Английская Википедия:1500 Jyväskylä
1500 Jyväskylä (Шаблон:IPA), provisional designation Шаблон:Mp, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 7 kilometers in diameter. It was discovered on 16 October 1938, by Finnish astronomer Yrjö Väisälä at the Turku Observatory in Southwest Finland.[1] It was named for the Finnish town Jyväskylä.[2]
Classification and orbit
Jyväskylä is a member of the Flora family, a large collisional group of stony asteroids. It orbits the Sun in the inner main-belt at a distance of 1.8–2.7 AU once every 3 years and 4 months (1,227 days). Its orbit has an eccentricity of 0.19 and an inclination of 7° with respect to the ecliptic.[3] The body's observation arc begins at Turku, 3 weeks prior to its official discovery observation.[1]
Physical characteristics
In 2016, a modeled lightcurve was derived from data contained in the Lowell photometric database. Light-curve analysis gave it a rotation period of 8.8275 hours and a spin axis of (123°, −75.0°) in ecliptic coordinates (Шаблон:Small).[4]
According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, the asteroid measures between 7.39 and 8.095 kilometers in diameter, and its surface has an albedo between 0.161 and 0.31.[5][6][7] The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – derived from 8 Flora, the largest member and namesake of this family – and calculates a diameter of 6.63 kilometers, using an absolute magnitude of 13.06.[8]
Naming
This minor planet was named for the Finnish town Jyväskylä.[2] It is the largest city in the region of Central Finland and on the Finnish Lakeland. The official Шаблон:MoMP was published by the Minor Planet Center on 20 February 1976 (Шаблон:Small).[9]
References
External links
- 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
Шаблон:Use dmy dates Шаблон:Minor planets navigator Шаблон:Small Solar System bodies
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- Английская Википедия
- Flora asteroids
- Discoveries by Yrjö Väisälä
- Named minor planets
- S-type asteroids (Tholen)
- Astronomical objects discovered in 1938
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- Википедия
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