(469987) 2006 HJ123

Last updated

(469987) 2006 HJ123
Discovery [1]
Discovered by Marc W. Buie
Discovery date27 April 2006
Designations
2006 HJ123
TNO (plutino) [2]
Orbital characteristics [3]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 3
Observation arc 1838 days (5.03 yr)
Aphelion 51.444  AU (7.6959  Tm)
Perihelion 27.626 AU (4.1328 Tm)
39.535 AU (5.9144 Tm)
Eccentricity 0.30123
248.59 yr (90798.1 d)
309.05°
0° 0m 14.273s /day
Inclination 12.433°
222.53°
≈ 26 April 2051 [4]
±1 days
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 [5]
0.136+0.308
−0.089 [5]
Temperature ~44 K
5.32 ± 0.66, [5] 5.7 [3]

    (469987) 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]

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

    References

    1. ↑ "List Of Transneptunian Objects". IAU Minor Planet Center . Retrieved 14 May 2012.
    2. 1 2 Marsden, Brian G. (11 June 2006). "MPEC 2006-L50 : 2006 HF123, 2006 HG123, 2006 HH123, 2006 HJ123". IAU Minor Planet Center. Harvard-Smithsonian Center for Astrophysics. Retrieved 14 May 2012.
    3. 1 2 "JPL Small-Body Database Browser: (2006 HJ123)" (2012-05-14 last obs). Retrieved 30 March 2016.
    4. ↑ JPL Horizons Observer Location: @sun (Perihelion occurs when deldot changes from negative to positive. Uncertainty in time of perihelion is 3-sigma.)
    5. 1 2 3 4 Mommert, Michael; Harris, A. W.; Kiss, C.; Pál, A.; Santos-Sanz, P.; Stansberry, J.; Delsanti, A.; Vilenius, E.; Müller, T. G.; Peixinho, N.; Lellouch, E.; Szalai, N.; Henry, F.; Duffard, R.; Fornasier, S.; Hartogh, P.; Mueller, M.; Ortiz, J. L.; Protopapa, S.; Rengel, M.; Thirouin, A. (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. arXiv: 1202.3657 . Bibcode:2012A&A...541A..93M. doi:10.1051/0004-6361/201118562.


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