KELT-21b
| Discovery | |
|---|---|
| Discovered by | Marshall Johnson et al. |
| Discovery site | KELT |
| Discovery date | 2018 |
| Transit method | |
| Orbital characteristics | |
| 0.05224 AU (7,815,000 km) | |
| 3.6127647 d | |
| Inclination | 86.46 |
| Star | KELT-21 A (HD 332124) |
| Physical characteristics | |
| 1.586 RJ | |
| Mass | <3.91 MJ |
Mean density | <1.24 g cm−3 |
| Temperature | 2,051 K (1,778 °C; 3,232 °F) |
KELT-21b is an extrasolar planet discovered in 2017. It is a hot Jupiter with radius of about 1.586 MJ.