Английская Википедия:1842 Hynek

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Шаблон:Infobox planet

1842 Hynek, provisional designation Шаблон:Mp, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 8 kilometers in diameter.

The asteroid was discovered on 14 January 1972 by Czech astronomer Luboš Kohoutek at Hamburg Observatory, who named it after his father, Hynek Kohoutek.[1]

Orbit and classification

Hynek is member of the Flora family. It orbits the Sun in the inner main-belt at a distance of 1.9–2.7 AU once every 3 years and 5 months (1,246 days). Its orbit has an eccentricity of 0.18 and an inclination of 5° with respect to the ecliptic.[2]

First identified as Шаблон:Mp at Heidelberg, the asteroid's observation arc begins with its first used observation taken at Lowell Observatory in 1929, when it was identified as Шаблон:Mp, nearly 43 years prior to its official discovery observation at Hamburg.[1]

Physical characteristics

In the Tholen classification, Hynek is characterized as a common S-type asteroid.[2]

Rotation period

In July 2007, the so-far best rated rotational lightcurve of Hynek was obtained from photometric observations by French amateur astronomer Pierre Antonini. Lightcurve analysis gave a well-defined rotation period of 3.9410 hours with a brightness variation of 0.17 magnitude (Шаблон:Small).[3]

Diameter and albedo

According to the surveys carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Hynek measures between 7.996 and 9.31 kilometers in diameter, and its surface has an albedo between 0.28 of 0.300.[4][5][6]

The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 9.80 kilometers with an absolute magnitude of 12.41.[7]

Naming

This minor planet was named after Hynek Kohoutek, the father of the discoverer, celebrating his 70th birthday.[8] The official Шаблон:MoMP was published by the Minor Planet Center on 20 December 1974 (Шаблон:Small).[9]

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-Hynek не указан текст
  2. ↑ 2,0 2,1 Ошибка цитирования Неверный тег <ref>; для сносок jpldata не указан текст
  3. ↑ Ошибка цитирования Неверный тег <ref>; для сносок geneva-obs не указан текст
  4. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Masiero-2014 не указан текст
  5. ↑ Ошибка цитирования Неверный тег <ref>; для сносок WISE не указан текст
  6. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Nugent-2015 не указан текст
  7. ↑ Ошибка цитирования Неверный тег <ref>; для сносок lcdb не указан текст
  8. ↑ Ошибка цитирования Неверный тег <ref>; для сносок springer не указан текст
  9. ↑ Ошибка цитирования Неверный тег <ref>; для сносок DoMP-Circular-dates не указан текст
Источник — http://wikihandbk.com/ruwiki/index.php?title=Английская_Википедия:1842_Hynek&oldid=12504029