Английская Википедия:225 Henrietta

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225 Henrietta is a very large outer main-belt asteroid. It was discovered by Austrian astronomer Johann Palisa on April 19, 1882, in Vienna and named after Henrietta, wife of astronomer Pierre J. C. Janssen.[1] The asteroid is orbiting at a distance of Шаблон:Val from the Sun with a period of Шаблон:Convert and an eccentricity (ovalness) of 0.26. The orbital plane is inclined at an angle of 20.9° to the plane of the ecliptic.[2] 225 Henrietta belongs to Cybele group of asteroids and is probably in a 4:7 orbital resonance with the planet Jupiter.[3]

This is classified as a C-type asteroid and is probably composed of primitive carbonaceous material. It has a very dark surface, with an albedo of 0.040. Photometric measurements made from the Oakley Southern Sky Observatory during 2012 gave a light curve with a period of Шаблон:Val and a variation in brightness of Шаблон:Val in magnitude. This is consistent with a synodic rotation period of Шаблон:Val determined in 2000.[4] In 2001, the asteroid was detected by radar from the Arecibo Observatory at a distance of 1.58 AU. The resulting data yielded an effective diameter of Шаблон:Val.[5]

References

Шаблон:Reflist

External links

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

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  1. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Schmadel2007 не указан текст
  2. ↑ Ошибка цитирования Неверный тег <ref>; для сносок jpldata не указан текст
  3. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Kasuga_et_al_2012 не указан текст
  4. ↑ Ошибка цитирования Неверный тег <ref>; для сносок BMSALPO39_4_213 не указан текст
  5. ↑ Ошибка цитирования Неверный тег <ref>; для сносок icarus186_1_126 не указан текст
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