(469333) 2000 PE 30

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Asteroid
(469333) 2000 PE 30
Properties of the orbit ( animation )
Epoch:  April 27, 2019 ( JD 2,458,600.5)
Orbit type SDO ,
"Distant Object"
Major semi-axis 54.726  AU
eccentricity 0.347
Perihelion - aphelion 35.725 AU - 73.727 AU
Inclination of the orbit plane 18.4 °
Length of the ascending node 127.3 °
Argument of the periapsis 147.8 °
Time of passage of the perihelion September 16, 1985
Sidereal period 404 a 10.3 M
Mean orbital velocity 3.993 km / s
Physical Properties
Medium diameter approx. 375 km
Albedo 0.04-0.09
Absolute brightness 5.9 - 6.2 mag
history
Explorer Matthew J. Holman
Date of discovery August 5, 2000
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.

(469333) 2000 PE 30 is a large Trans-Neptunian object that is classified as a Scattered Disk Object (SDO) in terms of orbit dynamics . Due to its size, the asteroid may be one of the dwarf planet candidates .

discovery

2000 PE 30 was on August 5, 2000 by Matthew Holman at the Mauna Kea Observatories ( Hawaii discovered). The discovery was announced on July 20, 2001 together with Bienor , 1998 KY 61 and 2000 OJ 67 , the planetoid was later given the minor planet number 469333 by the IAU .

The observation sheet of the asteroid begins with the official discovery observation on August 5, 2000. In April 2017, a total of 146 observations were made over a period of 15 years. The last observation so far was carried out in July 2015 on the Pan-STARRS telescope (PS1). (As of March 11, 2019)

properties

Orbit

2000 PE 30 orbits the sun in 404.86 years in an elliptical orbit between 35.73  AU and 73.73 AU from its center. The orbital eccentricity is 0.347, the orbit is 18.38 ° inclined to the ecliptic . The planetoid is currently 40.94 AU from the sun. He last passed through perihelion in 1985, so the next perihelion should take place in 2390.

Both Marc Buie ( DES ) and the Minor Planet Center classify the planetoid as SDO ; the latter also generally lists it as a "distant object".

size

A diameter of 375 km is currently assumed, based on a reflectivity of 4% and an absolute brightness of 6.2  m . Based on this diameter, the total surface area is around 442,000 km². The apparent brightness of 2000 PE 30 is 22.34  m .

Since it is conceivable that 2000 PE 30 is in hydrostatic equilibrium due to its size and could thus be largely round, it may meet the criteria for classification as a dwarf planet . Mike Brown expects that it is at 2000 PE 30 to perhaps is a dwarf planet.

2000 PE 30 seems to have a bluish (neutral) color, which is why the albedo is assumed to be comparatively low.

Determination of the diameter for 2000 PE 30
year Dimensions km source
2018 293.0 Johnston
2018 375.0 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 469333 . SwRI (Space Science Department). Retrieved March 11, 2019.
  2. ↑ a b MPC : MPEC List Of Centaurs and Scattered-Disk Objects . IAU . Retrieved March 11, 2019.
  3. ↑ a b MPC : MPEC 2010-S44: Distant Minor Planets (2010 OCT.11.0 TT) . IAU . September 25, 2010. Accessed March 11, 2019.
  4. ↑ a b c (469333) 2000 PE30 at the IAU Minor Planet Center (English) Retrieved March 11, 2019.
  5. ↑ v ≈ π * a / period (1 + sqrt (1-e²))
  6. ↑ MPC : MPEC 2001-O12: 1998 KY61, 2000 OJ67, 2000 PE30, 2000 QC243 . IAU . July 20, 2001. Retrieved March 11, 2019.
  7. ↑ MPC : MPC / MPO / MPS Archive . IAU . Retrieved March 11, 2019.
  8. ↑ (469333) 2000 PE30 in the Small-Body Database of the Jet Propulsion Laboratory (English). Retrieved March 11, 2019. Template: JPL Small-Body Database Browser / Maintenance / Alt
  9. ^ A b Wm. R. Johnston: List of Known Trans-Neptunian Objects . Johnston's Archives. October 7, 2018. Retrieved March 11, 2019.
  10. ↑ (469333) 2000 PE30 in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
  11. ↑ a b c Mike Brown : How many dwarf planets are there in the outer solar system? . CalTech . November 12, 2018. Retrieved March 11, 2019.