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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[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.
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]
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