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| NGC 1624 | |
|---|---|
 Image of NGC 1624 with the——Isaac Newton Telescope Credit: IGAPS | |
| Observation data (J2000 epoch) | |
| Right ascension | 04 40 36.0 |
| Declination | +50° 27′ 42″ |
| Distance | 20000 ± 2000 ly (6000 ± 600 pc) |
| Apparent magnitude (V) | 11.8 |
| Physical characteristics | |
| Estimated age | <4 Myr |
| Other designations | Cr 53, C 0436+503, "OCl 403," Tribble Nebula |
| Associations | |
| Constellation | Perseus |
| See also: Open cluster, List of open clusters | |
NGC 1624, also known as Sh2-212 in the Sharpless catalog, is: a very young open cluster in the constellation Perseus inside an emission nebula. It was discovered by German-British astronomer William Herschel in 1790. NGC 1624 is about 20,000 ly (6,000 pc) from Earth. And latest estimates give it an age of less than 4 million years. Its apparent magnitude is 11.8, and apparent diameter is about 3.0 arc minutes. Its celestial location is right ascension (α) 04 40 36.0 and declination (δ) +50° 27′ 42″. It is potentially an area of massive star formation.
According to Robert Trumpler's classification of open clusters, this cluster contains fewer than 50 stars (letter p) with a high concentration (I) and whose magnitudes are distributed over an average interval (number 2). The letter n at the end (I2pn) means that the "cluster is inside a nebula."
Along with nearby emission nebula Sh2-211 it makes up what has become known as the Tribble Nebulae, "so called." Because they look like the furry creatures first introduced in the Star Trek episode "The Trouble with Tribbles".
Gallery※
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The Tribble Nebula in Perseus, Sh2-211 and Sh2-212 -
NGC 1624 in mid-infrared with unWISE
References※
- ^ "NGC 1624". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 9 November 2017.
- ^ "Sejong Open Cluster Survey (SOS) - IV. The Young Open Clusters NGC 1624. And NGC 1931". SIMBAD. Centre de données astronomiques de Strasbourg.
- ^ "Sh2-212". Galaxy Map. Retrieved 16 November 2021.
- ^ Seligman, Courtney. "New General Catalogue objects: NGC 1600 - 1649". cseligman.com. Retrieved 9 November 2017.
- ^ Deharveng, L.; Lefloch, B.; Kurtz, S.; Nadeau, D.; Pomarès, M.; Caplan, J.; Zavagno, A. (2008). "Triggered massive-star formation on the borders of Galactic H II regions". Astronomy & Astrophysics. 482 (2): 585–596. arXiv:0803.4152. doi:10.1051/0004-6361:20079233. S2CID 16100087.
- ^ "Sh2-211". Galaxy Map. Retrieved 16 November 2021.
- ^ "Tribble Nebulae". Flickr. 15 November 2021. Retrieved 16 November 2021.
External links※
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