2010 concentration camp 39
Asteroid 2010 concentration camp 39 |
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Properties of the orbit ( animation ) | |
Orbit type | DO or RKBO 6:11 or Cubewano («Heiss»), «Distant Object» |
Major semi-axis | 45,556 AU |
eccentricity | 0.055 |
Perihelion - aphelion | 43.053 AU - 48.06 AU |
Inclination of the orbit plane | 26 ° |
Length of the ascending node | 53.1 ° |
Argument of the periapsis | 309.9 ° |
Time of passage of the perihelion | May 28, 2062 |
Sidereal period | 307 a 5.9 M |
Mean orbital velocity | 4.42 km / s |
Physical Properties | |
Medium diameter | approx. 574 km |
Albedo | 0.09 |
Absolute brightness | 4.03 ± 0.01 mag |
history | |
Explorer |
Andrzej Udalski Scott S. Sheppard Michał K. Szymański Chadwick A. Trujillo |
Date of discovery | May 21, 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. |
2010 KZ 39 is a large trans-Neptunian object , which is classified as either detached object , resonant KBO ( 6:11 resonance), cubewano and more generally as a "distant object" . Because of its size, the asteroid is a dwarf planet candidate .
discovery
2010 KZ 39 was discovered on May 21, 2010 by a Polish-American team of astronomers consisting of Andrzej Udalski , Scott Sheppard , Michał Krzysztof Szymański and Chad Trujillo with the 1.3 m telescope of the University of Warsaw at the Las Campanas Observatory ( Chile ) discovered. The discovery was announced on June 8, 2010.
The asteroid's observation sheet begins with the official discovery observation in May 2010. In April 2017, there were only 28 observations over a period of just under two years. The last observation so far was carried out in March 2012 - also at the Las Campanas Observatory. (As of February 5, 2019)
properties
Orbit
2010 KZ 39 orbits the sun in 307.49 years on a slightly elliptical orbit between 43.05 AU and 48.06 AU from its center. The orbit eccentricity is 0.055, the orbit is 26.03 ° inclined to the ecliptic . The planetoid is currently 46.01 AU from the Sun and 46.52 AU from Earth . The next time it passes through perihelion in 2102, the last perihelion should have been in 1794.
The Minor Planet Center listed it as a Cubewano and now generally as a “Distant Object” , whereas Marc Buie ( DES ) classifies the planetoid as an extended SDO (ESDO or DO ); It is possible that the planetoid is in a 6:11 resonance with Neptune, but this requires further observation, as the orbital parameters known so far are still too uncertain.
size
A diameter of around 574 km is currently assumed, based on a reflectivity of 9% and an absolute brightness of 4.5 m . Since the reflectivity could not yet be determined, sizes from 420 to 940 km would also be possible, assuming albedo values between 0.25 and 0.05. The apparent brightness of 2010 KZ 39 is 20.75 m .
Since it can be assumed that 2010 concentration camp 39 is in hydrostatic equilibrium due to its size and must therefore be largely round, it should meet the criteria for classification as a dwarf planet . Mike Brown assumes that 2010 concentration camp 39 is probably a dwarf planet.
year | Dimensions km | source |
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2005 | 666.04 | LightCurve DataBase |
2018 | 702.0 | Johnston |
2018 | 574.0 | Brown |
The most precise determination is marked in bold . |
See also
- List of trans-Neptunian objects
- List of dwarf planets of the solar system
- List of asteroids
- List of moons from asteroids
Web links
- How many dwarf planets are there in the outer solar system? Current list of the largest TNOs from Mike Brown
- Free the dwarf planets! Mike Brown's column on the IAU and the dwarf planets regarding their classifications (23 August 2011)
Individual evidence
- ^ A b Marc W. Buie : Orbit Fit and Astrometric record for 10KZ39 . SwRI (Space Science Department). Retrieved February 5, 2019.
- ↑ a b c S. Benecchi, Scott S. Sheppard : Light Curves of 32 Large Transneptunian Objects (PDF) . In: The Astronomical Journal . 145, No. 5, January 24, 2013, p. 124, 19. arxiv : 1301.5791 . bibcode : 2013AJ .... 145..124B . doi : 10.1088 / 0004-6256 / 145/5/124 .
- ↑ a b c 2010 KZ39 at the IAU Minor Planet Center (English)
- ↑ v ≈ π * a / period (1 + sqrt (1-e²))
- ↑ MPC : MPEC 2010-L38: 2010 KZ39 . IAU . June 8, 2010. Retrieved February 5, 2019.
- ↑ 2010 KZ39 in the Small-Body Database of the Jet Propulsion Laboratory (English). Retrieved February 5, 2019.
- ^ Conversion of Absolute Magnitude to Diameter for Minor Planets , calculator from Stephen F. Austin State University
- ↑ 2010 KZ39 in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- ↑ a b Mike Brown : How many dwarf planets are there in the outer solar system? . CalTech . November 12, 2018. Retrieved February 5, 2019.
- ↑ LCDB Data for 2010 KZ39 . MinorPlanetInfo. May 2013. Retrieved February 5, 2019.
- ^ Wm. R. Johnston: List of Known Trans-Neptunian Objects . Johnston's Archives. October 7, 2018. Retrieved February 5, 2019.