Exoplanet CatalogExoplanet KELT-21 b
Radius17.78 R⊕Earth = 1
Mass1,242.7 M⊕Earth = 1
Orbital period3.61 d
Equilibrium temp.2,051 K≈ 1,778 °C
Distance1,535.8 ly
Discovered2018Transit
Size compared (radius, Earth = 1)
1.00
3.88
11.21
17.78
Where it sits among all planets (percentile)
99%
91%
19%
98%
58%
Share of planets with a smaller value (of 6,445 planets, where known).
Planets of KELT-21 (1)
| Planet | Period (d) | Radius (R⊕) | Mass (M⊕) | Eq. temp K | Year |
|---|---|---|---|---|---|
| KELT-21 b | 3.61 | 17.78 | 1,242.7 | 2,051 | 2018 |
| Host star | Spectral type | Teff K | Radius (R☉) | Mass (M☉) |
|---|---|---|---|---|
| KELT-21 | A8 V | 7,598 | 1.64 | 1.46 |
Values are NASA Exoplanet Archive estimates and may change. Equilibrium temperature is a theoretical value ignoring any atmosphere.