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1923 Osiris

Asteroid

Field	Value
minorplanet	yes
name	1923 Osiris
background	#D6D6D6
discovery_ref
discovered	24 September 1960
discoverer	C. J. van Houten
I. van Houten G.
T. Gehrels
discovery_site	Palomar Obs.
mpc_name	(1923) Osiris
alt_names
1966 FR1974 KN
1974 KP1974 LE
pronounced
named_after	Osiris (Egyptian mythology)
mp_category	main-belt(inner)
Sulamitis
orbit_ref
epoch	4 September 2017 (JD 2458000.5)
uncertainty	0
observation_arc	62.70 yr (22,900 days)
aphelion	2.5900 AU
perihelion	2.2813 AU
semimajor	2.4356 AU
eccentricity	0.0634
period	3.80 yr (1,388 days)
mean_anomaly	269.38°
mean_motion	/ day
inclination	4.9580°
asc_node	353.07°
arg_peri	106.04°
dimensions	13.1 km

albedo
0.0591 ± 0.008
spectral_type	SMASS = C
abs_magnitude	13.6

I. van Houten G. T. Gehrels 1966 FR1974 KN 1974 KP1974 LE Sulamitis

0.0591 ± 0.008

1923 Osiris, provisional designation , is a dark asteroid from the inner regions of the asteroid belt, approximately 13 kilometers in diameter. It was discovered on 24 September 1960, by Ingrid and Cornelis Johannes van Houten at Leiden, on photographic plates taken by Tom Gehrels at Palomar Observatory in the United States. It was named after the Egyptian god Osiris.

Orbit and classification

Osiris orbits the Sun in the inner main-belt at a distance of 2.3–2.6 AU once every 3 years and 10 months (1,388 days). Its orbit has an eccentricity of 0.06 and an inclination of 5° with respect to the ecliptic. Due to a precovery taken at the discovering observatory in 1953, the body's observation arc is extended by 7 years prior to its official discovery observation.

Palomar–Leiden survey

The designation P–L stands for Palomar–Leiden, named after Palomar Observatory and Leiden Observatory, which collaborated on the fruitful Palomar–Leiden survey in the 1960s. Gehrels used Palomar's Samuel Oschin telescope (also known as the 48-inch Schmidt Telescope), and shipped the photographic plates to Ingrid and Cornelis Johannes van Houten at Leiden Observatory. The trio are credited with several thousand asteroid discoveries.

Physical characteristics

In the SMASS classification, Osiris is a carbonaceous C-type asteroid.

According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Osiris measures 13.461 kilometers in diameter and its surface has a low albedo of 0.031. As of 2017, no rotational lightcurve has been obtained.

Naming

This minor planet was named after Osiris, the Egyptian god of vegetation, of the waxing and waning Moon and of the annual flooding of the Nile. The official naming citation was published by the Minor Planet Center on 1 November 1979 (M.P.C. 5013).

References

"Osiris". [[Oxford University Press]].
(1 Nov 1979). "New Names of Minor Planets". [[Minor Planet Center]].

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.

sulamitis-asteroids discoveries-by-cornelis-johannes-van-houten discoveries-by-ingrid-van-houten-groeneveld discoveries-by-tom-gehrels discoveries-by-the-palomar–leiden-survey named-minor-planets c-type-asteroids-(smass) astronomical-objects-discovered-in-1960

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