(24978) 1998 HJ151 explained

Minorplanet:	yes
Background:	C2E0FF
Discovered:	28 April 1998
Alt Names:	none
Mp Category:	TNO (cubewano)^[1] ^[2]
Orbit Ref:	^[3]
Observation Arc:	3301 days (9.04 yr)
Uncertainty:	3
Epoch:	13 January 2016 (JD 2457400.5)
Semimajor:	43.43630331AU
Perihelion:	41.17981243AU
Aphelion:	45.6927942abbr=onNaNabbr=on
Eccentricity:	0.051949
Period:	286.28 yr (104563 d)
Inclination:	2.3891912°
Asc Node:	50.396457°
Arg Peri:	128.58135°
Mean Motion:	/ day
Mean Diameter:	^[4]
Abs Magnitude:	7.5

, also written as (24978) 1998 HJ151, is a cubewano. It has a perihelion (closest approach to the Sun) of 41.339 AU and an aphelion (farthest approach to the Sun) of 45.889 AU. It has a diameter of about 139 km. It was discovered on 28 April 1998, by Jane X. Luu, Chadwick A. Trujillo, David J. Tholen and David C. Jewitt.

Notes and References

1. Web site: MPEC 2009-R09 :Distant Minor Planets (2009 SEPT. 16.0 TT) . 4 September 2009 . . 2009-10-04.
2. Web site: Marc W. Buie . Marc W. Buie . 12 May 2007 . Orbit Fit and Astrometric record for 24978 . SwRI (Space Science Department) . 2009-10-04.
3. Web site: JPL Small-Body Database Browser: 24978 (1998 HJ151) . . 5 April 2016.
4. http://www.johnstonsarchive.net/astro/tnoslist.html List of known trans-Neptunian objects