NGC 6908

Galaxie
NGC 6908
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NGC 6907 & NGC 6908 (im oberen Spiralarm)
AladinLite
Sternbild Steinbock
Position
ÄquinoktiumJ2000.0, Epoche: J2000.0
Rektaszension 20h 25m 08,9s [1]
Deklination −24° 48′ 04″ [1]
Erscheinungsbild
Morphologischer Typ S[1]
Helligkeit (visuell) 14,6 mag[2]
Helligkeit (B-Band) 15,5 mag[2]
Winkel­ausdehnung 0,3' × 0,1'[2]
Positionswinkel [2]
Inklination °
Flächen­helligkeit 10,6 mag/arcmin²[2]
Physikalische Daten
Zugehörigkeit [1]
Rotverschiebung 0,010207 ± 0,000054[1]
Radial­geschwin­digkeit (3060 ± 16) km/s[1]
Hubbledistanz
H0 = 73 km/(s • Mpc)
(140 ± 10) · 106 Lj
(42,9 ± 3,0) Mpc [1]
Absolute Helligkeit mag
Masse M
Durchmesser Lj
Metallizität [Fe/H]
Geschichte
Entdeckung Albert Marth
Entdeckungsdatum 24. September 1864
Katalogbezeichnungen
NGC 6908 • PGC 4581797 • 2MASX J20250664-2448335 • 2MASS J20250897-2448031

NGC 6908 ist eine linsenförmige Zwerggalaxie vom Hubble-Typ S0 im Sternbild Steinbock auf der Ekliptik. Sie ist schätzungsweise 140 Millionen Lichtjahre von der Milchstraße entfernt und hat einen Durchmesser von etwa 10.000 Lichtjahren. Gemeinsam mit NGC 6907 bildet sie ein gravitativ gebundenes Galaxienpaar.

Das Objekt wurde am 24. September 1864 von Albert Marth entdeckt.[3]

Literatur

  • König, Michael & Binnewies, Stefan (2019): Bildatlas der Galaxien: Die Astrophysik hinter den Astrofotografien, Stuttgart: Kosmos, S. 175

Einzelnachweise

  1. a b c d e NASA/IPAC EXTRAGALACTIC DATABASE
  2. a b c d e SEDS: NGC 6908
  3. Seligman

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