NGC 659
| NGC 659 | |
|---|---|
 | |
| Observation data (J2000.0 epoch) | |
| Right ascension | 01h 44m 04s[1] |
| Declination | +60° 40′[1] |
| Distance | 8.2 kly[2] |
| Apparent magnitude (V) | 7.9[1] |
| Apparent dimensions (V) | 6.0′[3] |
| Physical characteristics | |
| Mass | 105 to 106 M☉ |
| Radius | 7.5[2] |
| Estimated age | 20my[2] |
| Other designations | NGC 659, Cr 19, OCL 332 |
| Associations | |
| Constellation | Cassiopeia |
NGC 659, also known as the Yin-Yang Cluster,[4] is an open cluster in the Cassiopeia constellation. It was discovered by Caroline Herschel in 1783.[2] It was later described by William Herschel as "A beautiful cluster of pretty large stars near 15' diameter considerably rich".[5] It is located in the sky almost directly next to NGC 663.
References
[edit]- 1 2 3 "NGC 659 – Open (galactic) Cluster". Simbad. Retrieved 27 July 2015.
- 1 2 3 4 O'Meara, Stephen James (2007). Deep-Sky Companions: Hidden Treasures. Cambridge University Press. p. 48. ISBN 9780521837040.
- ↑ Seligman, Courtney. "Celestial Atlas: NGC Objects: NGC 650 – 699". cseligman.com. Archived from the original on 4 November 2015. Retrieved 27 July 2015.
- ↑ Bakich, Michael E. (13 November 2014). "The Yin-Yang Cluster (NGC 659), open cluster NGC 559, and barred spiral galaxy NGC 672". Astronomy.com. Retrieved 15 July 2026.
- ↑ "Open Clusters NGC 659 & NGC 663 | Deep⋆Sky Corner". Deepskycorner.ch. Retrieved 15 July 2026.
External links
[edit]
Media related to NGC 659 at Wikimedia Commons- NGC 659 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
- SEDS – NGC 659
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