(636872) 2014 YX49 (provisional designation 2014 YX49) is a centaur and Uranus co-orbital, approximately 77 kilometers (48 miles) in diameter. Discovered by the Mount Lemmon Survey on November 21, 2006, it is the second known centaur on a tadpole orbit with Uranus, and the fourth Uranus co-orbital discovered after 83982 Crantor, 2011 QF99 and (472651) 2015 DB216.[4]

Description

Centaur 2014 YX49 is a temporary L4 trojan of Uranus, the second one (2011 QF99 was identified first) to be confirmed as currently trapped in such a resonant state. This object may have remained as a L4 Uranian Trojan for about 60,000 years and it can continue that way for another 80,000 years. Numerical integrations suggest that it may stay within Uranus' co-orbital zone for nearly one million years.[4]

Besides being a L4 Uranian trojan, 2014 YX49 is trapped in the 7:20 mean motion resonance with Saturn as well; therefore, this minor body is currently subjected to a three-body resonance.[4] The other known Uranian trojan, 2011 QF99, is also in this resonant configuration.

See also

References

  1. ^ a b "2014 YX49 - Minor Planet Center". Minor Planet Center. International Astronomical Union. Retrieved January 20, 2017.
  2. ^ a b "JPL Small Body Database Browser". JPL (2015-01-28 last obs.). NASA. Retrieved January 20, 2017.
  3. ^ a b Johnston, Wm. Robert (August 18, 2020). "List of Known Trans-Neptunian Objects". Johnston's Archive. Retrieved August 12, 2021.
  4. ^ a b c de la Fuente Marcos, Carlos; de la Fuente Marcos, Raúl (May 15, 2017). "Asteroid 2014 YX49: a large transient Trojan of Uranus". Monthly Notices of the Royal Astronomical Society. 467 (2): 1561–1568. arXiv:1701.05541. Bibcode:2017MNRAS.467.1561D. doi:10.1093/mnras/stx197.
Allikas: https://en.wikipedia.org/wiki/2014_YX49
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