TEPCat: NGTS-17


 

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

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper arXiv:2103.10302  
Date of discovery paper 2021 / 3 / 19 y / m / d
Right ascension 04 51 36.14 h m s
Declination −34 13 34.4 d m s
V-band apparent magnitude 14.33 mag
K-band apparent magnitude 12.72 mag
Transit duration 0.1413
( 3.391 )
day
hour
Transit depth 1.0 %
Time of mid-transit   2458442.5219 ± 0.0009     HJD or BJD
Orbital period 3.24253 ± 0.00001 days
Reference for orbital ephemeris   arXiv:2103.10302  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 5650 ± 100 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.15 ± 0.1 dex
Stellar mass 1.025 +0.034 −0.033   Msun
Stellar radius 1.337 ± 0.042 Rsun
Stellar logarithmic surface gravity 4.00 ± 0.12 c.g.s.
Stellar mean density ρsun
g cm-3
Orbital eccentricity 0.0  
Orbital semimajor axis   0.0391 ± 0.0043  AU
Planetary mass 0.76 +0.20 −0.16
( 241 +63 −50 )
Mjup
Mearth
Planetary radius 1.24 ± 0.11
( 13.9 ± 1.2 )
Rjup
Rearth
Planetary surface gravity m/s2
log(cgs)
Planetary mean density 0.38 +0.20 −0.13
( 0.50 +0.27 −0.17 )
ρjup
g cm-3
Planetary equilibrium temperature 1457 ± 50 K
Reference of detailed study arXiv:2103.10302  

 

NGTS-17 does not have an entry in the catalogue of orbital obliquity measurements.

 

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

 


Page generated on 2021/12/02           John Southworth   (Keele University, UK)