Английская Википедия:(144898) 2004 VD17

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Шаблон:Use dmy dates Шаблон:Infobox planet

(144898) Шаблон:Mp, provisional designation Шаблон:Mp, is a sub-kilometer asteroid, classified as near-Earth object of the Apollo group once thought to have a low probability of impacting Earth on 4 May 2102.[1] It reached a Torino Scale rating of 2 and a Palermo Technical Impact Hazard Scale rating of -0.25.[1] With an observation arc of 17 years it is known that closest Earth approach will occur two days earlier on 2 May 2102 at a distance of about 5.5 million km.[2]

Close approaches[2]
Date JPL SBDB
nominal geocentric
distance 		uncertainty
region
(3-sigma)
2032-05-01 Шаблон:Val ± 127 km[3]
2102-05-02 Шаблон:Val ± 50 thousand km
2196-05-05 Шаблон:Val ± 354 thousand km

History

Шаблон:Mp was discovered on 7 November 2004, by the NASA-funded LINEAR asteroid survey. The object is estimated by NASA's Near Earth Object Program Office to be 580 meters in diameter with an approximate mass of Шаблон:Val.[4]

Being approximately 580 meters in diameter, if Шаблон:Mp were to impact land, it would create an impact crater about 10 kilometres wide and generate an earthquake of magnitude 7.4.[5]

Elevated risk estimate in 2006

From February to May 2006, Шаблон:Mp was listed with a Torino Scale impact risk value of 2, only the second asteroid in risk-monitoring history to be rated above value 1.[6] With an observation arc of 1511 days, it was estimated to have a 1 in 1320 chance of impacting on 4 May 2102.[1] The Torino rating was lowered to 1 after additional observations on 20 May 2006, and finally dropped to 0 on 17 October 2006.

2008 observations

As of 4 January 2008, the Sentry Risk Table assigned Шаблон:Mp a Torino value of 0 and an impact probability of 1 in 58.8 million for 4 May 2102.[4] This value was far below the background impact rate of objects this size. Further observations allowed it to be removed from the Sentry Risk Table on 14 February 2008.[7]

It will pass Шаблон:Convert from the Earth on 1 May 2032, allowing a refinement to the orbit.[2]

Properties

It has a spectral type of E.[8] This suggests that the asteroid has a high albedo and is on the smaller size range for an object with an absolute magnitude of 18.8. Шаблон:Expand section

See also

References

Шаблон:Reflist

External links

Шаблон:Minor planets navigator Шаблон:Small Solar System bodies Шаблон:Impact cratering on Earth Шаблон:Authority control

Партнерские ресурсы
Криптовалюты
Магазины
Хостинг
Разное

  1. ↑ 1,0 1,1 1,2 Ошибка цитирования Неверный тег <ref>; для сносок Wayback2006-04 не указан текст
  2. ↑ 2,0 2,1 2,2 Ошибка цитирования Неверный тег <ref>; для сносок jpl-close не указан текст
  3. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Horizons2032 не указан текст
  4. ↑ 4,0 4,1 Ошибка цитирования Неверный тег <ref>; для сносок Wayback2008-01 не указан текст
  5. ↑ Ошибка цитирования Неверный тег <ref>; для сносок newscientist не указан текст
  6. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Morrison-VD17 не указан текст
  7. ↑ Ошибка цитирования Неверный тег <ref>; для сносок removed не указан текст
  8. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Luise2007 не указан текст
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