NGC 244
| Galaxie NGC 244 | |
|---|---|
| AladinLite | |
| Sternbild | Walfisch |
| Position Äquinoktium: J2000.0, Epoche: J2000.0 | |
| Rektaszension | 00h 45m 46,4s [1] |
| Deklination | −15° 35′ 49″ [1] |
| Erscheinungsbild | |
| Morphologischer Typ | Clumpy Irr/BCD[1] |
| Helligkeit (visuell) | 12,9 mag[2] |
| Helligkeit (B-Band) | 13,9 mag[2] |
| Winkelausdehnung | 1′,2 × 1′,0[2] |
| Positionswinkel | 50°[2] |
| Flächenhelligkeit | 13,0 mag/arcmin²[2] |
| Physikalische Daten | |
| Rotverschiebung | 0,003139 ± 0,00000[1] |
| Radialgeschwindigkeit | (941 ± 0) km/s[1] |
| Hubbledistanz H0 = 73 km/(s • Mpc) |
(44 ± 3)e6 Lj (13,4 ± 0,9) Mpc [1] |
| Durchmesser | 15.000 Lj[3] |
| Geschichte | |
| Entdeckung | Wilhelm Herschel |
| Entdeckungsdatum | 30. Dezember 1785 |
| Katalogbezeichnungen | |
| NGC 244 • UGC A 10 • PGC 2675 • MCG -03-03-003 • 2MASX J00454643-1535487 • VV 728 • GC 129 • H III 485 • h 55 • HARO 14 | |
NGC 244 ist eine irreguläre Zwerggalaxie im Sternbild Walfisch, die schätzungsweise 44 Millionen Lichtjahre von der Milchstraße entfernt ist.
Die Galaxie wurde am 30. Dezember 1785 von dem deutsch-britischen Astronomen Friedrich Wilhelm Herschel entdeckt.[4]
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