(91133) 1998 HK151

Minor Planet
name =mp|(91133) 1998 HK|151
discoverer=Mauna Kea Observatory
discovery_date=April 28, 1998
designations=
category=plutino (TNO)
epoch =
semimajor = 39.691 AU
perihelion = 30.388 AU
aphelion = 48.995 AU
eccentricity = 0.2343
period = 249.95 years
inclination = 5.932°
asc_node =50.2°
arg_peri =181.3°
mean_anomaly =11.9°
speed =
dimensions = 85-190km ^{[http://neo.jpl.nasa.gov/glossary/h.html H]}
mass =
density =
gravity =
escape_velocity =
rotation =
spectral_class =(Blueish;lowest TNO B-V) B-V=0.51; V-R=0.43
abs_mag = 7.62
albedo =
temperature =

mp|(91133) 1998 HK|151 (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.

mp|1998 HK|151 has the lowest, and thus bluest measured B-V color index of any TNO. On May 24th, 2000, mp|1998 HK|151 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, mp|1998 HK|151 is estimated to be between 85 - 190km in diameter.

External links

* [http://www.johnstonsarchive.net/astro/tnoresonance.html 2:3 Resonance]

* [http://www.psi.edu/pds/asteroid/EAR_A_COMPIL_3_TNO_CEN_COLOR_V3_0/data/tnocencol.tab TNO Colors]

* [http://www.physics.nau.edu/~tegler/research/survey.htm KBO Surface Colors]

* [http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=1998HK151;orb=1;view=Far Orbital simulation] from JPL (Java) / [http://ssd.jpl.nasa.gov/horizons.cgi?find_body=1&body_group=sb&sstr=1998HK151 Ephemeris]

* [http://home.comcast.net/~kpheider/1998HK151.gifHanging with Pluto]