Planetary Nebula Abell 44
History
The planetary nebula Abell 44 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 32 (A55 32). 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 44 (A66 44). [331, 332]
Physical Properties
| Designations | PN G015.6-03.0: A 44, PK 15-03.1, A55 32, ARO 278, VV' 413 |
| Right Ascension (J2000.0) | 18h 30m 11s |
| Declination (J2000.0) | -16° 45' 27" |
| Dimensions | 53." (optical) |
| Radial Velocity | +44.0 ± 6.0 km/s |
| Expansion Velocity | 6.0 (O-III) km/s |
| Discoverer | ABELL 1955 |
Finder Chart
The planetary nebula Abell 44 is located in the constellation Sagittarius. It is in opposition to the Sun on 27 June and can be observed from Switzerland from May to September.
