Английская Википедия:1284 Latvia

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Шаблон:Short description Шаблон:Use dmy dates

Шаблон:Infobox planet

1284 Latvia, provisional designation Шаблон:Mp, is a rare-type asteroid from the middle region of the asteroid belt, approximately 37 kilometers in diameter. It was discovered on 27 July 1933, by German astronomer Karl Reinmuth at Heidelberg Observatory in southern Germany, and named after the Republic of Latvia.[1][2]

Orbit and classification

Latvia orbits the Sun in the middle main-belt at a distance of 2.2–3.1 AU once every 4 years and 4 months (1,572 days). Its orbit has an eccentricity of 0.17 and an inclination of 11° with respect to the ecliptic.[3]

It was first identified as Шаблон:Mp at Moscow Observatory (Шаблон:Small) in 1925, and then as Шаблон:Mp at Lowell Observatory in 1931. The body's observation arc begins with its official discovery observation at Heidelberg in 1933.[2]

Physical characteristics

Spectral type

Latvia is classified as a rare T and L type asteroid in the Tholen and SMASS taxonomy scheme, respectively, both indicating a featureless spectra of a dark and reddish body.[3]

Rotation period

The so-far best rated rotational lightcurve of Latvia was obtained by the "Spanish Photometric Asteroid Analysis Group" (OBAS) in September 2015. Lightcurve analysis gave it a rotation period of 9.55 hours with a brightness variation of 0.23 magnitude (Шаблон:Small).[4]

Previous photometric observations by James W. Brinsfield at Via Capote Observatory Шаблон:Obscode and French amateur astronomer Laurent Bernasconi gave a period of 9.552 and 9.644 hours with an amplitude of 0.10 and 0.21 magnitude, respectively (Шаблон:Small).[5][6] The first rotational lightcurve obtained by Richard P. Binzel in the 1980s gave a twice a long period solution of 18 hours (Шаблон:Small).[7]

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, Latvia measures between 33.27 and 41.47 kilometers in diameter, and its surface has an albedo between 0.083 and 0.13 (without preliminary results).[8][9][10][11] The Collaborative Asteroid Lightcurve Link adopts the results by IRAS, that is an albedo of 0.1045 and a diameter of 36.81 kilometers with an absolute magnitude of 10.24.[12]

Naming

This minor planet was named after the Republic of Latvia.[1] Naming citation was first mentioned in The Names of the Minor Planets by Paul Herget in 1955 (Шаблон:Small).[1]

References

Шаблон:Reflist

External links

Шаблон:Minor planets navigator Шаблон:Small Solar System bodies

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  1. ↑ 1,0 1,1 1,2 Ошибка цитирования Неверный тег <ref>; для сносок springer не указан текст
  2. ↑ 2,0 2,1 Ошибка цитирования Неверный тег <ref>; для сносок MPC-Latvia не указан текст
  3. ↑ 3,0 3,1 Ошибка цитирования Неверный тег <ref>; для сносок jpldata не указан текст
  4. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Garceran-2016a не указан текст
  5. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Brinsfield-2008c не указан текст
  6. ↑ Ошибка цитирования Неверный тег <ref>; для сносок geneva-obs не указан текст
  7. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Binzel-1983b не указан текст
  8. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Nugent-2016 не указан текст
  9. ↑ Ошибка цитирования Неверный тег <ref>; для сносок SIMPS не указан текст
  10. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Masiero-2014 не указан текст
  11. ↑ Ошибка цитирования Неверный тег <ref>; для сносок AKARI не указан текст
  12. ↑ Ошибка цитирования Неверный тег <ref>; для сносок lcdb не указан текст
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