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(184212) 2004 PB112

Trans-Neptunian object

Field	Value
minorplanet	yes
name	(184212)
background	#C2E0FF
discovery_ref
discoverer	M. W. Buie
discovery_site	Cerro Tololo Obs.
discovered	13 August 2004
mpc_name
alt_names
mp_category	TNOSDO
res 4:27
orbit_ref
epoch	1 July 2021 (JD 2459396.5)
uncertainty	30
observation_arc	17.07 yr (6,236 d)
aphelion	184.60 AU
perihelion	35.333 AU
semimajor	109.97 AU
eccentricity	0.6787
period	1153.20 yrs
mean_anomaly	3.0647°
mean_motion	/ day
inclination	15.403°
asc_node	356.73°
arg_peri	3.6578°
mean_diameter
abs_magnitude	7.3

res 4:27

**** (provisional designation ****) is a trans-Neptunian object from the scattered disc, approximately 154 km in diameter, and in a rare high-order orbital resonance ratio (4:27) with Neptune. It was discovered on 13 August 2004, by American astronomer Marc Buie at the Cerro Tololo Inter-American Observatory in Chile.

Orbit and classification

orbits the Sun at a distance of 35.3–184.6 AU once every 1153 years and 2 months (421,205 days; semi-major axis of 109.97 AU). Its orbit has a high eccentricity of 0.68 and an inclination of 15° with respect to the ecliptic. 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.

reached perihelion on 5 October 2011 (JD 2455839.806). It has been classified as a highly unusual 4:27 resonant trans-Neptunian object, but also simply as a scattered disc object, or SCATNEAR, respectively, by the Deep Ecliptic Survey.

Numbering and naming

This minor planet was numbered (184212) by the Minor Planet Center on 20 April 2008 (M.P.C. 62608). , it has not been named.

Physical characteristics

Based on a generic conversion from an absolute magnitude of 7.2, measures between 100 and 220 kilometer in diameter. Johnston's Archive estimates a mean diameter of 154 km assuming a typical albedo of 0.09.

References

Info: Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

scattered-disc-and-detached-objects discoveries-by-marc-buie astronomical-objects-discovered-in-2004

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