(542258) 2013 AP 183

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Asteroid
2013 AP 183
Properties of the orbit ( animation )
Epoch:  April 27, 2019 ( JD 2,458,600.5)
Orbit type RKBO 3: 8 or
SDO ,
"Distant Object"
Major semi-axis 57,557  AU
eccentricity 0.367
Perihelion - aphelion 36.439 AU - 78.675 AU
Inclination of the orbit plane 3.3 °
Length of the ascending node 193.3 °
Argument of the periapsis 216.3 °
Time of passage of the perihelion May 5, 1965
Sidereal period 436 a 8.0 M
Mean orbital velocity 3.894 km / s
Physical Properties
Medium diameter approx. 373 km
Albedo 0.08-0.09
Absolute brightness 5.6 likes
history
Explorer Pan-STARRS :
B. Gibson
T. Goggia
N. Primak
A. Schultz
M. Willman
Date of discovery January 10, 2013
Source: Unless otherwise stated, the data comes from JPL Small-Body Database Browser . The affiliation to an asteroid family is automatically determined from the AstDyS-2 database . Please also note the note on asteroid items.

2013 AP 183 is a large trans-Neptunian object that is classified as a resonant Kuiper belt object (3: 8 resonance) or as a scattered disk object (SDO). Due to its size, the asteroid may be one of the dwarf planet candidates .

discovery

2013 AP 183 was discovered on January 10, 2013 by a team of astronomers consisting of B. Gibson, T. Goggia, N. Primak, A. Schultz and M. Willman with the 1.8 m Pan-STARRS telescope (PS1 ) discovered at Haleakalā Observatory ( Maui ). The discovery was announced on July 17, 2016.

After its discovery, AP 183 could be identified on photos up to January 25, 2003, which were taken as part of the Sloan Digital Sky Survey program (SDSS) at the Apache Point Observatory ( New Mexico ), thus reversing its observation period Extend ten years to calculate its orbit more accurately. Since then, the planetoid has been observed through various earth-based telescopes. In December 2018, there were a total of 123 observations over a period of 16 years. The last observation so far was again carried out in March 2018 at the Pan-STARRS telescope (PS1). (As of March 14, 2019)

properties

Orbit

2013 AP 183 orbits the sun in 436.67 years in an elliptical orbit between 36.44 AU and 78.68  AU from its center. The orbit eccentricity is 0.367, the orbit is 3.33 ° inclined to the ecliptic . Currently, the planetoid is 48.02 AU from the sun. He last passed through perihelion in 1965, so the next perihelion is likely to take place in 2402.

Marc Buie ( DES ) classifies the planetoid as RKBO ( 3: 8 resonance with Neptune ), while the Minor Planet Center classifies it as SDO ; the latter also generally lists it as a “distant object” .

size

A diameter of 373 km is currently assumed, based on a reflectivity of 8% and an absolute brightness of 5.6  m . Based on this diameter, the total area is around 437,000 km². The apparent magnitude of 2013 AP 183 is 22.39  m .

Since it is conceivable that 2013 AP 183 is in hydrostatic equilibrium due to its size and could therefore be largely round, it may meet the criteria for classification as a dwarf planet . Mike Brown believes that it is in 2013 AP 183 to perhaps is a dwarf planet.

Provisions of the diameter for 2013 AP 183
year Dimensions km source
2018 404.0 Johnston
2018 373.0 Brown
The most precise determination is marked in bold .

See also

Web links

Individual evidence

  1. ^ A b Marc W. Buie : Orbit Fit and Astrometric record for 13AP183 . SwRI (Space Science Department). Retrieved March 14, 2019.
  2. ^ A b Wm. R. Johnston: List of Known Trans-Neptunian Objects . Johnston's Archives. October 7, 2018. Retrieved March 14, 2019.
  3. ↑ a b MPC : MPEC List Of Centaurs and Scattered-Disk Objects . IAU . Retrieved March 14, 2019.
  4. ↑ a b c (542258) 2013 AP183 at the IAU Minor Planet Center (English) Retrieved March 14, 2019.
  5. ↑ v ≈ π * a / period (1 + sqrt (1-e²))
  6. ↑ MPC : MPEC 2016-0187: 2013 AP183 . IAU . July 17, 2016. Retrieved March 14, 2019.
  7. ↑ (542258) 2013 AP183 in the Small-Body Database of the Jet Propulsion Laboratory (English). Retrieved March 14, 2019. Template: JPL Small-Body Database Browser / Maintenance / Alt
  8. ↑ (542258) 2013 AP183 in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
  9. ↑ a b Mike Brown : How many dwarf planets are there in the outer solar system? . CalTech . November 12, 2018. Retrieved March 14, 2019.