Пн, 05.12.2016, 05:30:26
Приветствую Вас Гость
Последние сообщения · Участники · Правила форума · Поиск · RSS
Страница 1 из 11
Форум » Досуг » Космос » NGC 50
NGC 50
ingvarr
(65535) Вне сайта
Дата: 12.09.2016, 10:46:20 | Сообщение № 1
admin
Репутация: 729
Награды: 116
За 200 Сообщений За хорошую репутации


NGC 50 (другие обозначения — PGC 983, MCG 1-1-58, GC 5092) — галактика (E-S0) в созвездии Кит.

Этот объект входит в число перечисленных в оригинальной редакции «Нового общего каталога».
Ответить
ingvarr
(65535) Вне сайта
Дата: 12.09.2016, 10:47:15 | Сообщение № 2
admin
Репутация: 729
Награды: 116
За 200 Сообщений За хорошую репутации
NGC 50 (= PGC 983)
Discovered (1865) by Gaspare Ferrari
Reported (1866) by Angelo Secchi
Also observed (Oct 21, 1886) by Lewis Swift
A magnitude 12.3 lenticular galaxy (type E/S0?) in Cetus (RA 00 14 44.6, Dec -07 20 43)
Historical Identification: Per Dreyer, NGC 50 (= GC 5092, Secchi (#13), 1860 RA 00 07 39, NPD 98 08.8) is "very faint". The position precesses to RA 00 14 48.0, Dec -07 22 05, about 1.8 arcmin southeast of the center of the galaxy listed above but not far from its southeastern border, and there is nothing else nearby, so the identification is certain.
Discovery Notes: Although Ferrari discovered the nebula, its observation was published by Secchi, whence Dreyer's attribution. Swift also recorded this object as his list V #1, stating "pretty bright, pretty small, round, very much brighter middle, 1st of 3". His position precesses to RA 00 14 57.4, Dec -07 21 08, about 3 arcmin nearly due east of the galaxy, and a comparison with his observation of NGC 54 (his "2nd of 3") shows a consistent positional error. Given Ferrari's earlier observation, Dreyer's not bothering to mention Swift's observation is not surprising, but it bears mentioning here as his "1st of 3" in connection with his observations of NGC 54 and 58 (his "3rd of 3").
Physical Information: Based on a recessional velocity of 5700 km/sec, NGC 50 is about 265 million light years away. Given that and its apparent size of 2.7 by 2.2 arcmin (counting its extensive halo), it is about 210 thousand light years across.

Ответить
ingvarr
(65535) Вне сайта
Дата: 12.09.2016, 10:47:57 | Сообщение № 3
admin
Репутация: 729
Награды: 116
За 200 Сообщений За хорошую репутации
Ответить
Форум » Досуг » Космос » NGC 50
Страница 1 из 11
Поиск:



             Рейтинг@Mail.ru     HotLog