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
Right ascension 23 06 29.28 h m s
Declination −05 02 28.5 d m s
V-band apparent magnitude 18.80 mag
K-band apparent magnitude 10.30 mag
Transit duration 0.02938
( 0.7051 )
day
hour
Transit depth 0.69 %
Time of mid-transit   2457282.80879 ± 0.00018     HJD or BJD
Orbital period 2.42180746 ± 0.00000091 days
Reference for orbital ephemeris   2018MNRAS.475.3577D  

 

Physical properties from the most recent detailed study:
 
Quantity Value Unit
Stellar effective temperature 2511 ± 37 K
Stellar metal abundance ([Fe/H] or [M/H])   +0.04 ± 0.08 dex
Stellar mass 0.0890 ± 0.0070   Msun
Stellar radius 0.1210 ± 0.0030 Rsun
Stellar logarithmic surface gravity c.g.s.
Stellar mean density 51.1 +1.2 −2.4
( 72.1 + 1.7 − 3.4 )
ρsun
g cm-3
Orbital eccentricity 0.0 +0.083 −0.0  
Orbital semimajor axis   0.01576 +0.00038 −0.00034  AU
Planetary mass 0.0036 ± 0.0004
( 1.14 ± 0.13 )
Mjup
Mearth
Planetary radius 0.0977 +0.0028 −0.0027
( 1.095 +0.031 −0.030 )
Rjup
Rearth
Planetary surface gravity 9.48 ± 0.85
2.98 ± 0.04
m/s2
log(cgs)
Planetary mean density 4.85 ± 0.43
( 6.43 ± 0.57 )
ρjup
g cm-3
Planetary equilibrium temperature 334.8 ± 4.7 K
Reference of detailed study arXiv:1802.01377  

 

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

 

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

 


Page generated on 2018/04/18           John Southworth   (Keele University, UK)