TEPCat: NGTS-28


 

This page summarises the information held within TEPCat for the transiting brown dwarf system NGTS-28. Please see here for descriptions of the quantities given below.

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2024MNRAS.530..318H  
Date of discovery paper 2024 / 2 / 16 y / m / d
Data/telescope used for discovery NGTS  
Right ascension 14 11 42.99 h m s
Declination −29 58 26.7 d m s
Right ascension (decimal) 212.92912 degrees
Declination (decimal) -29.97408 degrees
V-band apparent magnitude 14.74 mag
K-band apparent magnitude 11.76 mag
Transit duration 0.0558
( 1.339 )
day
hour
Transit depth 2.8 %
Time of mid-transit   2458953.9685 ± 0.0001     HJD or BJD
Orbital period 1.2541 ± 0.0001 days
Reference for orbital ephemeris   2024MNRAS.530..318H  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 3626 +47 −44 K
Stellar metal abundance ([Fe/H] or [M/H])   −0.14 +0.16 −0.17 dex
Stellar mass 0.56 ± 0.02   Msun
Stellar radius 0.59 ± 0.03 Rsun
Stellar logarithmic surface gravity 4.74 +0.10 −0.09 c.g.s.
Stellar mean density 3.44 ± 0.16
( 4.85 ± 0.23 )
ρsun
g cm-3
Orbital eccentricity 0.0404 +0.0067 −0.0101  
Orbital semimajor axis   0.0202 ± 0.0011  AU
Planetary mass 69.0 +5.3 −4.8
( 21934 +1685 −1526 )
Mjup
Mearth
Planetary radius 0.954 +0.049 −0.048
( 10.69 + 0.55 − 0.54 )
Rjup
Rearth
Planetary surface gravity 2108 +78 −77
5.32 +0.02 −0.02
m/s2
log(cgs)
Planetary mean density 74 +18 −14
( 98 +23 −18 )
ρjup
g cm-3
Planetary equilibrium temperature 863 +13 −12 K
Reference of detailed study 2024MNRAS.530..318H  

 

NGTS-28 does not have an entry in the catalogue of orbital obliquity measurements.

 


Page generated on 2025/02/12           John Southworth   (Keele University, UK)