(471196) 2010 PK 66

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Asteroid
(471196) 2010 PK 66
Properties of the orbit ( animation )
Epoch:  April 27, 2019 ( JD 2,458,600.5)
Orbit type CKBO ( "Hot" )
"Distant Object"
Major semi-axis 40.936  AU
eccentricity 0.006
Perihelion - aphelion 40.69 AU - 41.181 AU
Inclination of the orbit plane 13.6 °
Length of the ascending node 331.6 °
Argument of the periapsis 299.4 °
Time of passage of the perihelion August 27, 1986
Sidereal period 261 a 10.9 M
Mean orbital velocity 4.617 km / s
Physical Properties
Medium diameter approx. 358 km
Albedo 0.08-0.09
Absolute brightness 5.3 - 5.7 mag
history
Explorer David L. Rabinowitz
Megan E. Schwamb
Suzanne W. Tourtellotte
Date of discovery August 14, 2010
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.

(471196) 2010 PK 66 is a large trans-Neptunian object in the Kuiper Belt , which is classified as Cubewano (CKBO) in terms of railway dynamics . Due to its size, the asteroid may be one of the dwarf planet candidates .

discovery

2010 PK 66 was discovered on August 14, 2010 by a team of astronomers consisting of Dave Rabinowitz , Meg Schwamb and Suzanne Tourtellotte with the 3.6 m ESO telescope at the La Silla Observatory ( Chile ) of the European Southern Observatory (ESO) discovered. The discovery was announced on September 12, 2010 together with 2010 PL 66 , the planetoid was later given the minor planet number 471196 by the IAU .

The observation arc of the asteroid begins with the official observation on August 14, 2010. Since then, the asteroid has been observed by various earth-based telescopes. In April 2017, a total of 187 observations were made over a period of 5 years. The last observation so far was carried out in July 2015 at the Pan-STARRS telescope (PS1) ( Maui ). (As of March 16, 2019)

properties

Orbit

2010 PK 66 orbits the sun in 261.91 years in an almost circular orbit between 40.69  AU and 41.18 AU from its center. The eccentricity of the orbit is 0.006, the orbit is inclined 13.63 ° with respect to the ecliptic . The planetoid is currently 40.77 AU from the sun. He last passed through perihelion in 1986, so the next perihelion should take place in 2248.

Marc Buie ( DES ) classifies the asteroid as Cubewano , whereby it belongs to the orbital dynamics “hot” classical KBO , while the Minor Planet Center does not have a specific classification; the latter classifies it as a non-SDO and generally as a “distant object” .

size

A diameter of 358 km is currently assumed, based on a reflectivity of 8% and an absolute brightness of 5.7  m . Based on this diameter, the total surface area is around 403,000 km 2 . The apparent magnitude of 2010 PK 66 is 21.83  m .

Since it is conceivable that 2010 PK 66 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 expects that it is at 2010 PK 66 to perhaps is a dwarf planet.

Provisions of the diameter for 2010 PK 66
year Dimensions km source
2018 386.0 Johnston
2018 358.0 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 471196 . SwRI (Space Science Department). Retrieved March 16, 2019.
  2. ↑ a b c Wm. R. Johnston: List of Known Trans-Neptunian Objects . Johnston's Archives. October 7, 2018. Retrieved March 16, 2019.
  3. ↑ a b c (471196) 2010 PK66 at the IAU Minor Planet Center (English) Retrieved March 16, 2019.
  4. ↑ v ≈ π * a / period (1 + sqrt (1-e²))
  5. ↑ MPC : MPEC 2010-R88: 2010 PK66, 2010 PL66 . IAU . September 12, 2010. Accessed March 16, 2019.
  6. ↑ MPC : MPC / MPO / MPS Archive . IAU . Retrieved March 16, 2019.
  7. ↑ (471196) 2010 PK66 in the Small-Body Database of the Jet Propulsion Laboratory (English). Retrieved March 16, 2019. Template: JPL Small-Body Database Browser / Maintenance / Alt
  8. ↑ MPC : MPEC 2010-S44: Distant Minor Planets (2010 OCT.11.0 TT) . IAU . September 25, 2010. Accessed March 16, 2019.
  9. ↑ MPC : MPEC List Of Centaurs and Scattered-Disk Objects . IAU . Retrieved March 16, 2019.
  10. ↑ (471196) 2010 PK66 in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
  11. ↑ a b Mike Brown : How many dwarf planets are there in the outer solar system? . CalTech . November 12, 2018. Retrieved March 16, 2019.