Planet TRAPPIST-1 i

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

Planet parameters Publications Observability Predictor

Planet

Name

TRAPPIST-1 i

Planet Status

Candidate

Discovered in

2018

Publication Status

—

Update

2026-06-30

Mass

—

Mass*sin(i)

—

Semi-Major Axis

0.081 (\pm 0.01)

AU 2 publications

First JWST thermal phase curves of temperate terrestrial exoplanets reveal no thick atmosphere around TRAPPIST-1 b and c
Predicting the Orbit of TRAPPIST-1i

Orbital Period

25.0 (\pm 1.3)

day 1 publication

First JWST thermal phase curves of temperate terrestrial exoplanets reveal no thick atmosphere around TRAPPIST-1 b and c

Eccentricity

—

Angular distance

—

ω

—

T_peri

—

Radius

0.02132 (\begin{matrix} + 0.00321 \\ - 0.0041 \end{matrix})

R_J 1 publication

First JWST thermal phase curves of temperate terrestrial exoplanets reveal no thick atmosphere around TRAPPIST-1 b and c

Inclination

89.8 (\pm 0.18)

deg 1 publication

First JWST thermal phase curves of temperate terrestrial exoplanets reveal no thick atmosphere around TRAPPIST-1 b and c

Detection Method

Primary Transit, Other

Mass Meas. Method

—

Radius Meas. Method

Primary Transit

Primary transit

—

Secondary transit

—

λ

—

Impact Parameter b

0.5 (\pm 0.12)

1 publication

First JWST thermal phase curves of temperate terrestrial exoplanets reveal no thick atmosphere around TRAPPIST-1 b and c

Time V_r=0

—

Velocity Semiamplitude K

—

Calculated temperature

—

Measured temperature

—

Hottest point longitude

—

Geometric albedo

—

Surface gravity log(g/g_H)

—

Alternate Names

K2-112 i, TOI-6838 i

Data Source	Type	Result Value	Result Figure	Notes	Reference

Molecule	Data Source	Type	Result Value	Result Figure	Notes	Reference

No remarks

No link

Star

Name

TRAPPIST-1

Distance

12.1 (\pm 0.4)

pc 1 publication

Temperate Earth-sized planets transiting a nearby ultracool dwarf star

Spectral type

M8V

Apparent magnitude V

18.798

Apparent magnitude I

—

Apparent magnitude J

—

Apparent magnitude H

—

Apparent magnitude K

—

Mass

0.08 (\pm 0.007)

M_Sun 1 publication

Temperate Earth-sized planets transiting a nearby ultracool dwarf star

Age

7.6 (\pm 2.2)

Gyr 1 publication

On the Age of the TRAPPIST-1 System

Effective temperature

2560.0 (\pm 55.0)

K 1 publication

Temperate Earth-sized planets transiting a nearby ultracool dwarf star

Radius

0.117 (\pm 0.004)

R_Sun 1 publication

Temperate Earth-sized planets transiting a nearby ultracool dwarf star

Metallicity [Fe/H]

0.04 (\pm 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

View all in the catalogue :

AMD-Stability Calculator for the System :

Exo3D (1 star, 7 simulable planets)

No remarks

No link

Simbad
Most recent references (ADS)

Planet TRAPPIST-1 i

Planet

Basic informations 30 parameters

Atmospheric parameters : Temperatures 0 temperatures

Atmospheric parameters : Molecules 0 molecules

Remarks No remark

Other web pages No page

Star

Basic informations 17 parameters

Planetary system 7 planets

Remarks No remark

Other web pages No page

More data 2 references

Planet TRAPPIST-1 i

Planet

Basic informations 30 parameters

Atmospheric parameters : Temperatures 0 temperatures

Atmospheric parameters : Molecules 0 molecules

Remarks No remark

Other web pages No page

Star

Basic informations 17 parameters

Planetary system 7 planets

Remarks No remark

Other web pages No page

More data 2 references

Related publications

First JWST thermal phase curves of temperate terrestrial exoplanets reveal no thick atmosphere around TRAPPIST-1 b and c

Characterizing the Near-infrared Spectra of Flares from TRAPPIST-1 During JWST Transit Spectroscopy Observations

Predicting Additional Planets in TRAPPIST-1

Predicting the Orbit of TRAPPIST-1i

On the Age of the TRAPPIST-1 System

Temperate Earth-sized planets transiting a nearby ultracool dwarf star