(91133) 1998 HK151

From Wikipedia, the free encyclopedia
Jump to: navigation, search
(91133) 1998 HK151
Discovered by Mauna Kea Observatory
Discovery date April 28, 1998
plutino (TNO)
Orbital characteristics
Aphelion 48.995 AU
Perihelion 30.388 AU
39.691 AU
Eccentricity 0.2343
249.95 years
Inclination 5.932°
Physical characteristics
Dimensions 85-190km H
Spectral type
(Blueish;lowest TNO B-V) B-V=0.51; V-R=0.43[1]

(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.


  1. ^ "TNO Colors". Planetary Data System (PDS Asteroid/Dust Archive). 

External links[edit]