Planetary Nebula Abell 55
History
This planetary nebula was discovered in 1955 by the American astronomer George Ogden Abell on the photo plates of the Palomar Observatory Sky Survey (POSS). In 1955 he published a first list of 13 globular clusters and the positions of 73 planetary nebulae. The PN was then listed as number 43 (A55 43). In 1966 Abell published a completed list including the size and description of the 86 planetary nebulae discovered on the POSS photo plates. The PN was then listed as nebula 54 (A66 54). [331, 332]
Physical Properties
| Designations | PN G033.0-05.3: A 55, PK 33-05.1, A55 43, VV' 480 |
| Right Ascension (J2000.0) | 19h 10m 30s |
| Declination (J2000.0) | -02° 21' 02" |
| Dimensions | 62." (optical), 48." (radio) |
| C-Star Designations | AG82 347 |
| C-Star Magnitude | B: 20.5 |
| Discoverer | ABELL 1955 |
Finder Chart
The planetary nebula Abell 55 is located in the constellation Aquila. It is in opposition to the Sun on 7 July and can be observed from Switzerland from June to September.
