Planetary nebula in the constellation Cygnus
| Nebula | |
|---|---|
 | |
| Observation data: epoch | |
| Right ascension | 19h 55m 02s |
| Declination | +29° 17′ 21″ |
| Distance | 4500 ly (1380 pc) |
| Apparent magnitude (V) | 13.2 |
| Apparent diameter | 1.13 ± 0.23 |
| Apparent dimensions (V) | 50" x 45"[1] |
| Constellation | Cygnus |
| Physical characteristics | |
| Absolute magnitude (V) | +2.62 |
| Designations | PN G065.9+00.5, Sh 2-95, VV 245 |
| See also: Lists of nebulae | |
NGC 6842 is a planetary nebula in Cygnus, along the border with Vulpecula.[2] It was independently discovered three times. First on 28 June 1863 by Albert Marth. Secondly, by Heinrich Louis d'Arrest on 26 August, 1864.[3] Finally, on 26 August 1864 by Truman Henry Safford. It was later identified as a planetary nebula by Heber Doust Curtis in 1919.[4]
The central star is magnitude 16.2[5]
References
[edit]- ^ Curtis, H.D. "Three New Planetary Nebulae".
- ^ Steinecke, Wolfgang. "Revised NGC Data for NGC 6842".
- ^ Seligman, Courtney. "Celestial Atlas NGC Objects: NGC 6800 - 6849".
- ^ "Planetary Nebula NGC 6842".
- ^ "Planetary Nebula NGC 6842 in Vulpecula".
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