TEPCat: KELT-17


 

This page summarises the information held within TEPCat for the transiting planetary system KELT-17. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2016AJ....152..136Z  
Date of discovery paper 2016 / 7 / 14 y / m / d
Data/telescope used for discovery KELT  
Right ascension 08 22 28.21 h m s
Declination +13 44 07.2 d m s
Right ascension (decimal) 125.61754 degrees
Declination (decimal) 13.73533 degrees
V-band apparent magnitude 9.29 mag
K-band apparent magnitude 8.65 mag
Transit duration 0.1448
( 3.475 )
day
hour
Transit depth 1.0 %
Time of mid-transit   2459215.937950 ± 0.000086     HJD or BJD
Orbital period 3.0801724 ± 0.0000047 days
Reference for orbital ephemeris   arXiv:2204.09077  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 7454 ± 49 K
Stellar metal abundance ([Fe/H] or [M/H])   −0.018 +0.074 −0.072 dex
Stellar mass 1.635 +0.066 −0.061   Msun
Stellar radius 1.645 +0.060 −0.055 Rsun
Stellar logarithmic surface gravity 4.220 +0.022 −0.024 c.g.s.
Stellar mean density 0.367 +0.032 −0.030
( 0.518 +0.045 −0.042 )
ρsun
g cm-3
Orbital eccentricity 0.0 +0.39 −0.0  
Orbital semimajor axis   0.04881 +0.00065 −0.00061  AU
Planetary mass 1.31 +0.28 −0.29
( 416 +89 −92 )
Mjup
Mearth
Planetary radius 1.507 ± 0.055
( 16.89 ± 0.62 )
Rjup
Rearth
Planetary surface gravity 13.9 +3.2 −3.1
3.14 +0.09 −0.11
m/s2
log(cgs)
Planetary mean density 0.35 +0.09 −0.08
( 0.46 +0.12 −0.11 )
ρjup
g cm-3
Planetary equilibrium temperature 2087 +32 −33 K
Reference of detailed study arXiv:2204.09077  

 

Entries in the catalogue of orbital obliquity measurements:
 
Reference λ (degrees)
Zhou et al. (2016)   −115.9   ±   4.1  

 

 

KELT-17 has not been analysed as part of the Homogeneous Studies of Transiting Extrasolar Planets project.

 


Page generated on 2022/12/01           John Southworth   (Keele University, UK)