2013 FT28 (original) (raw)

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Trans-Neptunian object

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. SheppardChad Trujillo
Discovery date 16 March 2013
Designations
Designation 2013 FT28
Minor planet category TNOE-SDO(detached object)
Orbital characteristics
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 4
Observation arc 1089 days (2.98 yr)
Aphelion 546 AU (barycentric)[1]
Perihelion 43.6 AU
Semi-major axis 296 AU (barycentric)[1]
Eccentricity 0.86
Orbital period (sidereal) 5051 yr (barycentric)[1]
Mean anomaly 357.15°
Inclination 17.3°
Longitude of ascending node 217.7°
Argument of perihelion 40.2°
Physical characteristics
Dimensions 100–400 km
Apparent magnitude 24.3
Absolute magnitude (H) 6.7

2013 FT28 is a trans-Neptunian object. It was discovered on 16 March 2013 at Cerro Tololo Observatory, La Serena and announced 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

  1. ^ a b c Horizons output. "Barycentric Osculating Orbital Elements for 2013 FT28". Retrieved 8 February 2017. (Ephemeris Type:Elements and Center:@0)
  2. ^ "New Solar System objects revealed". bbcnews. 30 August 2016. Retrieved 19 February 2017.
  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 (6): 221. arXiv:1608.08772. Bibcode:2016AJ....152..221S. doi:10.3847/1538-3881/152/6/221. S2CID 119187392.