Английская Википедия:Critical-list minor planet

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Версия от 11:06, 22 февраля 2024; EducationBot (обсуждение | вклад) (Новая страница: «{{Английская Википедия/Панель перехода}} {{Short description|Numbered minor planet with uncertain position and orbit}} {{Use dmy dates|date=July 2020}} __NOTOC__ A '''critical-list minor planet''' (''critical list numbered object'' or ''critical object'') is a numbered minor planet for which existing measurements of the orbit and position are especially in need of improvement.<ref name="Monet-1994" />...»)
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Шаблон:Short description Шаблон:Use dmy dates

A critical-list minor planet (critical list numbered object or critical object) is a numbered minor planet for which existing measurements of the orbit and position are especially in need of improvement.[1]

The IAU's Minor Planet Center (MPC) regularly publishes a list of these critical objects in their Minor Planet Electronic Circular.[2] The list typically contains asteroids that have been observed at a small number of apparitions, especially on opposition, or that have not been adequately observed for more than 10 years, while other observatories create their own, customized lists.[3] The MPC also lists currently observable critical objects on their website,[4] providing differently formatted lists of orbital elements to the worldwide astrometric community.[5]

Lowell Observatory publishes their own critical list, distinctly different from the MPC, instead focusing on objects with high ephemeris uncertainty. Specifically, objects with computed ephemeris uncertainty greater than 2 arcseconds over the next 10 years, and objects whose orbits degrade significantly when temporally isolated observations are ignored, are included in the list.[3]

List

Шаблон:As of, the MPC includes 1,494 objects in their critical list. This list contains all critical objects within the first 50,000 numbered minor planets:[6] Шаблон:Div col

Шаблон:Div col end

See also

References

Шаблон:Reflist

External links

Шаблон:Small Solar System bodies

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  1. ↑ Ошибка цитирования Неверный тег <ref>; для сносок Monet-1994 не указан текст
  2. ↑ Ошибка цитирования Неверный тег <ref>; для сносок MPC-MPEC не указан текст
  3. ↑ 3,0 3,1 Ошибка цитирования Неверный тег <ref>; для сносок Lowell не указан текст
  4. ↑ Ошибка цитирования Неверный тег <ref>; для сносок MPC-Observable не указан текст
  5. ↑ Ошибка цитирования Неверный тег <ref>; для сносок MPC-Observable-Elements не указан текст
  6. ↑ Ошибка цитирования Неверный тег <ref>; для сносок MPCORB не указан текст
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