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(606357) 2017 UV43 is a centaur from the outer Solar System, approximately 8 kilometers (5 miles) in diameter. It was discovered by the Mount Lemmon Survey on 13 March 2005.[1] The unusual minor planet follows an orbit similar to those of the fragments of comet Shoemaker–Levy 9.[6] This minor planet was numbered (606357) by the Minor Planet Center on 27 October 2021 (M.P.C. 136418).[7] As of November 2021, it has not yet been named.[1]

(606357) 2017 UV43
Discovery[1]
Discovered byMount Lemmon Srvy.
Discovery siteMount Lemmon Obs.
Discovery date13 March 2005
Designations
MPC designation
(606357) 2017 UV43
Alternative designations
2017 UV43 · 2005 EE207
Minor planet category
Orbital characteristics[2]
Epoch 27 April 2019 (JD 2458600.5)
Uncertainty parameter 3
Observation arc12.78 yr (4,669 d)
Aphelion8.4939 AU
Perihelion4.9797 AU
Semi-major axis
6.7368 AU
Eccentricity0.2608
Orbital period (sidereal)
17.49 yr (6,387 d)
Mean anomaly
319.17°
Mean motion
0° 3m 23.04s / day
Inclination5.2004°
Longitude of ascending node
320.86°
Argument of perihelion
181.57°
Jupiter MOID0.2295 AU
TJupiter2.9600
Physical characteristics
Mean diameter
8 km[4][5]
Geometric albedo
0.09 (assumed)[4][5]
Absolute magnitude (H)
13.7[1][2]

    Description


    2017 UV43 is classified as an unusual object and centaur.[2][3][4] It was first observed by the Mount Lemmon Survey on 13 March 2005. Previously, before the identification with 2005 EE207 was made, the first observation was made on 27 October 2017 by the Pan-STARRS program at Haleakala Observatory, Hawaii, United States.[1]

    It orbits the Sun at a distance of 5.0–8.5 AU once every 17 years and 6 months (6,387 days; semi-major axis of 6.74 AU). Its orbit has an eccentricity of 0.26 and an inclination of 5° with respect to the ecliptic.[2] The body's observation arc begins with its first observation by the Mount Lemmon Survey in March 2005.[1]


    Comet Shoemaker–Levy 9


    As of December 2017, 2017 UV43 has an orbit similar to the average one of the fragments of comet Shoemaker–Levy 9 (semi-major axis: 6.81±0.04 AU , eccentricity: 0.210±0.004, inclination: 5.87°±0.08°, longitude of the ascending node: 220.8°±0.2° and argument of perihelion: 354.98°±0.05°).[6]


    References


    1. "2017 UV43". Minor Planet Center. Retrieved 19 November 2018.
    2. "JPL Small-Body Database Browser: (2017 UV43)" (2017-12-24 last obs.). Jet Propulsion Laboratory. Retrieved 19 November 2018.
    3. "List Of Other Unusual Objects". Minor Planet Center. 14 November 2018. Retrieved 19 November 2018.
    4. Johnston, Wm. Robert (7 October 2018). "List of Known Trans-Neptunian Objects". Johnston's Archive. Retrieved 19 November 2018.
    5. "Asteroid Size Estimator". CNEOS NASA/JPL. Retrieved 19 November 2018.
    6. de la Fuente Marcos, Carlos; de la Fuente Marcos, Raúl (13 December 2017). "Ghosts of Jupiter's Past: Is 2017 UV43 a Relative of Comet Shoemaker–Levy 9?". Research Notes of the AAS. 1 (1): 45. arXiv:1712.03230. Bibcode:2017RNAAS...1a..45D. doi:10.3847/2515-5172/aaa088. S2CID 118974387.
    7. "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 6 November 2021.




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