Английская Википедия:910 Anneliese

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Шаблон:Use dmy dates Шаблон:Infobox planet

910 Anneliese (prov. designation: Шаблон:Mp or Шаблон:Mp) is a dark background asteroid, approximately Шаблон:Convert in diameter, located in the outer regions of the asteroid belt. It was discovered on 1 March 1919, by astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in southwest Germany.[1] The carbonaceous C-type asteroid (Ch) has a rotation period of 11.3 hours and is likely spherical in shape. It was named by German astronomer Julius Dick after his friend "Anneliese".[2]

Orbit and classification

Anneliese 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 outer asteroid belt at a distance of 2.5–3.4 AU once every 5.00 years (1,828 days; semi-major axis of 2.93 AU). Its orbit has an eccentricity of 0.15 and an inclination of 9° with respect to the ecliptic.[5] The body's observation arc begins at Heidelberg Observatory on 19 March 1919, or 18 days after its official discovery observation.[1]

Naming

This minor planet was named after "Anneliese", an acquaintance of the German astronomer Julius Dick from the Babelsberg Observatory, who suggested the asteroid's name. The Шаблон:MoMP was also mentioned in The Names of the Minor Planets by Paul Herget in 1955 (Шаблон:Small).[2]

Physical characteristics

In the Bus–Binzel SMASS classification, Anneliese is a hydrated carbonaceous C-type asteroid (Ch).[5][4]

Rotation period

In June 2015, a rotational lightcurve of Anneliese was obtained from photometric observations by Uruguayan astronomer Eduardo Álvarez at the Los Algarrobos Observatory Шаблон:Obscode. Lightcurve analysis gave a well-defined rotation period of Шаблон:Val hours with a brightness variation of Шаблон:Val magnitude, indicative of a spherical, non-elongated shape (Шаблон:Small). At the time Anneliese was one of only 17 three-digit numbered asteroids for which no period was published.[6] In May 2015, Julian Oey at the Blue Mountains Observatory Шаблон:Obscode, Australia, determined a concurring period of Шаблон:Val hours with an amplitude of Шаблон:Val magnitude (Шаблон:Small).[7] In May 2015 a collaboration of Spanish amateur astronomers including Alfonso Garceràn Шаблон:Obscode, Amadeo Macias Шаблон:Obscode, Enrique Mansego Шаблон:Obscode, Pedro Rodriguez Шаблон:Obscode and Juan de Haro Шаблон:Obscode measured a period of Шаблон:Val hours—or half the period solution of the other observations, with an amplitude of Шаблон:Val magnitude (Шаблон:Small).[8]

Diameter and albedo

According to the survey 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, Anneliese 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.[9][10][11] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0505 and a diameter of 46.98 kilometers based on an absolute magnitude of 10.5,[12] while Alvares gives a diameter of (Шаблон:Val) and an albedo of (Шаблон:Val).[6] An asteroid occultation, observed on 14 September 2012, gave a best-fit ellipse dimension of 48.0 × 48.0 kilometers.[4] These timed observations are taken when the asteroid passes in front of a distant star. However the quality of the measurement is rated poorly.[4]

Further published mean-diameters by the WISE team include (Шаблон:Val), (Шаблон:Val) and (Шаблон:Val) with corresponding albedos of (Шаблон:Val), (Шаблон:Val) and (Шаблон:Val).[4][12]

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 4,3 4,4 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. ↑ 6,0 6,1 Ошибка цитирования Неверный тег <ref>; для сносок Alvarez-2015 не указан текст
  7. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Oey-2018 не указан текст
  8. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Garceran-2015 не указан текст
  9. ↑ Ошибка цитирования Неверный тег <ref>; для сносок SIMPS не указан текст
  10. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Masiero-2014 не указан текст
  11. ↑ Ошибка цитирования Неверный тег <ref>; для сносок AKARI не указан текст
  12. ↑ 12,0 12,1 Ошибка цитирования Неверный тег <ref>; для сносок lcdb не указан текст
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