(469987) 2006 HJ123

(469987) 2006 HJ₁₂₃
Discovery
Discovered by	Marc W. Buie
Discovery date	27 April 2006
Designations
Alternative designations	2006 HJ123
Minor planet category	TNO (plutino)
Orbital characteristics
	Epoch 13 January 2016 (JD 2457400.5)
	Uncertainty parameter 3
Observation arc	1838 days (5.03 yr)
\|{{{apsis}}}\|helion}}	51.444 astronomical unit\|AU (7.6959 Tm)
\|{{{apsis}}}\|helion}}	27.626 AU (4.1328 Tm)
Semi-major axis	39.535 AU (5.9144 Tm)
Eccentricity	0.30123
Orbital period	248.59 yr (90798.1 d)
Mean anomaly	309.05°
Mean motion	0° 0m 14.273s /day
Inclination	12.433°
Longitude of ascending node	222.53°
\|{{{apsis}}}\|helion}}	≈ 26 April 2051; ±1 days
\|{{{apsis}}}\|helion}}	101.59°
Earth MOID	26.636 AU (3.9847 Tm)
Jupiter MOID	22.7401 AU (3.40187 Tm)
Physical characteristics
Dimensions	283.1+142.3−110.8 km
Geometric albedo	0.136+0.308−0.089
Physics	~44 K
Absolute magnitude (H)	5.32 ± 0.66, 5.7

2006 HJ₁₂₃ (also written 2006 HJ123) is a trans-Neptunian object (TNO). It was discovered in 2006 by Marc W. Buie. The object is a plutino (in 2:3 resonance with Neptune).^[2]

Physical properties

The size of 2006 HJ₁₂₃ was measured by the Herschel Space Telescope to be 283+142−111 km.^[5]

References

↑ "List Of Transneptunian Objects". IAU Minor Planet Center. http://www.minorplanetcenter.org/iau/lists/TNOs.html.
↑ ^2.0 ^2.1 Marsden, Brian G. (2006-06-11). "MPEC 2006-L50 : 2006 HF123, 2006 HG123, 2006 HH123, 2006 HJ123". IAU Minor Planet Center. Harvard-Smithsonian Center for Astrophysics. https://www.minorplanetcenter.net/iau/mpec/K06/K06L50.html.
↑ JPL Horizons Observer Location: @sun (Perihelion occurs when deldot changes from negative to positive. Uncertainty in time of perihelion is 3-sigma.)
↑ ^4.0 ^4.1 "JPL Small-Body Database Browser: (2006 HJ123)". https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=3335755.
↑ ^5.0 ^5.1 ^5.2 ^5.3 Mommert, Michael; Harris, A. W.; Kiss, C.; Pál, A.; Santos-Sanz, P.; Stansberry, J.; Delsanti, A.; Vilenius, E. et al. (May 2012). "TNOs are cool: A survey of the trans-Neptunian region—V. Physical characterization of 18 Plutinos using Herschel-PACS observations". Astronomy & Astrophysics 541: A93. doi:10.1051/0004-6361/201118562. Bibcode: 2012A&A...541A..93M.

External links

(469987) 2006 HJ123 at AstDyS-2, Asteroids—Dynamic Site
- Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
(469987) 2006 HJ123 at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

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[mpclist-1] "List Of Transneptunian Objects". IAU Minor Planet Center. http://www.minorplanetcenter.org/iau/lists/TNOs.html.

[MPEC2003-L50-2] 2.0 ^2.1 Marsden, Brian G. (2006-06-11). "MPEC 2006-L50 : 2006 HF123, 2006 HG123, 2006 HH123, 2006 HJ123". IAU Minor Planet Center. Harvard-Smithsonian Center for Astrophysics. https://www.minorplanetcenter.net/iau/mpec/K06/K06L50.html.

[perihelion-3] JPL Horizons Observer Location: @sun (Perihelion occurs when deldot changes from negative to positive. Uncertainty in time of perihelion is 3-sigma.)

[jpldata-4] 4.0 ^4.1 "JPL Small-Body Database Browser: (2006 HJ123)". https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=3335755.

[Herschel-5] 5.0 ^5.1 ^5.2 ^5.3 Mommert, Michael; Harris, A. W.; Kiss, C.; Pál, A.; Santos-Sanz, P.; Stansberry, J.; Delsanti, A.; Vilenius, E. et al. (May 2012). "TNOs are cool: A survey of the trans-Neptunian region—V. Physical characterization of 18 Plutinos using Herschel-PACS observations". Astronomy & Astrophysics 541: A93. doi:10.1051/0004-6361/201118562. Bibcode: 2012A&A...541A..93M.

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(469987) 2006 HJ123

Topic: Astronomy

Physical properties

References

External links