NGC 7048

NGC 7048
Emission nebula
Planetary nebula
Observation data: J2000 epoch
Right ascension21h 14m 15.25s
Declination+46° 17′ 16.1″
Distance5260 ly   (1613 pc)
Apparent magnitude (V)12.1
Apparent diameter1.02′
ConstellationCygnus
DesignationsPK 088-01 1, PN ARO 41, IRAS 21124+4604
See also: Lists of nebulae

NGC 7048, also known as the Peek-a-Boo Nebula, 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

  1. 1 2 "NGC 7048". simbad.u-strasbg.fr. Retrieved 31 January 2022.
  2. ↑ 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.
  3. 1 2 "Revised NGC Data for NGC 7048 - Hartmut Frommert - SEDS". seds.org. Retrieved 14 March 2017.
  4. ↑ O'Meara, Stephen James (2011). Deep-Sky Companions: The Secret Deep. Cambridge University Press. ISBN 978-0-521-19876-9.
  5. 1 2 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.
  6. ↑ Seligman, Courtney. "New General Catalogue objects: NGC 7000 - 7049". cseligman.com. Retrieved 14 March 2017.