| Emission nebula | |
|---|---|
| Planetary nebula | |
 | |
| Observation data: J2000 epoch | |
| Right ascension | 21 14 15.25 |
| Declination | +46° 17′ 16.1″ |
| Distance | 5260 ly (1613 pc) |
| Apparent magnitude (V) | 12.1 |
| Apparent diameter | 1.02′ |
| Constellation | Cygnus |
| Designations | PK 088-01 1, PN ARO 41, IRAS 21124+4604 |
| See also: Lists of nebulae | |
NGC 7048 is a planetary nebula in the constellation of Cygnus. The bright star to the lower left of the nebula is a magnitude 10.5 star, designated TYC 3589-4652-1. The nebula is slightly brighter along the west and east sides. This planetary nebula has an apparent magnitude of 12.1. NGC 7048 was discovered by Édouard Stephan on 19 October 1878 using a 31.5-inch reflector.
The central star of NGC 7048 is thought to be a white dwarf. The planetary nebula itself has an elliptical shape; from its low surface brightness it is thought to be highly evolved.
See also
References
- ^ "NGC 7048". simbad.u-strasbg.fr. Retrieved 31 January 2022.
- Stanghellini, Letizia; Shaw, Richard A.; Villaver, Eva (2008). "The Magellanic Cloud Calibration of the Galactic Planetary Nebula Distance Scale". The Astrophysical Journal. 689 (1): 194–202. arXiv:0807.1129. Bibcode:2008ApJ...689..194S. doi:10.1086/592395. S2CID 119257242.
- ^ "Revised NGC Data for NGC 7048 - Hartmut Frommert - SEDS". seds.org. Retrieved 14 March 2017.
- ^ Davis, Christopher J.; Smith, Michael D.; Stern, Luke; Kerr, Thomas H.; Chiar, Jean E. (2003). "Near-infrared spectroscopy of (proto)-planetary nebulae: Molecular hydrogen excitation as an evolutionary tracer". Monthly Notices of the Royal Astronomical Society. 344 (1): 262–282. Bibcode:2003MNRAS.344..262D. doi:10.1046/j.1365-8711.2003.06820.x.
- Seligman, Courtney. "New General Catalogue objects: NGC 7000 - 7049". cseligman.com. Retrieved 14 March 2017.
External links
- NGC 7048 Archived 2010-01-17 at the Wayback Machine
- NGC 7048 from Kopernik.org
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