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
Right ascension 11 35 49.92 h m s
Declination −29 09 21.6 d m s
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   2457089.90598 ± 0.00026     HJD or BJD
Orbital period 0.83784340 ± 0.00000047 days
Reference for orbital ephemeris   2016AJ....152..127P  

 

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 1.037 ± 0.047   Msun
Stellar radius 1.020 +0.057 −0.031 Rsun
Stellar logarithmic surface gravity 4.436 ± 0.034 c.g.s.
Stellar mean density 0.97 +0.09 −0.16
( 1.37 +0.13 −0.23 )
ρsun
g cm-3
Orbital eccentricity 0.0 +0.166 −0.0  
Orbital semimajor axis   0.01761 ± 0.00027  AU
Planetary mass 1.980 ± 0.077
( 629 ± 24 )
Mjup
Mearth
Planetary radius 1.337 +0.102 −0.049
( 14.99 + 1.14 − 0.55 )
Rjup
Rearth
Planetary surface gravity 27.2 +2.3 −3.7
3.43 +0.04 −0.06
m/s2
log(cgs)
Planetary mean density 0.77 +0.10 −0.15
( 1.02 +0.13 −0.20 )
ρjup
g cm-3
Planetary equilibrium temperature 2060 ± 59 K
Reference of detailed study 2016AJ....152..127P  

 

HATS-18 does not have an entry in the catalogue of Rossiter-McLaughlin measurements.

 

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

 


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