Английская Википедия:1677 Tycho Brahe

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Шаблон:Short description Шаблон:Infobox planet

1677 Tycho Brahe, provisional designation Шаблон:Mp, is a stony Marian asteroid from the central region of the asteroid belt, approximately Шаблон:Convert in diameter. It was discovered on 6 September 1940, by Finnish astronomer Yrjö Väisälä at Turku Observatory in Southwest Finland.[1] The common stony S-type asteroid has a short rotation period of 3.89 hours.[2] It was later named after Tycho Brahe, one of the fathers of astronomy.[3]

Classification and orbit

When applying the hierarchical clustering method to its proper orbital elements, Tycho Brahe is a member of the Maria family (Шаблон:Small),[4] a large family of stony asteroids.[5]Шаблон:Rp Based on osculating Keplerian orbital elements, the asteroid has also been classified as a member of the Eunomia family (Шаблон:Small), the largest family in the intermediate main belt with more than 5,000 members.[2]

It orbits the Sun in the central main-belt at a distance of 2.3–2.8 AU once every 4.03 years (1,472 days; semi-major axis of 2.53 AU). Its orbit has an eccentricity of 0.11 and an inclination of 15° with respect to the ecliptic.[6] The asteroid was first observed as Шаблон:Mp at Bergedorf Observatory in October 1916, extending the body's observation arc by 24 years prior to its official discovery observation at Turku.[1]

Physical characteristics

The asteroid has been characterized as a stony S-type by Pan-STARRS survey, and in the SDSS-MFB (Masi Foglia Binzel) taxonomy,[2][7]Шаблон:Efn which agree with the overall spectral type for members of the Maria family.[5]Шаблон:Rp

Rotation period

In July 2012, a rotational lightcurve of Tycho Brahe was obtained by Renata Violante and Martha Leake, that gave a short rotation period of 3.89 hours with a brightness variation of 0.38 magnitude (Шаблон:Small).[2][8]

Diameter and albedo

According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Tycho Brahe measures 11.78 kilometers in diameter, and its surface has an albedo of 0.221 (revised 2014-figures).[9] The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.21, derived from the family's largest member and namesake, 15 Eunomia, and calculates a diameter of 13.26 kilometers, based on an absolute magnitude of 11.7.[2]

Naming

This minor planet is named for the great Danish-born astronomer Tycho Brahe (1546–1601) an early forerunner and father of modern astronomy. He is known for his unprecedented precise measurements in the pre-telescopic era.[3] The official Шаблон:MoMP was published by the Minor Planet Center on 15 October 1977 (Шаблон:Small).[10] Brahe is also honored by the prominent crater Tycho in the southern highlands of the Moon and by the Martian crater Tycho Brahe.[3] The bright supernova, SN 1572, is also known as Tycho's Nova.

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-object не указан текст
  2. ↑ 2,0 2,1 2,2 2,3 2,4 Ошибка цитирования Неверный тег <ref>; для сносок lcdb не указан текст
  3. ↑ 3,0 3,1 3,2 Ошибка цитирования Неверный тег <ref>; для сносок springer не указан текст
  4. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Ferret не указан текст
  5. ↑ 5,0 5,1 Ошибка цитирования Неверный тег <ref>; для сносок Nesvorny-2014 не указан текст
  6. ↑ Ошибка цитирования Неверный тег <ref>; для сносок jpldata не указан текст
  7. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Veres-2015 не указан текст
  8. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Violante-2012 не указан текст
  9. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Masiero-2014 не указан текст
  10. ↑ Ошибка цитирования Неверный тег <ref>; для сносок DoMP-Circular-dates не указан текст
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