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.[4] This planetary nebula has an apparent magnitude of 12.1.[3] NGC 7048 was discovered by Édouard Stephan on 19 October 1878 using a 31.5-inch reflector.[5]

NGC 7048
Emission nebula
Planetary nebula
Observation data: J2000 epoch
Right ascension21h 14m 15.25s[1]
Declination+46° 17′ 16.1″[1]
Distance5260 ly   (1613[2] pc)
Apparent magnitude (V)12.1[3]
Apparent diameter1.02
DesignationsPK 088-01 1, PN ARO 41, IRAS 21124+4604
See also: Lists of nebulae

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.[4]

References edit

  1. ^ a b "NGC 7048". 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. ^ a b "Revised NGC Data for NGC 7048 - Hartmut Frommert - SEDS". Retrieved 14 March 2017.
  4. ^ a b 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.
  5. ^ Seligman, Courtney. "New General Catalogue objects: NGC 7000 - 7049". Retrieved 14 March 2017.

External links edit