(184212) 2004 PB112

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(184212) 2004 PB112
Discovery [1][2]
Discovered by M. W. Buie
Discovery site Cerro Tololo Obs.
Discovery date 13 August 2004
Designations
MPC designation (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[edit]

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[edit]

Based on a generic conversion from an absolute magnitude of 7.2, 2004 PB112 measures between 100 and 220 kilometer in diameter.[4]

Naming[edit]

As of 2017, this minor planet remains unnamed.[2]

References[edit]

  1. ^ 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. 
  2. ^ a b c d "184212 (2004 PB112)". Minor Planet Center. Retrieved 24 April 2017. 
  3. ^ a b Brett Gladman; Brian G. Marsden; Christa VanLaerhoven. "Nomenclature in the Outer Solar System" (PDF) (PDF). Retrieved 24 April 2017. 
  4. ^ a b "Absolute Magnitudes (H) – generic diameter conversion". NASA/JPL. Retrieved 24 April 2017. 
  5. ^ "AstDys-2 (184212) 2004 PB112)". Retrieved 24 April 2017. 

External links[edit]