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1220 Crocus

Main-belt asteroid

Field	Value
minorplanet	yes
name	1220 Crocus
background	#D6D6D6
image	001220-asteroid shape model (1220) Crocus.png
caption	Shape model of Crocus from its lightcurve
discovery_ref
discovered	11 February 1932
discoverer	K. Reinmuth
discovery_site	Heidelberg Obs.
mpc_name	(1220) Crocus
alt_names	1932 CU1955 PC
pronounced
named_after	Crocus
mp_category	main-beltEos
orbit_ref
epoch	4 September 2017 (JD 2458000.5)
uncertainty	0
observation_arc	85.31 yr (31,161 days)
aphelion	3.2243 AU
perihelion	2.7807 AU
semimajor	3.0025 AU
eccentricity	0.0739
period	5.20 yr (1,900 days)
mean_anomaly	204.16°
mean_motion	/ day
inclination	11.365°
asc_node	113.34°
arg_peri	333.41°
dimensions
rotation
albedo
spectral_type	S
abs_magnitude	11.72

1220 Crocus, provisionally designated , is a stony Eoan asteroid and slow rotator from the outer regions of the asteroid belt, approximately 17 kilometers in diameter. It was discovered on 11 February 1932, by German astronomer Karl Reinmuth at Heidelberg Observatory in southwest Germany.

Orbit and classification

Crocus is a member of the Eos family, a collisional population of mostly stony composition. It orbits the Sun at a distance of 2.8–3.2 AU once every 5 years and 2 months (1,900 days). Its orbit has an eccentricity of 0.07 and an inclination of 11° with respect to the ecliptic. A

Physical characteristics

The asteroid has been characterized as a stony S-type asteroid.

In December 2014, a rotational lightcurve of Crocus was obtained from photometric observations by an international collaboration of several astronomers from Europe and the United States. Lightcurve analysis gave a long rotation period of 491 hours with a brightness variation of 1.00 magnitude ().

Naming

This minor planet was later named after the genus of flowering plants, Crocus, in the iris family.

References

{{OED. crocus

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.

eos-asteroids discoveries-by-karl-wilhelm-reinmuth named-minor-planets slow-rotating-minor-planets astronomical-objects-discovered-in-1932 minor-planets-named-after-their-provisional-designation

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