NGC 4284
| Galaxie NGC 4284 | |
|---|---|
| |
| SDSS-Aufnahme von NGC 4284 | |
| AladinLite | |
| Sternbild | Großer Bär |
| Position Äquinoktium: J2000.0, Epoche: J2000.0 | |
| Rektaszension | 12h 20m 12,6s [1] |
| Deklination | +58° 05′ 34″ [1] |
| Erscheinungsbild | |
| Morphologischer Typ | Sbc[1][2] |
| Helligkeit (visuell) | 13,6 mag[2] |
| Helligkeit (B-Band) | 14,4 mag[2] |
| Winkelausdehnung | 2,5' × 1,2'[2] |
| Positionswinkel | 102°[2] |
| Flächenhelligkeit | 14,6 mag/arcmin²[2] |
| Physikalische Daten | |
| Rotverschiebung | 0.014023 ± 0.000013[1] |
| Radialgeschwindigkeit | 4204 ± 4 km/s[1] |
| Hubbledistanz H0 = 73 km/(s • Mpc) |
(192 ± 13)e6 Lj (58,9 ± 4,1) Mpc [1] |
| Geschichte | |
| Entdeckung | William Herschel |
| Entdeckungsdatum | 17. April 1789 |
| Katalogbezeichnungen | |
| NGC 4284 • UGC 7393 • PGC 39775 • CGCG 293-011 • MCG +10-18-026 • 2MASX J12201263+5805347 • GC 2860 • H III 798 • LDCE 0891 NED001 • HOLM 373B | |
NGC 4284 ist eine Spiralgalaxie vom Hubble-Typ Sbc im Sternbild Großer Bär am Nordsternhimmel. Sie ist schätzungsweise 192 Millionen Lichtjahre von der Milchstraße entfernt.
Das Objekt wurde am 17. April 1789 von dem Astronomen Wilhelm Herschel entdeckt.[3]
Weblinks
Commons: NGC 4284 – Sammlung von Bildern, Videos und Audiodateien
Einzelnachweise
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