KELT-9b
KELT-9b is an exoplanet and ultra-hot Jupiter that orbits the late B-type/early A-type star KELT-9, located about 670 light-years from Earth. Detected using the Kilodegree Extremely Little Telescope, the discovery of KELT-9b was announced in 2016. As of October 2022, it is the hottest known exoplanet.
Artist's impression of KELT-9b and its parent star | |
| Orbital characteristics | |
|---|---|
| 0.03462+0.00110 −0.00093 AU | |
| 1.4811235±0.0000011 d | |
| Inclination | 86.79±0.25 |
| Star | HD 195689 |
| Physical characteristics | |
Mean radius | 1.891+0.061 −0.053 RJ |
| Mass | 2.17±0.56 MJ |
Mean density | 530±0.15 kg m−3 |
| Albedo | <0.007 |
| Temperature | 4050±180 K |
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