Planet TRAPPIST-1 d

Detailed information about planet TRAPPIST-1 d and its parameters.

Planet

Name
TRAPPIST-1 d
Planet Status
Confirmed
Discovered in
2016
Publication
Status
—
Update
2026-09-02
Mass
Mass*sin(i)
—
Semi-Major Axis
Orbital Period
Eccentricity
Angular distance
—
ω
—
Tperi
—
Radius
Inclination
Detection Method
Primary Transit
Mass Meas. Method
TTV
Radius Meas. Method
Primary Transit
Primary transit
Secondary transit
—
λ
Impact Parameter b
Time Vr=0
—
Velocity Semiamplitude K
—
Calculated temperature
Measured temperature
—
Hottest point longitude
—
Geometric albedo
—
Surface gravity log(g/gH)
—
Alternate Names
K2-112 d, TOI-6838 d
Data Source Type Result Value Result Figure Notes Reference
Molecule Data Source Type Result Value Result Figure Notes Reference
H2O
Measurements Detected 2017 - BOURRIER V.
Modeling Detected 2020 - TURBET M.

3 May 2016: The period and semi-amjor axis of planet TRAPPIST-1 d are very uncertain with multiple solutions. The period 18 days is currently priviledged (Gillon et al. 2016). Further observations are planed with Hubble and Kepler 2.

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Star

Name
TRAPPIST-1
Distance
Spectral type
M8V
Apparent magnitude V
18.798
Apparent magnitude I
—
Apparent magnitude J
—
Apparent magnitude H
—
Apparent magnitude K
—
Mass
Age
Effective temperature
Radius
Metallicity [Fe/H]
0.04 ( ± 0.08 )
Detected Disc
—
Magnetic Field
—
RA2000
23:06:29.0
Dec2000
-05:02:29.0
Alternate Names
K2-112, TOI-6838, 2MASS J23062928-0502285

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