TEPCat: TRAPPIST-1e


 

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

 

Discovery and basic observable quantities:
 
Quantity Value Unit
Reference of discovery paper 2017Natur.542..456G  
Date of discovery paper 2017 / 2 / 23 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 0.03883
( 0.9319 )
day
hour
Transit depth 0.55 %
Time of mid-transit   2457257.82771 ± 0.00041     HJD or BJD
Orbital period 6.101013 ± 0.000035 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 +0.085 −0.0  
Orbital semimajor axis   0.02925 ± 0.00025  AU
Planetary mass 0.0022 ± 0.0001
( 0.699 ± 0.032 )
Mjup
Mearth
Planetary radius 0.0821 +0.0012 −0.0011
( 0.920 +0.013 −0.012 )
Rjup
Rearth
Planetary surface gravity 8.01 ± 0.24
2.90 ± 0.01
m/s2
log(cgs)
Planetary mean density 3.68 +0.13 −0.14
( 4.88 +0.17 −0.19 )
ρjup
g cm-3
Planetary equilibrium temperature 246.1 ± 3.5 K
Reference of detailed study 2021PSJ.....2....1A  

 

Entries in the catalogue of orbital obliquity measurements:
 
Reference λ (degrees)
Hirano et al.(2020)   9   + 45   - 51  

 

 


Page generated on 2024/03/28           John Southworth   (Keele University, UK)