(91133) 1998 HK151

(91133) 1998 HK151
Discovery
Discovered by Mauna Kea Observatory
Discovery date 28 April 1998
Designations
plutino (TNO)
Orbital characteristics[1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 3
Observation arc 1178 days (3.23 yr)
Aphelion 48.529 AU (7.2598 Tm)
Perihelion 30.347 AU (4.5398 Tm)
39.438 AU (5.8998 Tm)
Eccentricity 0.23052
247.67 yr (90462.3 d)
25.159°
0° 0m 14.327s / day
Inclination 5.9365°
50.194°
180.55°
Earth MOID 29.3356 AU (4.38854 Tm)
Jupiter MOID 24.9381 AU (3.73069 Tm)
Jupiter Tisserand parameter 5.461
Physical characteristics
Dimensions 85-190km H
(Blueish;lowest TNO B-V) B-V=0.51; V-R=0.43[2]
7.6

    (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

    1. ↑ "91133 (1998 HK151)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 8 April 2016.
    2. ↑ "TNO Colors". Planetary Data System (PDS Asteroid/Dust Archive).


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