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3554 Amun

Aten asteroid

Field	Value
minorplanet	yes
background	#FFC2E0
name	3554 Amun
image	Amun Sept 9 2012.PNG
caption	Orbit diagram of asteroid Amun with location as of September 9, 2012
discoverer	C. Shoemaker
E. M. Shoemaker
discovered	4 March 1986
mpc_name	(3554) Amun
alt_names	1986 EB
named_after	Amun
mp_category	Aten
Venus-crosser asteroid
orbit_ref
epoch	13 January 2016 (JD 2457400.5)
observation_arc	10923 days (29.91 yr)
uncertainty	0
semimajor	0.973675 AU
perihelion	0.700578 AU
aphelion	1.24677 AU
eccentricity	0.28048
period	350.9 days
inclination	23.3626°
asc_node	358.627°
arg_peri	359.392°
mean_motion	1.02585°/day
mean_anomaly	184.781°
moid	0.250204 AU
mean_diameter	3.341 km
mass
rotation	2.53001 h
albedo	0.1284
spectral_type	M-type asteroid
abs_magnitude	15.82

E. M. Shoemaker Venus-crosser asteroid

3554 Amun is an Aten asteroid, meaning it crosses Earth's orbit, and a Venus-crosser. It was discovered on 4 March 1986 by Carolyn and Eugene Shoemaker at Mount Palomar Observatory, and named for the ancient Egyptian deity Amun. Amun was the fifth Aten asteroid to be numbered.

Photometric observations of 3554 Amun during 2017–2018 were combined to determine a rotation period of 2.53029 hours. It has been classified as an M-type asteroid in the Tholen taxonomy, X-type in the Bus taxonomy, and C-, X-, and D-type in the Bus-DeMeo taxonomy. The featureless optical spectrum has a similar slope to the Tagish Lake meteorite, although 3554 Amun is not considered the source. The infrared spectrum of 3554 Amun was found to match a D-type asteroid taxonomy. The estimated diameter is 3.341 kilometers, making it one of the smallest known asteroids to have an M-type classification.

Amun was once considered metallic, based on an M-type optical spectrum. In Mining the Sky, planetary scientist John S. Lewis calculated the purported value of a metallic 3554 Amun at $20 trillion. (6178) 1986 DA is another M-type near-Earth asteroid with lower inclination that is actually metallic.

Amun passes close to Venus, and in 1964, 2034, and 2103 comes within 10 million km of it.

References

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References

"NSS Review: Mining the Sky".

Info: Wikipedia Source

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