Planetary Nebula NGC 7354

NGC 7354
NGC 7354: Planetary nebula in Cepheus; 500 mm Cassegrain 3625 mm f/7.2; SBIG STL11K; 340+3*60 min LRGB; Bernese Highlands; © 2015 Radek Chromik

History

NGC 7354 was discovered on November 3, 1787 by the German-British astronomer William Herschel. Lord Rosse already recognized its nature as a planetary nebula in 1862. John L. E. Dreyer described it in his 1888 «New General Catalogue of Nebulae and Clusters of Stars» as follows: Planetary nebula, bright, small, round, slightly brighter in the center. [141, 196, 315]

Physical Properties

NGC 7354
NGC 7354: Image taken with the Hubble Space Telescope [350]

Winds from the central star are believed to play an important role in the shape of planetary nebulae. The composition of NGC 7354 is relatively easy to distinguish: the PN consists of a spherical outer envelope, an ellipsoidal inner envelope, a collection of bright knots concentrated in the center, and two symmetrical jets shooting gas into the interstellar medium on either side. It is believed that these properties were caused by a companion star of the central star, but its presence has not yet been confirmed. The distance to NGC 7354 is about 4200 light years. [350]

«Strasbourg-ESO Catalogue of Galactic Planetary Nebulae» Acker et al., 1992 [141]
DesignationsPN G107.8+02.3: NGC 7354, PK 107+02.1, ARO 55, VV 278, VV' 567
Right Ascension (J2000.0)22h 40m 21s
Declination (J2000.0)61° 17' 06"
Dimensions 23." (optical)
Distance 1.5 kpc
Radial Velocity-41.0 km/s ± 2.0 km/s
Expansion Velocity 25.0 km/s (O-III), 27. km/s (N-II)
C-Star DesignationsAG82 445
C-Star Magnitude>16.2 mag (V filter)
DiscovererLORD ROSSE 1862

Finder Chart

The planetary nebula NGC 7354 is located in the constellation Cepheus. The best viewing time is May to December when the constellation is highest in the night sky.

Chart NGC 7354
Chart created using SkySafari 6 Pro and STScI Digitized Sky Survey. [149, 160]

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); cdsarc.unistra.fr/viz-bin/cat/V/84 (2021-02-18)
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)
315«Second Index Catalogue of Nebulae and Clusters of Stars; containing objects found in the years 1895 to 1907, with Notes and Corrections to the New General Catalogue and to the Index Catalogue for 1888–94» Dreyer, J. L. E. (1910); Memoirs of the Royal Astronomical Society. 59: 105–198; Bibcode:1910MmRAS..59..105D
350Smoky shells; esahubble.org/images/potw1250a (2021-05-16)