NGC 1817 [SEP] constellation
NGC 1817
NGC 1817 is an open cluster of stars in the constellation Taurus. It was discovered by English astronomer William Herschel in February 1784. With an apparent magnitude of 7 and spanning 17 arc minutes across the sky, it is separated from the NGC 1807 cluster by just a few degrees. Indeed, the two may actually be parts of a single extended cluster.
The NGC 1817 cluster is around the same age as the Hyades, or perhaps a little younger at 0.8−1.2 billion years. The turnoff point for
NGC 48
The New General Catalogue object NGC 48 is a barred spiral galaxy located approximately 79.3 million light-years from the Solar System in the constellation Andromeda.
See also.
- Spiral galaxy
- List of NGC objects (1–1000)
- Andromeda (constellation)
External links.
- http://spider.seds.org/ngc/ngc.cgi?48
- http://spider.seds.org/ngc/ngc_fr.cgi?48
- http://spider.seds.org/ngc/revngcic.cgi?NGC48
- http://vizier.u-strasbg.fr/viz-bin/VizieR-S?NGC+48
- Базы данных про объекты NGC/IC