Planetary Nebula NGC 7354
History
NGC 7354 was discovered on 3 November 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
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]
| Designations | PN G107.8+02.3: NGC 7354, PK 107+02.1, ARO 55, VV 278, VV' 567 |
| Right Ascension (J2000.0) | 22h 40m 20s |
| 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 Designations | AG82 445 |
| C-Star Magnitude | >16.2 mag (V filter) |
| Discoverer | LORD 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.
Visual Observation
Description pending ...