NGC 6905
| Planetarischer Nebel NGC 6905 | |
|---|---|
_-_RHaBOIII.png) | |
| Aufnahme mit dem Very Large Telescope und dem FORS2 Instrument | |
| AladinLite | |
| Sternbild | Delphin |
| Position Äquinoktium: J2000.0 | |
| Rektaszension | 20h 22m 23,0s [1] |
| Deklination (Astronomie) | +20° 06′ 16″ [1] |
| Erscheinungsbild | |
| Scheinbare Helligkeit (visuell) | 11,1 mag [2] |
| Scheinbare Helligkeit (B-Band) | 11,9 mag [2] |
| Winkelausdehnung | 1,2' [2] |
| Zentralstern | |
| Bezeichnung | HD 193949 |
| Spektralklasse | [WC3] |
| Physikalische Daten | |
| Rotverschiebung | −0.000014 |
| Radialgeschwindigkeit | −4.3 km/s |
| Entfernung | 8.856 ± 730 Lj |
| Geschichte | |
| Entdeckung | William Herschel |
| Datum der Entdeckung | 16. September 1784 |
| Katalogbezeichnungen | |
| NGC 6905 • PK 61-9.1 • GC 4572 • H IV 16 • h 2075 • ARO 75, Hen 2-466 | |
NGC 6905 (Blue Flash Nebel) ist ein planetarischer Nebel, der von William Herschel am 16. September 1784 entdeckt wurde.[3] Er befindet sich etwa 9.000 Lichtjahre entfernt im Sternbild Delphin.
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