Английская Википедия:795 Fini

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Шаблон:Use dmy dates Шаблон:Infobox planet

795 Fini (prov. designation: Шаблон:Mp or Шаблон:Mp) is a dark and large background asteroid, approximately Шаблон:Convert in diameter, located in the central region of the asteroid belt. It was discovered by Austrian astronomer Johann Palisa at the Vienna Observatory on 26 September 1914.[1] The carbonaceous C-type asteroid has a poorly determined rotation period of 9.3 hours and seems rather spherical in shape. Any reference of the asteroid's name to a person is unknown.[2]

Orbit and classification

Fini is a non-family asteroid of the main belt's background population when applying the hierarchical clustering method to its proper orbital elements.[3][4] It orbits the Sun in the central main-belt at a distance of 2.5–3.0 AU once every 4 years and 7 months (1,665 days; semi-major axis of 2.75 AU). Its orbit has an eccentricity of 0.10 and an inclination of 19° with respect to the ecliptic.[5] The body's observation arc begins at Vienna Observatory on 16 March 1917, where it was officially discovered two and a half years before.[1]

Naming

"Fini" is an Austrian diminutive of Josephine. Any reference of this minor planetШаблон:'s name to a person or occurrence is unknown.[2]

Unknown meaning

Among the many thousands of named minor planets, Fini is one of 120 asteroids for which no official naming citation has been published. All of these asteroids have low numbers, the first being Шаблон:Mp. The last asteroid with a name of unknown meaning is Шаблон:Mp. They were discovered between 1876 and the 1930s, predominantly by astronomers Auguste Charlois, Johann Palisa, Max Wolf and Karl Reinmuth.[6]

Physical characteristics

In the Tholen classification, Fini is a common, carbonaceous C-type asteroid.[5] It is also a C-type in the taxonomic classification based on near-infrared colors from the MOVIS-catalog, which was created from data gathered by the VISTA Hemisphere Survey conducted with the VISTA telescope at Paranal Observatory in Chile.[7]

Rotation period

Several rotational lightcurves of Fini have been obtained from photometric observations.[8] However, the asteroid, which shows a notably low brightness variation – indicative of a spherical rather than elongated shape – still has a poorly determined rotation period.Шаблон:Efn

Based on observations from February 2003 and November 2011, Brian Warner at his Palmer Divide Observatory Шаблон:Obscode in Colorado, determined three possible period solutions of Шаблон:Val, Шаблон:Val and Шаблон:Val hours with corresponding low amplitudes of Шаблон:Val, Шаблон:Val and Шаблон:Val magnitude (Шаблон:Small).[9][10]Шаблон:Efn Petr Pravec and Peter Kušnirák at Ondřejov Observatory derive a rotation period of Шаблон:Val hours from their observations in October 2001, or half of Warner's period solution, also with an amplitude of 0.2 magnitude (Шаблон:Small).Шаблон:Efn In September 2010, astronomers at the Palomar Transient Factory in California determined an alternative period of Шаблон:Val with a brightness variation of 0.06 magnitude (Шаблон:Small).[11]

Diameter and albedo

According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer (WISE), and the Japanese Akari satellite, Fini measures (Шаблон:Val), (Шаблон:Val) and (Шаблон:Val) kilometers in diameter and its surface has an albedo of (Шаблон:Val), (Шаблон:Val) and (Шаблон:Val), respectively.[12][13][14] The Collaborative Asteroid Lightcurve Link adopts Petr Pravec's revised WISE-data,[15] that is an albedo of 0.0553 and a diameter of 62.56 kilometers based on an absolute magnitude of 9.78.[8] Alternative mean-diameter measurements published by the WISE team include (Шаблон:Val), (Шаблон:Val), (Шаблон:Val), (Шаблон:Val) and (Шаблон:Val) with corresponding albedos of (Шаблон:Val), (Шаблон:Val), (Шаблон:Val), (Шаблон:Val) and (Шаблон:Val).[4][8] On 11 November 2006, an asteroid occultation of Fini gave a best-fit ellipse dimension of (Шаблон:Val) with a low quality rating of 1. These timed observations are taken when the asteroid passes in front of a distant star.[4]

Notes

Шаблон:Notelist

References

Шаблон:Reflist

External links

Шаблон:Minor planets navigator Шаблон:Small Solar System bodies Шаблон:Authority control

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  1. ↑ 1,0 1,1 Ошибка цитирования Неверный тег <ref>; для сносок MPC-object не указан текст
  2. ↑ 2,0 2,1 Ошибка цитирования Неверный тег <ref>; для сносок springer не указан текст
  3. ↑ Ошибка цитирования Неверный тег <ref>; для сносок AstDys-object не указан текст
  4. ↑ 4,0 4,1 4,2 Ошибка цитирования Неверный тег <ref>; для сносок Ferret не указан текст
  5. ↑ 5,0 5,1 Ошибка цитирования Неверный тег <ref>; для сносок jpldata не указан текст
  6. ↑ Ошибка цитирования Неверный тег <ref>; для сносок DOMPN-unknown не указан текст
  7. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Popescu-2018b не указан текст
  8. ↑ 8,0 8,1 8,2 Ошибка цитирования Неверный тег <ref>; для сносок lcdb не указан текст
  9. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Warner-2011i не указан текст
  10. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Warner-2003c не указан текст
  11. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Waszczak-2015 не указан текст
  12. ↑ Ошибка цитирования Неверный тег <ref>; для сносок SIMPS не указан текст
  13. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Mainzer-2016 не указан текст
  14. ↑ Ошибка цитирования Неверный тег <ref>; для сносок AKARI не указан текст
  15. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Pravec-2012b не указан текст
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