2013_VZ70

<span class="nowrap">2013 VZ<sub>70</sub></span>

2013 VZ70

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2013 VZ70 is a centaur on a horseshoe co-orbital configuration with Saturn.[6][7] It was first observed on 1 November 2013 by the Outer Solar System Origins Survey at Mauna Kea Observatory in Hawaii, United States.[1] The discovery was announced on 23 August 2021.[2]

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2013 VZ70 is the first minor planet ever discovered in a horseshoe orbit with respect to Saturn.[3][6][7] It orbits the Sun at a distance of 8.3–10.0 AU once every 27 years and 8 months (10,102 days; semi-major axis of 9.15 AU). Its orbit has an eccentricity of 0.09 and an inclination of 12° with respect to the ecliptic.[4] Based on a generic magnitude-to-diameter conversion, assuming an albedo of 0.09, 2013 VZ70 measures approximately 7.9 kilometers (4.9 miles) in diameter for an absolute magnitude of 13.74.[4][5]

The object may have an origin among the trans-Neptunian population.[6] However, an analysis of its orbit within the context of those of the known satellites of Saturn suggests that 2013 VZ70 could be related to the Inuit group; on the other hand, the mutual nodal distances of 2013 VZ70 and the moons Fornjot and Thrymr are below the first percentile of the distribution.[7]

References

  1. [1]
    "2013 VZ70". Minor Planet Center. International Astronomical Union. Retrieved 24 August 2021.
  2. [2]
    "MPEC 2021-Q55 : 2013 VZ70". Minor Planet Electronic Circular. Minor Planet Center. 23 August 2021. Retrieved 24 August 2021.
  3. [3]
    Alexandersen, M.; Greenstreet, S.; Gladman, B.; Bannister, M.; Chen, Y.; Gwyn, S.; et al. (October 2020). The first known Saturnian Horseshoe Coorbital and the distribution of Temporary Coorbitals of the Giant Planets. Division of Planetary Science meeting #52. Bulletin of the American Astronomical Society. Bibcode:2020DPS....5220606A. 206.06. Retrieved 24 August 2021.
  4. [4]
    "JPL Small-Body Database Browser: (2013 VZ70)" (2016-03-12 last obs.). Jet Propulsion Laboratory. Retrieved 24 August 2021.
  5. [5]
    "Asteroid Size Estimator". CNEOS NASA/JPL. Retrieved 1 September 2021.
  6. [6]
    Alexandersen, Mike; Greenstreet, Sarah; Gladman, Brett J.; Bannister, Michele T.; Chen, Ying-Tung; Gwyn, Stephen D. J.; Kavelaars, J.J.; Petit, Jean-Marc; Volk, Kathryn; Lehner, Matthew J.; Wang, Shiang-Yu (2021). "OSSOS. XXIII. 2013 VZ70 and the Temporary Coorbitals of the Giant Planets". The Planetary Science Journal. 2 (1): 212. arXiv:2110.09627. Bibcode:2021PSJ.....2..212A. doi:10.3847/PSJ/ac1c6b. S2CID 238755438.
  7. [7]
    de la Fuente Marcos, C.; de la Fuente Marcos, R. (10 January 2022). "Centaur 2013 VZ70: Debris from Saturn's irregular moon population?". Astronomy & Astrophysics. 657 (1): A59 (10 pp). arXiv:2110.04264. Bibcode:2022A&A...657A..59D. doi:10.1051/0004-6361/202142166. S2CID 238856647.
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