990 Єркес

990 Єркес
Відкриття
ВідкривачДжордж Ван-Бісбрук
Місце відкриттяВільямс Бей
Дата відкриття23 листопада 1922
Позначення
Тимчасові позначення1922 MZ
1961 VB1
A913 UA
Категорія малої планетиАстероїд головного поясу
Орбітальні характеристики[1]
Епоха 23 травня 2014 (2 456 800,5 JD)
Велика піввісь2,669290623573 а. о.
Перигелій2,096207097638 а. о.
Афелій3,242374149508 а. о.
Ексцентриситет0,214695065750
Орбітальний період1592,913592792 д
Середня орбітальна швидкість0,226000959266 °/д
Середня аномалія37,03046580608°
Нахил орбіти8,779045557831°
Довгота висхідного вузла354,0251658965°
Аргумент перицентру8,830447853635°
Фізичні характеристики
Розміри18,46 км
Період обертання24,56 год
Альбедо0,1303
Стандартна зоряна величина11,7

990 Єркес (990 Yerkes) — астероїд головного поясу, відкритий 23 листопада 1922 року.

Тіссеранів параметр щодо Юпітера — 3,331.

Примітки

  1. База даних малих космічних тіл JPL: 990 Єркес (англ.) . Процитовано 2014.05.08. Останнє спостереження 2014.01.20.


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