2013 FQ28

2013 FQ28
DiscoveryMPO 380708
Discovered by

first observed by:
Cerro Tololo Observatory, La Serena


Discovery date 17 March 2013
Designations
MPC designation 2013 FQ28
distant[1] · TNO[2] · cubewano · detached
Orbital characteristics [2]
Epoch 27 April 2019 (JD 2458600.5)
Uncertainty parameter 5
Observation arc 2.09 yr (764 days)
Aphelion 80.079 AU
Perihelion 45.804 AU
62.942 AU
Eccentricity 0.272
499 yr (182,135 days)
92.171°
0° 0m 7.2s / day
Inclination 25.705°
214.89°
229.49°
Physical characteristics
Dimensions 150 km[1]
24.0[3]
6.0[1]

    2013 FQ28 is a trans-Neptunian object, located in the scattered disc, the outermost region of the Solar System.[4] It orbits the Sun in a moderate inclined, moderate-eccentricity orbit. The object was discovered in March 2013.

    Discovery and naming

    2013 FQ28 was discovered on 17 March 2013. It was discovered at Cerro Tololo Observatory, La Serena.

    Orbit

    Considered a detached object,[5][6] 2013 FQ28 is particularly unusual as it has an unusually circular orbit for a scattered-disc object (SDO). Although it is thought that traditional scattered-disc objects have been ejected into their current orbits by gravitational interactions with Neptune, the low eccentricity of its orbit and the distance of its perihelion (SDOs generally have highly eccentric orbits and perihelia less than 38 AU) seems hard to reconcile with such celestial mechanics. This has led to some uncertainty as to the current theoretical understanding of the outer Solar System. The theories include close stellar passages, unseen planet/rogue planets/planetary embryos in the early Kuiper belt, and resonance interaction with an outward-migrating Neptune. The Kozai mechanism is capable of transferring orbital eccentricity to a higher inclination.[7] It is in a 3:1 resonance to Neptune. It seems to belong to the same group as (145480) 2005 TB190.

    Size

    2013 FQ28 has a diameter estimated at around 150 kilometres (93 mi), roughly a third the size of 2005 TB190 which is estimated at around 500 kilometres (310 mi), roughly a quarter the size of Pluto, and it orbits between 45 and 80 AU from the Sun.

    References

    1. 1 2 3 "2013 FQ28". Minor Planet Center. Retrieved 2018-10-12.
    2. 1 2 "JPL Small-Body Database Browser: 2013 FQ28" (2015-01-24 last obs.). Jet Propulsion Laboratory. Retrieved 28 February 2017.
    3. ↑ "AstDys 2013 FQ28 Ephemerides". Department of Mathematics, University of Pisa, Italy. Retrieved 2018-10-12.
    4. ↑ Scott. S. Sheppard; Chadwick Trujillo; David J. Tholen (2015). "Beyond the Kuiper Belt Edge: New High Perihelion Trans-Neptunian Objects With Moderate Semi-major Axes and Eccentricities". The Astrophysical Journal Letters. 825/1: L13. arXiv:1606.02294. Bibcode:2006ApJ...640L..83A. doi:10.3847/2041-8205. (Discovery paper)
    5. ↑ Jewitt, David, Morbidelli, Alessandro, & Rauer, Heike. (2007). Trans-Neptunian Objects and Comets: Saas-Fee Advanced Course 35. Swiss Society for Astrophysics and Astronomy. Berlin: Springer. ISBN 3-540-71957-1.
    6. ↑ Lykawka, Patryk Sofia & Mukai, Tadashi. (2007). Dynamical classification of trans-neptunian objects: Probing their origin, evolution, and interrelation. Icarus Volume 189, Issue 1, July, Pages 213–232. doi:10.1016/j.icarus.2007.01.001.
    7. ↑ R. L. Allen; B. Gladman (2006). "Discovery of a low-eccentricity, high-inclination Kuiper belt object at 58 AU". The Astrophysical Journal. 640: L83. arXiv:astro-ph/0512430. Bibcode:2006ApJ...640L..83A. doi:10.1086/503098. (Discovery paper)

    This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.