(543354) 2014 AN55

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(543354) 2014 AN55
Discovery
Perihelion
34.256 AU
55.920 AU
Eccentricity0.3874
418.18 yr (152,739 d)
317.05°
0° 0m 8.64s / day
Inclination9.4372°
283.94°
≈ 8 March 2070[4]
±1.5 days
307.63°
Physical characteristics
Mean diameter
583 km (est.)[5]
671 km (est.)[3][6]
0.09 (assumed)[3]
0.10 (assumed)[5]
4.1[1][2]
4.3[7]

(543354) 2014 AN55 (

Haleakala Observatory on the island of Maui, Hawaii, in the United States.[1]

Orbit and classification

2014 AN55 belongs to the gravitationally perturbed population of

scattered disc objects,[3] which, at their closest approaches, come close to Neptune's orbit at 30 AU
, but their farthest distances reach many times of that.

It orbits the Sun at a distance of 34.3–77.6 

semi-major axis of 55.92 AU). Its orbit has an eccentricity of 0.39 and an inclination of 9° with respect to the ecliptic.[2] The body's observation arc begins with its first observation taken by the Sloan Digital Sky Survey on 12 March 2005.[1]

Numbering and naming

This

M.P.C. 121072) and has not yet received a name.[8]

Physical characteristics

Diameter and albedo

Using an

albedo in the range of 0.05 to 0.25, the object's mean-diameter may be as low as 370, and as high as 820 kilometers.[6] Johnstons's Archive assumes a similar albedo of 0.9 and calculates a diameter of 671 kilometers using an absolute magnitude of 4.1.[3][6]

References

  1. ^ a b c d e f "(543354) 2014 AN55". Minor Planet Center. Retrieved 2 March 2020.
  2. ^ a b c d e "JPL Small-Body Database Browser: 543354 (2014 AN55)" (2020-01-22 last obs.). Jet Propulsion Laboratory. Retrieved 2 March 2020.
  3. ^ a b c d e Johnston, Wm. Robert (30 December 2017). "List of Known Trans-Neptunian Objects". Johnston's Archive. Retrieved 2 March 2020.
  4. 3-sigma
    .)
  5. ^ a b Michael E. Brown. "How many dwarf planets are there in the outer solar system?". California Institute of Technology. Retrieved 2 March 2020.
  6. ^ a b c "Asteroid Size Estimator". CNEOS NASA/JPL. Retrieved 2 March 2020.
  7. ^ a b "(543354) 2014AN55 – Summary". AstDyS-2, Asteroids – Dynamic Site. Retrieved 2 March 2020.
  8. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 2 March 2020.

External links


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