Английская Википедия:827 Wolfiana
Шаблон:Use dmy dates Шаблон:Infobox planet
827 Wolfiana, provisional designation Шаблон:Mp, is a Florian asteroid from the inner regions of the asteroid belt, approximately 8 kilometers in diameter. It was discovered at Vienna Observatory on 29 August 1916, by Austrian astronomer Johann Palisa, who named it after German astronomer Max Wolf.[1][2] The assumed stony asteroid has a rotation period of 4.0654 hours.
Orbit and classification
Wolfiana is a member of the Flora family (Шаблон:Small),[3][4] a giant asteroid family and the largest family of stony asteroids in the main belt.[5]Шаблон:Rp It orbits the Sun in the inner asteroid belt at a distance of 1.9–2.6 AU once every 3 years and 5 months (1,253 days; semi-major axis of 2.27 AU). Its orbit has an eccentricity of 0.16 and an inclination of 3° with respect to the ecliptic.[6] The body's observation arc begins with its official discovery observation at Vienna.[2]
Physical characteristics
Wolfiana is an assumed stony S-type asteroid,[3] which agrees with the overall spectral type for Florian asteroids.[5]Шаблон:Rp
Rotation period
In September 2012, a rotational lightcurve of Wolfiana was obtained from photometric observations by American astronomers Luis Martinez, Arizona, and Frederick Pilcher at Organ Mesa Observatory (Шаблон:Small), New Mexico. Lightcurve analysis gave a well-defined rotation period of 4.0654 hours with a brightness amplitude of 0.20 magnitude (Шаблон:Small),[7] refining a period of 4.0 hours previously measured in November 2009 (Шаблон:Small).[8]
Diameter and albedo
According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Wolfiana measures 8.488 and 8.976 kilometers in diameter and its surface has an albedo of 0.129 and 0.1153, respectively.[9][10]
The Collaborative Asteroid Lightcurve Link assumes a standard albedo of 0.24 – derived from 8 Flora, the parent body of the Flora family – and calculates a diameter of 6.51 kilometers based on an absolute magnitude of 13.1.[3]
Naming
This minor planet was named by the discoverer in 1920 (Шаблон:Small) after German astronomer, colleague and friend, Max Wolf (1863–1932), a professor of astronomy at Heidelberg University and founder and director of the Heidelberg-Königstuhl State Observatory, who discovered several novae, comets and 248 minor planets.[1]
The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (Шаблон:Small). Asteroid 1217 Maximiliana and the lunar crater Wolf were also named in his honor.[1]
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:Minor planets navigator Шаблон:Small Solar System bodies Шаблон:Authority control
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