| 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]- ^ a b c "NGC 659 – Open (galactic) Cluster". Simbad. Retrieved 27 July 2015.
- ^ a b c d 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.
- ^ https://www.astronomy.com/science/the-yin-yang-cluster-ngc-659-open-cluster-ngc-559-and-barred-spiral-galaxy-ngc-672/
- ^ https://www.deepskycorner.ch/obj/ngc663.en.php
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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