Planetary Nebula NGC 7048

NGC 7048
NGC 7048: Planetary nebula in Cygnus; 500 mm Cassegrain 5800 mm f/11.4; SBIG STL11K; 60+10+10+10 min LRGB; Bernese Highlands; © 2005 Radek Chromik

History

The planetary nebula NGC 7048 was discovered by French astronomer Édouard Stephan on 19 October 1878. [196]

Physical Properties

Visual brightness is given as 11 or 12 magnitudes. The nebula has an ellipsoidal shape, which is slightly brighter on the western and eastern edges. Infrared images suggest that the nebula has a bi-polar shape similar to a butterfly, tilted about 60° in the line of sight. Due to the nebula's low surface brightness, it is believed to be well advanced in its evolution. The angular diameter is about one arc minute and the distance 1613 pc (about 5200 light years). The white dwarf star in the center has a brightness of about 19 mag. [145, 196, 322]

«Strasbourg-ESO Catalogue of Galactic Planetary Nebulae» Acker et al., 1992 [141]
DesignationsPN G088.7-01.6: NGC 7048, PK 88-01.1, ARO 41, Hb 9, VV 262, VV' 545
Right Ascension (J2000.0)21h 14m 15s
Declination (J2000.0)+46° 17' 19"
Dimensions 61." (optical), 70." (radio)
Distance1.3 kpc - 2.5 kpc
Radial Velocity-50.2 km/s ± 8.1 km/s
Expansion Velocity 15. km/s (O-III)
C-Star DesignationsAG82 424
C-Star Magnitude19.12 mag (V filter)
DiscovererCURTIS 1919

Finder Chart

The planetary nebula NGC 7048 is located in the constellation Cygnus (Swan), roughly between the two stars Deneb (α Cygni) and ρ Cygni, one third closer to ρ Cygni. Only 3' 20" away is the 8.2 mag bright star SAO 50601. The best observation time is from April to November.

Chart Planetary Nebula NGC 7048
Planetary Nebula NGC 7048 in constellation Cygnus. Chart created using SkySafari 6 Pro and STScI Digitized Sky Survey. [149, 160]

Visual Observation

Pending ...

More Objects Nearby (±15°)

Abell 71
Abell 79
Abell 80
Egg Nebula
CRL 2688
Humason 1-2
IC 1311
Gamma Cygni Nebula
IC 1318
IC 1369
Elephant Trunk Nebula
IC 1396
Pelican Nebula
IC 5070
IC 5076
IC 5117
Cocoon Nebula
IC 5146
Soap Bubble Nebula
Ju 1
Seahorse Nebula
LDN 1082
Messier 29
Messier 39
Minkowski 1-79
Minkowski 2-51
Minkowski 4-17
Crescent Nebula
NGC 6888
NGC 6910
North America Nebula
NGC 7000
Fetus Nebula
NGC 7008
Cheeseburger Nebula
NGC 7026
NGC 7027
NGC 7235
Moth Nebula
Sh 1-89
Sh 2-106
Flying Bat Nebula
Sh 2-129
Propeller Nebula
Simeis 57
V 1331 Cygni
vdB 133

References

141Strasbourg-ESO Catalogue of Galactic Planetary Nebulae; A. Acker, F. Ochsenbein, B. Stenholm, R. Tylenda, J. Marcout, C. Schohn; European Southern Observatory; ISBN 3-923524-41-2 (1992); Bibcode:1992secg.book.....A; cdsarc.u-strasbg.fr/viz-bin/cat/V/84
145SIMBAD astronomical database; simbad.u-strasbg.fr/simbad
149SkySafari 6 Pro, Simulation Curriculum; skysafariastronomy.com
160The STScI Digitized Sky Survey; archive.stsci.edu/cgi-bin/dss_form
196Celestial Atlas by Curtney Seligman; cseligman.com/text/atlas.htm (2020-12-28)
322«Near-infrared spectroscopy of (proto)-planetary nebulae: molecular hydrogen excitation as an evolutionary tracer» Christopher J. Davis, Michael D. Smith, Luke Stern, Thomas H. Kerr, Jean E. Chiar; Monthly Notices of the Royal Astronomical Society, Volume 344, Issue 1, September 2003, Pages 262–282; DOI:10.1046/j.1365-8711.2003.06820.x; academic.oup.com/mnras/article/344/1/262/1010312 (2021-05-02)