(184212) 2004 PB112
| Discovery [1][2] | |
|---|---|
| Discovered by | M. W. Buie |
| Discovery site | Cerro Tololo Obs. |
| Discovery date | 13 August 2004 |
| Designations | |
| (184212) 2004 PB112 | |
| 2004 PB112 | |
| TNO [1] · SDO 4:27 resonance[3] | |
| Orbital characteristics [1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 3 | |
| Observation arc | 8.18 yr (2,986 days) |
| Aphelion | 177.38 AU |
| Perihelion | 35.329 AU |
| 106.35 AU | |
| Eccentricity | 0.6678 |
| 1096.82 yr (400,612 days) | |
| 1.9877° | |
| 0° 0m 3.24s / day | |
| Inclination | 15.454° |
| 356.81° | |
| 3.5097° | |
| Physical characteristics | |
| Dimensions | 100–220 km[4] |
| 7.2[5] · 7.3[1] | |
(184212) 2004 PB112, provisional designation 2004 PB112, is a resonant trans-Neptunian object from the scattered disc, with a semi-major axis of approximately 110 AU and in a rare orbital resonance ratio with Neptune. It was discovered on 13 August 2004, by American astronomer Marc Buie at the Cerro Tololo Inter-American Observatory in Chile.[2]
Orbit and classification
2004 PB112 orbits the Sun at a distance of 35.3–177.4 AU once every 1096 years and 10 months (400,612 days). Its orbit has an eccentricity of 0.67 and an inclination of 15° with respect to the ecliptic.[1] A first precovery was taken at Cerro Tololo in 2000, extending the body's observation arc by 4 years prior to its official discovery observation.[2]
2004 PB112 reached perihelion on 5 October 2011 (JD 2455839.806).[1] It is a 4:27 resonant trans-Neptunian object.[3]: 49
Physical characteristics
Based on a generic conversion from an absolute magnitude of 7.2, 2004 PB112 measures between 100 and 220 kilometer in diameter.[4]
Numbering and naming
This minor planet was numbered by the Minor Planet Center on 20 April 2008.[6] As of 2018, it has not been named.[2]
References
- ^ a b c d e f "JPL Small-Body Database Browser: 184212 (2004 PB112)" (2008-10-30 last obs.). Jet Propulsion Laboratory. Retrieved 1 June 2017.
- ^ a b c d "184212 (2004 PB112)". Minor Planet Center. Retrieved 24 April 2017.
- ^ a b Brett Gladman; Brian G. Marsden; Christa VanLaerhoven. "Nomenclature in the Outer Solar System" (PDF) (PDF). Retrieved 24 April 2017.
- ^ a b "Absolute Magnitudes (H) – generic diameter conversion". NASA/JPL. Retrieved 24 April 2017.
- ^ "AstDys-2 (184212) 2004 PB112)". Retrieved 24 April 2017.
- ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 24 February 2018.
External links
- Asteroid Lightcurve Database (LCDB), query form (info)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (180001)-(185000) – Minor Planet Center
- (184212) 2004 PB112 at the JPL Small-Body Database