Английская Википедия:(35396) 1997 XF11

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Шаблон:Short description

Шаблон:Use dmy dates Шаблон:Infobox planet

Шаблон:Mp, provisional designation Шаблон:Mp, is a kilometer-sized asteroid, classified as a near-Earth object, Mars-crosser and potentially hazardous asteroid of the Apollo group.[1]

2028 Earth/Moon approach[2]
Date & Time Approach
to 		Nominal distance uncertainty
region
(3-sigma)
2028-Oct-26 06:44 Earth Шаблон:Val ± 106 km[3]
2028-Oct-26 07:39 Moon Шаблон:Val ± 106 km

Description

Three months after its discovery on 6 December 1997 by James V. Scotti of the University of Arizona's Spacewatch Project, the asteroid was predicted to make an exceptionally close approach to Earth on 28 October 2028. Additional precovery observations of the asteroid from 1990 were quickly found that refined the orbit and it is now known the asteroid will pass Earth on 26 October 2028, at a distance of Шаблон:Convert.[2][4][5] During the close approach, the asteroid should peak at about apparent magnitude 8.2,[6] and will be visible in binoculars.[7]

Шаблон:Mp measures between 0.7 and 1.4 kilometers in diameter.[8][9][10]

This asteroid also regularly comes near the large asteroid Pallas.[5]

IAU Circular

On 11 March 1998, using a three-month observation arc, a faulty International Astronomical Union circular and press information sheet were put out that incorrectly concluded "that the asteroid was 'virtually certain' to pass within 80% of the distance to the Moon and stood a 'small...not entirely out of the question' possibility of hitting the Earth in 2028."[11] But by 23 December 1997, it should have been clear that XF11 had no reasonable possibility of an Earth impact.[11] Within hours of the announcement, independent calculations by Paul Chodas, Don Yeomans, and Karri Muinonen had calculated that the probability of Earth impact was essentially zero, and vastly less than the probability of impact from as-yet-undiscovered asteroids.[11] Chodas (1999) concurs with Marsden (1999) that based on the 1997 data alone there was about 1 chance in a hundred thousand that XF11 could have been on an Earth-impact trajectory—that is, until the 1990 precovery observations eliminated such possibilities.[12] During the October 2002 close approach, the asteroid was observed by the 70-meter Goldstone radar dish, further refining the orbit.[7]

Шаблон:Large near earth asteroid flybys 5LD

References

Шаблон:Reflist

External links

Шаблон:Minor planets navigator Шаблон:Small Solar System bodies Шаблон:Authority control

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  1. ↑ Ошибка цитирования Неверный тег <ref>; для сносок MPC-object 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 Horizons2028 не указан текст
  4. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Sormano не указан текст
  5. ↑ 5,0 5,1 Ошибка цитирования Неверный тег <ref>; для сносок neodys не указан текст
  6. ↑ Ошибка цитирования Неверный тег <ref>; для сносок NEODyS2028 не указан текст
  7. ↑ 7,0 7,1 Ошибка цитирования Неверный тег <ref>; для сносок nasa-news не указан текст
  8. ↑ Ошибка цитирования Неверный тег <ref>; для сносок lcdb не указан текст
  9. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Masiero-2017 не указан текст
  10. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Trilling-2016 не указан текст
  11. ↑ 11,0 11,1 11,2 Ошибка цитирования Неверный тег <ref>; для сносок SwRI не указан текст
  12. ↑ Ошибка цитирования Неверный тег <ref>; для сносок ncar799 не указан текст
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