Discovery
Transit
Host star TRAPPIST-1 • 0.79 R⊕ • 4.05 d orbit
Records
5
archive rows
Discovery
—
Transit
Radius
0.79 R⊕
median non-null value
Mass
0.39 M⊕
median non-null value
TRAPPIST-1
286.2 K equilibrium
Quick Summary
This first pass still reads from the currently available detail payload. Canonical adopted summaries will replace first-row values in the next backend pass.
Host Star
TRAPPIST-1
Discovery
Transit
Year
2016
Period
4.05 day
Radius
0.77 Rearth
Mass
0.41 Mearth
Eq. Temp
288 K
Scale Comparison
Current adopted radius: 0.79 R⊕ • circles scaled linearly by radius
Earth
1.0 R⊕ baseline
TRAPPIST-1 d
0.79 R⊕
Jupiter
11.2 R⊕ reference
Provenance
Evidence Summary
Rows
5
Refs
5
Methods
1
| Year | Method | Facility | Telescope | Period | Radius | Mass | Eq. Temp | Reference |
|---|---|---|---|---|---|---|---|---|
| 2016 | Transit | La Silla Observatory | 0.60 m Transiting Planets and Planetesimals Small Telescope | 4.05 day | 0.77 Rearth | 0.41 Mearth | 288 K | Gillon et al. 2017 |
| 2016 | Transit | La Silla Observatory | 0.60 m Transiting Planets and Planetesimals Small Telescope | — | 0.78 Rearth | 0.30 Mearth | — | Grimm et al. 2018 |
| 2016 | Transit | La Silla Observatory | 0.60 m Transiting Planets and Planetesimals Small Telescope | 4.05 day | — | — | 286.2 K | Ducrot et al. 2020 |
| 2016 | Transit | La Silla Observatory | 0.60 m Transiting Planets and Planetesimals Small Telescope | 4.05 day | 0.80 Rearth | 0.39 Mearth | 286 K | Piaulet-Ghorayeb et al. 2025 |
| 2016 | Transit | La Silla Observatory | 0.60 m Transiting Planets and Planetesimals Small Telescope | 4.05 day | 0.79 Rearth | 0.39 Mearth | — | Agol et al. 2021 |