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(91133) 1998 HK151

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Discovery date  28 April 1998
Aphelion  48.529 AU (7.2598 Tm)
Semi-major axis  39.438 AU (5.8998 Tm)
Discovered  28 April 1998
Orbits  Sun
Discovery site  Mauna Kea Observatories
Observation arc  1178 days (3.23 yr)
Perihelion  30.347 AU (4.5398 Tm)
Eccentricity  0.23052
Absolute magnitude  7.6
Discovered by  Mauna Kea Observatories
People also search for  (69990) 1998 WU31
Minor planet category  Plutino (Trans-Neptunian object)

(91133) 1998 HK151 (better known as 1998 HK151) is a plutino with a 2:3 resonance with Neptune. It was discovered on April 28, 1998, by the Mauna Kea Observatory.

1998 HK151 has the lowest, and thus bluest measured B-V color index of any TNO. On May 24, 2000, 1998 HK151 set a TNO record low B-V of 0.51. Reddening of the spectrum is caused by cosmic irradiaton by ultraviolet radiation and charged particles. Becoming bluer in the spectrum is caused by impact collisions exposing the interior of an object.

Based on an absolute magnitude (H) of 7.62, 1998 HK151 is estimated to be between 85 – 190 km in diameter.

References

(91133) 1998 HK151 Wikipedia


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