NGC 6912

Galaxie
NGC 6912
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AladinLite
Sternbild Steinbock
Position
Äquinoktium: J2000.0, Epoche: J2000.0
Rektaszension 20h 26m 52,1s [1]
Deklination −18° 37′ 02″ [1]
Erscheinungsbild
Morphologischer Typ SB(s)c / HII[1][2]
Helligkeit (visuell) 13,2 mag[2]
Helligkeit (B-Band) 13,8 mag[2]
Winkel­ausdehnung 1,4' × 1,1'[2]
Positionswinkel 55°[2]
Inklination °
Flächen­helligkeit 13,5 mag/arcmin²[2]
Physikalische Daten
Zugehörigkeit [1]
Rotverschiebung 0,023244 ± 0,000025[1]
Radial­geschwin­digkeit (6968 ± 7) km/s[1]
Hubbledistanz
H0 = 73 km/(s • Mpc) 		(315 ± 22) · 106 Lj
(96,7 ± 6,8) Mpc [1]
Absolute Helligkeit mag
Masse M☉
Durchmesser Lj
Metallizität [Fe/H]
Geschichte
Entdeckung Edward S. Holden
Entdeckungsdatum 14. August 1881
Katalogbezeichnungen
NGC 6912 • PGC 64700 • ESO 596-038 • MCG -03-52-008 • IRAS 20240-1846 • 2MASX J20265207-1837022 • SGC 202400-1846.9 •

NGC 6912 ist eine Balken-Spiralgalaxie mit ausgedehnten Sternentstehungsgebieten vom Hubble-Typ SBc im Sternbild Capricornus auf der Ekliptik. Sie ist schätzungsweise 315 Millionen Lichtjahre von der Milchstraße entfernt und hat einen Durchmesser von etwa 130.000 Lj. Im selben Himmelsareal befinden sich u. a. die Galaxien IC 1319 und IC 1321.

Die Typ-Ic-Supernova SN 2009dp wurde hier beobachtet.[3]

Das Objekt wurde am 14. August 1881 von Edward Singleton Holden entdeckt.[4]

Einzelnachweise

  1. ↑ a b c d e NASA/IPAC EXTRAGALACTIC DATABASE
  2. ↑ a b c d e f SEDS: NGC 6912
  3. ↑ Simbad SN
  4. ↑ Seligman

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