NGC 6909

Galaxie
NGC 6909
{{{Kartentext}}}
AladinLite
Sternbild Teleskop
Position
ÄquinoktiumJ2000.0, Epoche: J2000.0
Rektaszension 20h 27m 38,9s [1]
Deklination −47° 01′ 37″ [1]
Erscheinungsbild
Morphologischer Typ SA0^-[1]
Helligkeit (visuell) 11,7 mag[2]
Helligkeit (B-Band) 12,6 mag[2]
Winkel­ausdehnung 2,2' × 1,1'[2]
Positionswinkel 68°[2]
Inklination °
Flächen­helligkeit 12,6 mag/arcmin²[2]
Physikalische Daten
Zugehörigkeit isoliert[1]
Rotverschiebung 0,009270 ± 0,000050[1]
Radial­geschwin­digkeit (2779 ± 15) km/s[1]
Hubbledistanz
H0 = 73 km/(s • Mpc)
(123 ± 9) · 106 Lj
(37,8 ± 2,7) Mpc [1]
Absolute Helligkeit mag
Masse M
Durchmesser Lj
Metallizität [Fe/H]
Geschichte
Entdeckung John Herschel
Entdeckungsdatum 1. Juli 1834
Katalogbezeichnungen
NGC 6909 • PGC 64725 • ESO 285-012 • 2MASX J20273886-4701373 • SGC 202407-4711.5 • AM 2024-471 • 2MASS J20273890-4701371 • WISEA J202738.92-470137.0 • 2MIG 2786

NGC 6909 ist eine elliptische Galaxie vom Hubble-Typ E5 im Sternbild Telescopium am Südsternhimmel. Sie ist schätzungsweise 123 Millionen Lichtjahre von der Milchstraße entfernt und hat einen Durchmesser von etwa 80.000 Lichtjahren.

Im selben Himmelsareal befindet sich u. a. die Galaxie NGC 6918.

Das Objekt wurde am 1. Juli 1834 von John Herschel entdeckt.[3]

Einzelnachweise

  1. a b c d e NASA/IPAC EXTRAGALACTIC DATABASE
  2. a b c d e SEDS: NGC 6909
  3. Seligman

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