TEPCat: TRAPPIST-1h


 

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

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2017NatAs...1E.129L  
Date of discovery paper 2017 / 3 / 14 y / m / d
Data/telescope used for discovery TRAPPIST  
Right ascension 23 06 29.28 h m s
Declination −05 02 28.5 d m s
Right ascension (decimal) 346.62200 degrees
Declination (decimal) -5.04125 degrees
V-band apparent magnitude 18.80 mag
K-band apparent magnitude 10.30 mag
Transit duration 0.05342
( 1.2821 )
day
hour
Transit depth 0.35 %
Time of mid-transit   2457249.60676 ± 0.00272     HJD or BJD
Orbital period 18.772866 ± 0.000214 days
Reference for orbital ephemeris   2021PSJ.....2....1A  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 2566 ± 26 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.04 ± 0.08 dex
Stellar mass 0.0898 ± 0.0023   Msun
Stellar radius 0.1192 ± 0.0013 Rsun
Stellar logarithmic surface gravity 5.2396 +0.0056 −0.0073 c.g.s.
Stellar mean density 48.0 ± 3.9
( 67.7 ± 5.5 )
ρsun
g cm-3
Orbital eccentricity 0.0  
Orbital semimajor axis   0.06189 ± 0.00053  AU
Planetary mass 0.0010 ± 0.0001
( 0.318 ± 0.032 )
Mjup
Mearth
Planetary radius 0.0674 ± 0.0012
( 0.755 ± 0.013 )
Rjup
Rearth
Planetary surface gravity 5.59 ± 0.37
2.75 ± 0.03
m/s2
log(cgs)
Planetary mean density 3.13 +0.24 −0.23
( 4.15 +0.32 −0.31 )
ρjup
g cm-3
Planetary equilibrium temperature 169.2 ± 2.4 K
Reference of detailed study 2021PSJ.....2....1A  

 

TRAPPIST-1h does not have an entry in the catalogue of orbital obliquity measurements.

 


Page generated on 2024/06/14           John Southworth   (Keele University, UK)