Английская Википедия:2500 Alascattalo

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2500 Alascattalo, provisional designation Шаблон:Mp, is a stony Flora asteroid from the inner regions of the asteroid belt, approximately 8 kilometers in diameter.

The asteroid was discovered on 2 April 1926, by German astronomer Karl Reinmuth at Heidelberg Observatory in southern Germany. It was later named for the fictional moose–walrus Alascattalo creature.

Orbit and classification

Alascattalo is a member of the Flora family, one of the largest groups of stony asteroids in the main-belt. It orbits the Sun in the inner main-belt at a distance of 2.0–2.5 AU once every 3 years and 4 months (1,225 days). Its orbit has an eccentricity of 0.10 and an inclination of 7° with respect to the ecliptic. No precoveries were obtained prior to its discovery.

Physical characteristics

Alascattalo has been characterized as a common, stony S-type asteroid.

Rotation period

A rotational lightcurve of this asteroid was obtained from photometric observations made by Junda Liu at the Lvye Observatory (Шаблон:Small), China, and at the iTelescope Observatory (Шаблон:Small), at the Siding Spring Observatory site, Australia, in December 2015. The lightcurve gave a well-defined rotation period of Шаблон:Val hours with a brightness variation of 0.19 in magnitude (Шаблон:Small).

A previous lightcurve with a concurring period of Шаблон:Val hours and a similar amplitude of 0.15 was already obtained by French amateur astronomer Pierre Antonini in March 2013 (Шаблон:Small).

Diameter and albedo

According to the survey carried out by the NEOWISE mission of NASA's space-based Wide-field Infrared Survey Explorer, Alascattalo measures 7.5 and 7.9 kilometers in diameter and its surface has an albedo of 0.21 and 0.27, respectively, while the Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – which derives from 8 Flora, the largest member and namesake of this orbital family – and calculates a diameter of 8.2 kilometers with an absolute magnitude of 12.6.

Naming

This minor planet was named after the mythological creature "Alascattalo", a fictional chimera between a moose and a walrus.

According to legend, it was genetically bred by miners during the Klondike Gold Rush in the late 19th century. The alascattalo also stands for the local people's unique sense of humor, dealing with tourists who ask naive questions, and is the mascot of the four-minute long, annual parade on "Alascattalo Day" held in November. The official naming citation was published by the Minor Planet Center on 21 November 1991 (Шаблон:Small).

External links

• 21 November 2011 - Alascattalo Day
• Asteroid Lightcurve Database (LCDB), query form (info Шаблон:Webarchive)
• Dictionary of Minor Planet Names, Google books
• Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
• Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
• Шаблон:AstDys
• Шаблон:JPL small body