 K
Reference of detailed study arXiv:2207.05873  

 

HATS-18 does not have an entry in the catalogue of orbital obliquity measurements.

 

HATS-18 has not been analysed as part of the Homogeneous Studies of Transiting Extrasolar Planets project.

 


Page generated on 2022/12/06           John Southworth   (Keele University, UK)