 Animation of 2014 YX49 relative to Sun and Uranus 1600-2500 2014 YX49 · Uranus · Sun | |
| Discovery[1] | |
|---|---|
| Discovered by | Mount Lemmon Survey |
| Discovery site | Mount Lemmon Obs. |
| Discovery date | November 21, 2006 |
| Designations | |
| 2014 YX49 | |
| Uranus trojancentaur[2][3] · distant[1] | |
| Orbital characteristics[2] | |
| Epoch February 16, 2017 (JD 2457800.5) | |
| Uncertainty parameter 1 | |
| Observation arc | 4876 days (13.35 yr) |
| Aphelion | 24.4207 AU (3.65328 Tm) |
| Perihelion | 13.8401 AU (2.07045 Tm) |
| 19.1304 AU (2.86187 Tm) | |
| Eccentricity | 0.276539 |
| 83.67yr (30562d) | |
| 75.587° | |
| Inclination | 25.55097° |
| 91.44425° | |
| 280.584° | |
| Earth MOID | 12.9424 AU (1.93616 Tm) |
| Jupiter MOID | 9.47006 AU (1.416701 Tm) |
| Physical characteristics | |
| 77 km (est. at0.09)[3] | |
| 21.6 | |
| 8.8 | |
(636872) 2014 YX49 (provisional designation2014 YX49) is acentaur and Uranusco-orbital, approximately 77 kilometers (48 miles) in diameter. Discovered by theMount Lemmon Survey on November 21, 2006, it is the second known centaur on atadpole orbit withUranus, and the fourth Uranus co-orbital discovered after83982 Crantor,2011 QF99 and(472651) 2015 DB216.[4]
Centaur2014 YX49 is a temporaryL4trojan 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 aL4 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 aL4 Uranian trojan,2014 YX49 is trapped in the 7:20mean motion resonance withSaturn 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.
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