TEPCat: NGTS-1


 

This page summarises the information held within TEPCat for the transiting planetary system NGTS-1. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper arXiv:1710.11099  
Date of discovery paper 2017 / 10 / 31 y / m / d
Right ascension 05 30 51.45 h m s
Declination −36 37 50.8 d m s
V-band apparent magnitude 15.52 mag
K-band apparent magnitude 11.94 mag
Transit duration 0.0513
( 1.231 )
day
hour
Transit depth 2.3 %
Time of mid-transit   2457720.65939 ± 0.00067     HJD or BJD
Orbital period 2.647297 ± 0.000021 days
Reference for orbital ephemeris   arXiv:1710.11099  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 3916 +71 −63 K
Stellar metal abundance ([Fe/H] or [M/H])   0 dex
Stellar mass 0.617 +0.023 −0.062   Msun
Stellar radius 0.573 ± 0.077 Rsun
Stellar logarithmic surface gravity 4.71 ± 0.23 c.g.s.
Stellar mean density 3.1 +1.7 −1.0
( 4.4 +2.4 −1.4 )
ρsun
g cm-3
Orbital eccentricity 0.016 +0.023 −0.016  
Orbital semimajor axis   0.0326 +0.0047 −0.0045  AU
Planetary mass 0.812 +0.066 −0.075
( 258 +20 −23 )
Mjup
Mearth
Planetary radius 1.33 +0.61 −0.33
( 14.9 + 6.8 − 3.7 )
Rjup
Rearth
Planetary surface gravity m/s2
log(cgs)
Planetary mean density 0.32 +0.44 −0.21
( 0.42 +0.58 −0.28 )
ρjup
g cm-3
Planetary equilibrium temperature 790 ± 20 K
Reference of detailed study arXiv:1710.11099  

 

NGTS-1 does not have an entry in the catalogue of Rossiter-McLaughlin measurements.

 

NGTS-1 has not been analysed as part of the Homogeneous Studies of Transiting Extrasolar Planets project.

 


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