Английская Википедия:1027 Aesculapia

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Шаблон:Infobox planet

1027 Aesculapia, provisional designation Шаблон:Mp, is a Themistian asteroid from the outer region of the asteroid belt, approximately 33 kilometers in diameter.

It was discovered on 11 November 1923, by Belgian–American astronomer George Van Biesbroeck at Yerkes Observatory in Williams Bay, Wisconsin, United States.[1] It is named for Aesculapius, the god of medicine in Greek mythology.[2]

Classification and orbit

Aesculapia is a member of the Themis family, a dynamical group of carbonaceous outer-belt asteroids which are known for their nearly coplanar ecliptical orbits. It orbits the Sun at a distance of 2.7–3.6 AU once every 5 years and 7 months (2,044 days). Its orbit has an eccentricity of 0.13 and an inclination of 1° with respect to the ecliptic.[3]

In 1889, it was first identified as Шаблон:Mp at Harvard Observatory's Boyden Station in Arequipa, Peru. The body's observation arc begins at Heidelberg in 1908, when it was identified as Шаблон:Mp, 15 years prior to its official discovery observation at Williams Bay.[1]

Diameter and albedo

According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Aesculapia measures between 31.225 and 38.55 kilometers in diameter, and its surface has an albedo between and 0.06 and 0.129.[4][5][6][7][8][9]

The Collaborative Asteroid Lightcurve Link (CALL) derives an albedo of 0.075 and a diameter of 32.05 kilometers with an absolute magnitude of 10.9.[10] Despite the body's low albedo, CALL classifies Aesculapia as a S-type rather than a C-type asteroid.[10]

Photometry

In the last 20 years, photometric observations of Aesculapia gave several rotational lightcurves with significantly divergent rotation periods. First results obtained by Chester Maleszewski and René Roy were only fragmentary or incorrect (Шаблон:Small).[11][12] Photometry at the Palomar Transient Factory and observations by Astronomer Steven Ehlert gave a period of 9.791 and 19.506 hours with a brightness amplitude of 0.09 and 0.19 magnitude, respectively (Шаблон:Small).[13][14] CALL currently adopts a lightcurve obtained by Kylie Hess at Oakley Southern Sky Observatory in March 2015, which gave a period of 13.529 hours and a brightness variation of 0.09 magnitude (Шаблон:Small).Шаблон:Efn

Naming

This minor planet was named for Aesculapius, the Greek and Roman demigod of medicine and healing, son of Apollo and Coronis, after whom the asteroids 158 Koronis and 1862 Apollo are named, respectively.[2] Naming citation was first mentioned in The Names of the Minor Planets by Paul Herget in 1955 (Шаблон:Small).[2]

Notes

Шаблон:Notelist

References

Шаблон:Reflist

External links

Шаблон:Use dmy dates Шаблон:Minor planets navigator Шаблон:Small Solar System bodies

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  1. ↑ 1,0 1,1 Ошибка цитирования Неверный тег <ref>; для сносок MPC-Aesculapia не указан текст
  2. ↑ 2,0 2,1 2,2 Ошибка цитирования Неверный тег <ref>; для сносок springer не указан текст
  3. ↑ Ошибка цитирования Неверный тег <ref>; для сносок jpldata не указан текст
  4. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Masiero-2014 не указан текст
  5. ↑ Ошибка цитирования Неверный тег <ref>; для сносок SIMPS не указан текст
  6. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Nugent-2016 не указан текст
  7. ↑ Ошибка цитирования Неверный тег <ref>; для сносок WISE не указан текст
  8. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Nugent-2015 не указан текст
  9. ↑ Ошибка цитирования Неверный тег <ref>; для сносок AKARI не указан текст
  10. ↑ 10,0 10,1 Ошибка цитирования Неверный тег <ref>; для сносок lcdb не указан текст
  11. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Maleszewski-2004 не указан текст
  12. ↑ Ошибка цитирования Неверный тег <ref>; для сносок geneva-obs не указан текст
  13. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Ehlert-2015 не указан текст
  14. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Waszczak-2015 не указан текст
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