NGC 4549
| Galaxie NGC 4549 | |
|---|---|
| AladinLite | |
| Sternbild | Großer Bär |
| Position Äquinoktium: J2000.0, Epoche: J2000.0 | |
| Rektaszension | 12h 35m 21,3s [1] |
| Deklination | +58° 56′ 59″ [1] |
| Erscheinungsbild | |
| Morphologischer Typ | Sb[1] |
| Helligkeit (visuell) | 15,2 mag[2] |
| Helligkeit (B-Band) | 16,0 mag[2] |
| Winkelausdehnung | 0,4′ × 0,2′[1] |
| Positionswinkel | 100° |
| Flächenhelligkeit | 13,2 mag/arcmin²[2] |
| Physikalische Daten | |
| Rotverschiebung | 0.045121 ± 0.000167[1] |
| Radialgeschwindigkeit | (13527 ± 50) km/s[1] |
| Hubbledistanz H0 = 73 km/(s • Mpc) |
(609 ± 43)e6 Lj (186,7 ± 13,1) Mpc [1] |
| Geschichte | |
| Entdeckung | Wilhelm Herschel |
| Entdeckungsdatum | 24. April 1789 |
| Katalogbezeichnungen | |
| NGC 4549 • PGC 41954 • MCG +10-18-072 • 2MASX J12352123+5856592 • GC 3094 • H III 807 • h 1347 • | |
NGC 4549 ist eine Spiralgalaxie vom Hubble-Typ Sb im Sternbild Großer Bär am Nordsternhimmel. Sie ist schätzungsweise 609 Millionen Lichtjahre von der Milchstraße entfernt.
Das Objekt wurde am 24. April 1789 vom deutsch-britischen Astronomen Wilhelm Herschel[3] mit einem 18-Zoll-Spiegelteleskop entdeckt.
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