Discovery
Transit
Host star K2-21 • 2.17 R⊕ • 15.50 d orbit
Records
6
archive rows
Discovery
—
Transit
Radius
2.17 R⊕
median non-null value
Mass
—
median non-null value
K2-21
420 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.
Scale Comparison
Current adopted radius: 2.17 R⊕ • circles scaled linearly by radius
Earth
1.0 R⊕ baseline
K2-21 c
2.17 R⊕
Jupiter
11.2 R⊕ reference
Provenance
Evidence Summary
Rows
6
Refs
6
Methods
1
| Year | Method | Facility | Telescope | Period | Radius | Mass | Eq. Temp | Reference |
|---|---|---|---|---|---|---|---|---|
| 2015 | Transit | K2 | 0.95 m Kepler Telescope | 15.50 day | 1.53 Rearth | — | — | Crossfield et al. 2016 |
| 2015 | Transit | K2 | 0.95 m Kepler Telescope | 15.49 day | — | — | — | Barros et al. 2016 |
| 2015 | Transit | K2 | 0.95 m Kepler Telescope | 15.50 day | 2.49 Rearth | — | — | Dressing et al. 2017 |
| 2015 | Transit | K2 | 0.95 m Kepler Telescope | 15.50 day | 2.17 Rearth | — | — | Kruse et al. 2019 |
| 2015 | Transit | K2 | 0.95 m Kepler Telescope | 15.50 day | 1.92 Rearth | — | 420 K | Petigura et al. 2015 |
| 2015 | Transit | K2 | 0.95 m Kepler Telescope | 15.50 day | 2.29 Rearth | — | — | Vanderburg et al. 2016 |