Английская Википедия:1106 Cydonia
1106 Cydonia (Шаблон:IPAc-en), provisional designation Шаблон:Mp, is a Eunomian asteroid from the central regions of the asteroid belt, approximately Шаблон:Convert in diameter. It was discovered on 5 February 1929, by astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in Germany.[1] The asteroid was named for the fruit-bearing tree Cydonia (quince).[2] The S-type asteroid has a relatively short rotation period of 2.7 hours.[3]
Orbit and classification
Cydonia is a member of the Eunomia family (Шаблон:Small),[3][4] a prominent family of stony asteroids and the largest one in the intermediate main belt with more than 5,000 members.[5] It orbits the Sun in the central asteroid belt at a distance of 2.3–2.9 AU once every 4 years and 2 months (1,528 days; semi-major axis 2.60 AU). Its orbit has an eccentricity of 0.13 and an inclination of 13° with respect to the ecliptic.[6] The body's observation arc begins with its first and official discovery observation at Heidelberg in February 1929.[1]
Physical characteristics
In the SMASS classification, Cydonia is a stony S-type asteroid,[6][3] in-line with the Eunomia family's overall spectral type.[5]Шаблон:Rp
Rotation period
In December 2015, a rotational lightcurve of Cydonia was obtained from photometric observations by astronomers at the Etscorn Observatory (Шаблон:Small) in New Mexico, United States. Lightcurve analysis gave a well-defined rotation period of 2.679 hours with a brightness variation of 0.28 magnitude (Шаблон:Small).[7] In April 2017, Spanish astronomers at Puçol Observatory (Шаблон:Small) and other stations of the APTOG-network measured a similar period of 2.6700 hours and an amplitude of 0.10 magnitude (Шаблон:Small).[8]
Diameter and albedo
According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Cydonia measures between 12.140 and 12.95 kilometers in diameter and its surface has an albedo between 0.1719 and 0.241.[9][10][11]
The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.21 – derived from 15 Eunomia, the family's parent body and namesake – and calculates a diameter of 13.26 kilometers based on an absolute magnitude of 11.7.[3]
Naming
This minor planet was named after the genus Cydonia in the family Rosaceae, with the fruit-bearing quince tree as its only member. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (Шаблон:Small).[2]
Reinmuth's flowers
Due to his many discoveries, Karl Reinmuth submitted a large list of 66 newly named asteroids in the early 1930s. The list covered his discoveries with numbers between Шаблон:MoMP and Шаблон:MoMP. This list also contained a sequence of 28 asteroids, starting with 1054 Forsytia, that were all named after plants, in particular flowering plants (also see list of minor planets named after animals and plants).[12]
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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- Discoveries by Karl Wilhelm Reinmuth
- Named minor planets
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- Astronomical objects discovered in 1929
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