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13058 Alfredstevens

Main-belt asteroid

Field	Value
minorplanet	yes
name	13058 Alfredstevens
background	#D6D6D6
discovery_ref
discovered	19 November 1990
discoverer	E. W. Elst
discovery_site	La Silla Obs.
mpc_name	(13058) Alfredstevens
alt_names

named_after	Alfred Stevens
(Belgian painter)
mp_category	main-beltVesta
orbit_ref
epoch	4 September 2017 (JD 2458000.5)
uncertainty	0
observation_arc	26.45 yr (9,662 days)
aphelion	2.6314 AU
perihelion	2.0871 AU
semimajor	2.3593 AU
eccentricity	0.1154
period	3.62 yr (1,324 days)
mean_anomaly	154.40°
mean_motion	/ day
inclination	6.1063°
asc_node	197.09°
arg_peri	214.67°
dimensions	km
3.06 km (calculated)
rotation	h
albedo	0.20 (assumed)

spectral_type	S
abs_magnitude	14.514.7 (R)14.93

(Belgian painter) 3.06 km (calculated)

13058 Alfredstevens, provisional designation , is a stony Vestian asteroid from the inner regions of the asteroid belt, approximately 3 kilometers in diameter. It was discovered by Belgian astronomer Eric Elst at ESO's La Silla Observatory in Northern Chile, on 19 November 1990. The asteroid was named for Belgian painter Alfred Stevens.

Orbit and classification

Based on its orbital elements, Alfredstevens is a member of the Vesta family, a group of asteroids that originated from a massive impact on the Southern Hemnisphere of 4 Vesta, the family's namesake. It orbits the Sun in the inner main-belt at a distance of 2.1–2.6 AU once every 3 years and 7 months (1,324 days). Its orbit has an eccentricity of 0.12 and an inclination of 6° with respect to the ecliptic.

The body's observation arc begins just five days prior to its official discovery observation, with a precovery taken at Palomar Observatory on 14 November 1990.

Physical characteristics

Lightcurves

In January 2013, a rotational lightcurve of Alfredstevens was obtained from photometric observations in the R-band by astronomers at the Palomar Transient Factory in California. Lightcurve analysis gave a rotation period of hours with a brightness variation of 0.45 magnitude ().

Diameter and albedo

According to the survey carried out by the NEOWISE mission of NASA's space-based Wide-field Infrared Survey Explorer, Alfredstevens measures 2.6 kilometers in diameter and its surface has a high albedo of 0.34, while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a larger diameter of 3.1 kilometers with an absolute magnitude of 14.93.

Naming

This minor planet was named in honor of Belgian painter Alfred Stevens (1823–1906), known for his paintings of elegant modern women. The official naming citation was published by the Minor Planet Center on 30 January 2010 (M.P.C. 68446).

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.

vesta-asteroids discoveries-by-eric-walter-elst named-minor-planets astronomical-objects-discovered-in-1990

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