NGC 646 is a large barred spiral galaxy located in the constellation Hydrus. [2] Its speed relative to the cosmic microwave background is 8,145 ± 19 km/s, which corresponds to a Hubble …

是 水蛇座 的一個 星系。 维基共享资源 上的相關多媒體資源： NGC 646 NED – SEDS – SIMBAD – VizieR –

2013年3月11日 · NGC 646 25种语言 条目 讨论 不转换 阅读 编辑 查看历史 工具

NGC 646 是 水蛇座 的一个 星系。

NGC 646 (NGC646) is a interacting galaxy that is light years away from Earth in the constellation of Hydrus.

Total magnitude, radius, colour indices, colour gradients and photometric type of galaxiesWe present a catalogue of aperture photometry of galaxies, in UBVRI,assembled from three …

NGC 646 is a Galaxy Pair in the Hydrus constellation. NGC 646 is situated south of the celestial equator and, as such, it is more easily visible from the southern hemisphere. Given its B …

John Herschel (1847) Cape Observations Discovered by Sir John Herschel at the Cape of Good Hope with an 18-inch f/13 speculum telescope. He recorded it as "vF, irregularly round, vglbM."

NGC 646 is a large barred spiral galaxy located in the constellation Hydrus. Its speed relative to the cosmic microwave background is 8,145 ± 19 km/s, which cor...

NGC 646, auch NGC 646-1, ist eine Balken-Spiralgalaxie vom Hubble-Typ SBc im Sternbild Kleine Wasserschlange, welche etwa 362 Millionen Lichtjahre von der Milchstraße entfernt ist. …