(145452) 2005 RN43
From Wikipedia, the free encyclopedia
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Discovery
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| Discovered by | A. C. Becker, A. W. Puckett, and J. Kubica[1] |
| Discovery date | September 10, 2005 |
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Designations
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| MPC designation | (145452) 2005 RN43 |
| Alternate name(s) | none |
| Minor planet category |
TNO Cubewano[2][3] Extended (DES)[4] |
| Epoch 20 070 410 | |
| Aphelion | 42.547 AU |
| Perihelion | 40.631 AU |
| Semi-major axis | 41.589 AU |
| Eccentricity | 0.023 |
| Orbital period | 97 760.8 days (267.6 years) |
| Average orbital speed | ? |
| Mean anomaly | 335.9° |
| Inclination | 19.3° |
| Longitude of ascending node | 186.9° |
| Argument of perihelion | 165.2° |
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Physical characteristics
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| Dimensions | 730 km (assumed)[5] |
| Mass | ? |
| Mean density | ? |
| Equatorial surface gravity | ? |
| Escape velocity | ? |
| Sidereal rotation period |
? |
| Albedo | ? |
| Temperature | ? |
| Spectral type | ? |
| Apparent magnitude | 20.1[6] |
| Absolute magnitude (H) | 3.9[2] |
(145452) 2005 RN43, also written as (145452) 2005 RN43, is a very likely dwarf planet orbiting in the Kuiper belt. It was discovered by Andrew C. Becker, Andrew W. Puckett, and Jeremy M. Kubica on September 10, 2005 at Apache Point Observatory in Sunspot, New Mexico.
Mike Brown's automatically updated website lists it as a highly likely dwarf planet, but the diameter of the object has never been measured.[7]
[edit] Classification
The Minor Planet Center (MPC) classifies it as a cubewano.[3] But since this object has an inclination of 19.3°, and it is unknown how it acquired this moderate inclination, the Deep Ecliptic Survey (DES) classifies it as scattered-extended.[4]
It has been observed 119 times over 13 oppositions with precovery images back to 1954.[2]
[edit] References
- ^ List Of Transneptunian Objects
- ^ a b c d "JPL Small-Body Database Browser: 145452 (2005 RN43)". 2006-11-02 last obs. http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=145452. Retrieved 2009-08-28.
- ^ a b "MPEC 2009-R09 :Distant Minor Planets (2009 September 16.0 TT)". IAU Minor Planet Center. 2009-09-04. http://www.minorplanetcenter.org/mpec/K09/K09R09.html. Retrieved 2010-01-08.
- ^ a b Marc W. Buie (2008-08-09 using 220 of 221 observations). "Orbit Fit and Astrometric record for 145452". SwRI (Space Science Department). http://www.boulder.swri.edu/~buie/kbo/astrom/145452.html. Retrieved 2009-10-04.
- ^ Wm. Robert Johnston. "List of Known Trans-Neptunian Objects". Johnston's Archive. http://www.johnstonsarchive.net/astro/tnoslist.html. Retrieved 2009-08-28.
- ^ "AstDys (145452) 2005RN43 Ephemerides". Department of Mathematics, University of Pisa, Italy. http://hamilton.dm.unipi.it/astdys/index.php?pc=1.1.3.0&n=145452. Retrieved 2009-12-07.
- ^ Michael E. Brown. "How many dwarf planets are there in the outer solar system? (updates daily)". California Institute of Technology. http://www.gps.caltech.edu/~mbrown/dps.html. Retrieved 2011-08-25.
[edit] External links
- Orbital simulation from JPL (Java) / Horizons Ephemeris
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