(24978) 1998 HJ151

(24978) 1998 HJ₁₅₁
Discovery
Discovered by	Jane X. Luu, Chadwick A. Trujillo, David J. Tholen, and David C. Jewitt
Discovery date	28 April 1998
Designations
Alternative designations	none
Minor planet category	TNO (cubewano)
Orbital characteristics
	Epoch 13 January 2016 (JD 2457400.5)
	Uncertainty parameter 3
Observation arc	3301 days (9.04 yr)
Aphelion	45.69279420 AU (6.835544719 Tm)
Perihelion	41.17981243 AU (6.160412255 Tm)
Semi-major axis	43.43630331 AU (6.497978486 Tm)
Eccentricity	0.051949
Orbital period (sidereal)	286.28 yr (104563 d)
Mean anomaly	68.772637°
Mean motion	0° 0m 12.394s / day
Inclination	2.3891912°
Longitude of ascending node	50.396457°
Argument of perihelion	128.58135°
Physical characteristics
Mean diameter	139 km
Absolute magnitude (H)	7.5

(24978) 1998 HJ₁₅₁, 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.

^ "MPEC 2009-R09 :Distant Minor Planets (2009 SEPT. 16.0 TT)". IAU Minor Planet Center. 4 September 2009. Retrieved 4 October 2009.
^ Marc W. Buie (12 May 2007). "Orbit Fit and Astrometric record for 24978". SwRI (Space Science Department). Retrieved 4 October 2009.
^ "JPL Small-Body Database Browser: 24978 (1998 HJ151)". NASA/Jet Propulsion Laboratory. Retrieved 5 April 2016.
^ List of known trans-Neptunian objects

[MPEC_2009-R09-1] "MPEC 2009-R09 :Distant Minor Planets (2009 SEPT. 16.0 TT)". IAU Minor Planet Center. 4 September 2009. Retrieved 4 October 2009.

[Buie-2] Marc W. Buie (12 May 2007). "Orbit Fit and Astrometric record for 24978". SwRI (Space Science Department). Retrieved 4 October 2009.

[jpldata-3] "JPL Small-Body Database Browser: 24978 (1998 HJ151)". NASA/Jet Propulsion Laboratory. Retrieved 5 April 2016.

[4] List of known trans-Neptunian objects

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