KELT-18b
KELT-18b is a hot Jupiter orbiting the F-type main sequence star KELT-18 approximately 1,058 light years away in the northern circumpolar constellation Ursa Major. The planet was discovered using the transit method, and was announced in June 2017.
| Discovery | |
|---|---|
| Discovery site | Winer Observatory in Sonoita, Arizona (KELTNorth) |
| Discovery date | February 6, 2017 |
| Transit | |
| Orbital characteristics | |
| 0.0455 ± 0.00069 AU (6,807,000 ± 103,000 km) | |
| Eccentricity | 0 |
| 2.87±0.00 d | |
| Inclination | 82.90°+0.62° −0.54° |
| 2,457,542.53±0.00 JD | |
| Semi-amplitude | 127±11 m/s |
| Star | KELT-18 |
| Physical characteristics | |
Mean radius | 1.57±0.04 RJ |
| Mass | 1.18±0.11 MJ |
Mean density | 380 ± 40 kg/m3 (641 ± 67 lb/cu yd) |
| Temperature | 2,085+39 −38 K |
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