TEPCat: TRAPPIST-1c


 

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

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2016Natur.533..221G  
Date of discovery paper 2016 / 5 / 3 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 0.02938
( 0.7051 )
day
hour
Transit depth 0.64 %
Time of mid-transit   2457258.587287 ± 0.00027     HJD or BJD
Orbital period 2.421937 ± 0.000018 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 +0.083 −0.0  
Orbital semimajor axis   0.01580 ± 0.00013  AU
Planetary mass 0.0041 ± 0.0002
( 1.303 ± 0.064 )
Mjup
Mearth
Planetary radius 0.0979 +0.0012 −0.0011
( 1.097 +0.013 −0.012 )
Rjup
Rearth
Planetary surface gravity 10.65 ± 0.42
3.03 ± 0.02
m/s2
log(cgs)
Planetary mean density 4.11 +0.17 −0.18
( 5.45 +0.23 −0.24 )
ρjup
g cm-3
Planetary equilibrium temperature 334.8 ± 4.7 K
Reference of detailed study 2021PSJ.....2....1A  

 

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

 


Page generated on 2024/05/08           John Southworth   (Keele University, UK)