Водна змия (съзвездие)

Водна змия
Карта на съзвездието Водна змия‎
Информация
Латинско имеHydrus
СъкращениеHyi
Символизираводна змия
Ректасцензия0h05m – 4h40mh
Деклинация−58° – −82°
Площ243кв. градуса
61 в класацията
Главни звезди3
Най-ярка звездаβ Hyi
(Видима величина 2.82)
Метеорни потоциняма
Съседни
съзвездия
Видимо на ширини между +8° and −90°
Най-добра видимост в 21:00 през месец ноември
Водна змия в Общомедия

Водна змия[1][2] (на латински: Hydrus, водна змия) е малко съзвездие, видимо от южното полукълбо. Тъй като не е било достъпно за наблюдение от древните гърци, с това съзвездие не е свързан сюжет от митологията.

Съзвездието е открито около 1595 г. от двама холандски навигатори, Питер Кайзер и Фредерик де Хаутман. Йохан Байер го картира в своята Уранометрия през 1603 г.

С просто око могат да се наблюдават около 20 звезди от съзвездието, като само три от тях са с видима звездна величина под 3m. В рамките на съзвездието може да се наблюдава само един обект от дълбокия космос, галактиката IC 1717.

По-старо наименование на съзвездието на български е Южна хидра.[3] Поради това не бива да се бърка със съзвездието Хидра.

Източници

  1. Астрономически календар за 2007 г., Издателство на БАН, София, 2006, ISSN 0861-1270
  2. „Астрономия“, Никола Николов, Марин Калинков, УИ Св. Кл. Охридски, София, 1998, ISBN 954-07-1118-5
  3. „Митове и легенди за съзвездията“, Ангел Бонов, Издателство Наука и изкуство, София, 1976

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