TEPCat: NGTS-20


 

This page summarises the information held within TEPCat for the transiting planetary system NGTS-20. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper arXiv:2207.03911  
Date of discovery paper 2022 / 7 / 11 y / m / d
Data/telescope used for discovery NGTS  
Right ascension 03 05 10.23 h m s
Declination −21 56 01.1 d m s
Right ascension (decimal) 46.29263 degrees
Declination (decimal) -21.93364 degrees
V-band apparent magnitude 11.23 mag
K-band apparent magnitude 9.83 mag
Transit duration 0.190
( 4.56 )
day
hour
Transit depth 0.4 %
Time of mid-transit   2458432.9798 ± 0.0025     HJD or BJD
Orbital period 54.18915 ± 0.00015 days
Reference for orbital ephemeris   arXiv:2207.03911  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 5980 ± 80 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.15 ± 0.08 dex
Stellar mass 1.47 ± 0.09   Msun
Stellar radius 1.78 ± 0.05 Rsun
Stellar logarithmic surface gravity 3.8 ± 0.2 c.g.s.
Stellar mean density ρsun
g cm-3
Orbital eccentricity 0.432 ± 0.023  
Orbital semimajor axis   0.313 ± 0.013  AU
Planetary mass 2.98 +0.16 −0.15
( 947 +50 −47 )
Mjup
Mearth
Planetary radius 1.07 ± 0.04
( 11.99 ± 0.45 )
Rjup
Rearth
Planetary surface gravity m/s2
log(cgs)
Planetary mean density ρjup
g cm-3
Planetary equilibrium temperature 688 +14 −13 K
Reference of detailed study arXiv:2207.03911  

 

NGTS-20 does not have an entry in the catalogue of orbital obliquity measurements.

 

NGTS-20 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)