Planetary Nebula Abell 66
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 53 (A55 53). In 1966 Abell published a completed list including the size and description of the 86 planetary nebulae discovered on the POSS photo plates. This PN was then listed as nebula 66. [331, 332]
Physical Properties
| Designations | PN G019.8-23.7: A 66, PK 19-23.1, A55 53, ARO 339, ESO 595-04, VV' 519 |
| Right Ascension (J2000.0) | 19h 57m 32s |
| Declination (J2000.0) | -21° 36' 37" |
| Dimensions | 267." (optical) |
| C-Star Designations | AG82 389, CSI -21 -19546, UBV 16998 |
| C-Star Magnitude | U: 16.84, B: 17.71, V: 17.39 |
| Discoverer | ABELL 1955 |
Finder Chart
The planetary nebula Abell 66 is located in the constellation Sagittarius. It is in opposition to the Sun on 19 July and can be observed from Switzerland from May to September.
