Planetary Nebula Abell 82
History
The planetary nebula Abell 82 (PN A55 68, PN A66 82, PK 114-04.1, PN ARO 114) was discovered in 1955 by the American astronomer George Ogden Abell on the photo plates of the «Palomar Observatory Sky Survey» (POSS) discovered. Most of these 86 PNs discovered on the POSS photo plates are large and have a low surface brightness, which suggests that their stage of development is advanced. Abell described the PN as an imperfect homogeneous disk with a 94" diameter. At that time he could not clearly identify a central star. [331, 332]
Physical Properties
Distances range from 1887 to 2014 parsecs. The apparent brightnesses in different filters are: J = 12.4 mag, H = 11.8 mag, K = 11.7 mag. [145]
| Designations | PN G114.0-04.6: A 82, PK 114-04.1, A55 68, ARO 114, VV' 579 |
| Right Ascension (J2000.0) | 23h 45m 47s |
| Declination (J2000.0) | +57° 04' 01" |
| Dimensions | 94." (optical), 81." (radio) |
| Radial Velocity | -30.5 ± 3.3 km/s |
| Expansion Velocity | 25. (O-III) 32.5 (N-II) km/s |
| C-Star Designations | AG82 456 |
| C-Star Magnitude | B: 16.20, V: 14.92 |
| Discoverer | ABELL 1955 |
Finder Chart
The planetary nebula Abell 82 is located in the constellation Cassiopeia and is circumpolar for Central Europe. The best time to observe is July to January, when it is highest at night.
