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KELT-9 b
Sign in to saveKELT-9b, also designated HD 195689 b, 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 June 2017, it is the hottest known exoplanet.
Key facts
- Planet.name
- KELT-9b
- Planet.image
- Artist's_impression_of_KELT-9b_orbiting_KELT-9.jpg
- Planet.caption
- Artist's impression of KELT-9b and its parent star
- Planet.apsis
- astron
- Planet.semimajor
- AU
- Planet.period
- 1.4811235 d
- Planet.star
- HD 195689 A
- Planet.mass
- 2.17
- Planet.single_temperature
- K
- Planet.albedo
- <0.14
via Wikipedia infobox
Article
5 sectionsContents
- Host star
- Physical properties
- See also
- References
- External links
KELT-9b, also designated HD 195689 b, 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 June 2017, it is the hottest known exoplanet.
== Host star == The host star, KELT-9, also designated HD 195689, is 2.3 times larger and 2.4 times more massive than the sun. The surface temperature is , unusually hot for a star with a transiting planet. Prior to the discovery of KELT-9b, only six A-type stars were known to have planets, of which the warmest, WASP-33, is significantly cooler at ; no B-type stars were previously known to host planets. KELT-9, classified as B9.5-A0 could be the first B-type star known to have a planet. KELT-9b occupies a circular but strongly inclined orbit a mere 0.03462 AU from KELT-9 with an orbital period of less than 1.5 days.