NGC 637 [SEP] constellation
NGC 637
NGC 637 is an open cluster of stars in the constellation Cassiopeia. It has a Trumpler classification of I2m and an angular diameter of 4.2′. At a distance of approximately 7,045 light years, this corresponds to a diameter of . The estimated age of this cluster is 5–15 million years.
The cluster was discovered on 9 November 1787 by astronomer William Herschel.
See also.
- Open cluster
- List of NGC objects (1–1000)
- Cassiopeia (constellation)
External links.
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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