Английская Википедия:13 Egeria

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Шаблон:Short description Шаблон:Other uses Шаблон:Infobox planet

Egeria (minor planet designation: 13 Egeria) is a large main-belt G-type asteroid.[1] It was discovered by Annibale de Gasparis on November 2, 1850. Egeria was named by Urbain Le Verrier, whose computations led to the discovery of Neptune, after the mythological nymph Egeria of Aricia, Italy, the wife of Numa Pompilius, second king of Rome.[2]

Файл:20080122 13EgeriaOccultationProfile.png
OCCULT4 visualization of 13 Egeria occultation event of January 22, 2008

Egeria occulted a star on January 8, 1992. Its disc was determined to be quite circular (217×196 km). On January 22, 2008, it occulted another star, and this occultation was timed by several observers in New Mexico and Arizona, coordinated by the IOTA Asteroid Occultation Program.[3] The result showed that Egeria presented an approximately circular profile to Earth of 214.8×192 km, well in agreement with the 1992 occultation.Шаблон:Citation needed It has also been studied by radar.[4]

In 1988 a search for satellites or dust orbiting this asteroid was performed using the UH88 telescope at the Mauna Kea Observatories, but the effort came up empty.[5] Spectral analysis of Egeria shows it to be unusually high in water content, 10.5–11.5% water by mass.[6] This makes Egeria a prominent candidate for future water-mining ventures.

Файл:13Egeria (Lightcurve Inversion).png
A three-dimensional model of 13 Egeria based on its light curve

See also

Notes

Шаблон:Notelist

References

Шаблон:Reflist

External links

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

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  1. ↑ Шаблон:Cite web
  2. ↑ Шаблон:Cite book
  3. ↑ Шаблон:Cite web
  4. ↑ Шаблон:Cite web
  5. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Gradie1988 не указан текст
  6. ↑ Шаблон:Cite journal
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