2013 FT28

2013 FT28
The orbit of 2013 FT28 (right side in light blue, click image to enlarge) and other extreme detached objects, along with the hypothetical Planet Nine's orbit on the right
Discovery
Discovered by Scott S. Sheppard and Chad Trujillo
Discovery date March 16, 2013
Designations
MPC designation 2013 FT28
TNO · E-SDO
(detached object)
Orbital characteristics
Epoch 2016-July-31.0 (JD 2457600.5)
Uncertainty parameter 4
Observation arc 1089 days (2.98 yr)
Aphelion 546 AU (barycentric)[1]
580 AU
Perihelion 43.6 AU
295 AU (barycentric)[1]
312 AU
Eccentricity 0.86
5051 yr (barycentric)[1]
5460 yr (89370.137 d)
357.15°
Inclination 17.3 °
217.7°
40.2°
Physical characteristics
Dimensions 100–400 km
24.3
6.7

    2013 FT28 is a trans-Neptunian object. The existence of the TNO was discovered on March 16, 2013 at Cerro Tololo Observatory, La Serena and revealed on 30 August 2016.[2]

    2013 FT28 is the first high semi-major axis, high perihelion extreme trans-Neptunian object that is anti-aligned with the other known extreme trans-Neptunian objects such as Sedna and 2012 VP113, i.e. its longitude of perihelion differs by 180° from other objects. The orbit of 2013 FT28 appears stable though simulations showed that it may have some resonant interaction with the known giant planets.[3]

    Its argument of perihelion is similar to that of another TNO, 2015 KG163.

    Closeup of current position near perihelion, passing downward from the upper left of this view

    References

    1. 1 2 3 Horizons output. "Barycentric Osculating Orbital Elements for 2013 FT28". Retrieved 2017-02-08. (Ephemeris Type:Elements and Center:@0)
    2. ↑ "New Solar System objects revealed". bbcnews. 30 August 2016. Retrieved 2017-02-19.
    3. ↑ Sheppard, Scott S.; Trujillo, Chadwick (2016). "New Extreme Trans-Neptunian Objects: Towards a Super-Earth in the Outer Solar System". The Astronomical Journal. 155: 221. arXiv:1608.08772. Bibcode:2016AJ....152..221S. doi:10.3847/1538-3881/152/6/221.


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