NGC 5645

Galaxie
NGC 5645
{{{Kartentext}}}
SDSS-Aufnahme
AladinLite
Sternbild Jungfrau
Position
Äquinoktium: J2000.0, Epoche: J2000.0
Rektaszension 14h 30m 39,3s [1]
Deklination +07° 16′ 30″ [1]
Erscheinungsbild
Morphologischer Typ SB(s)d[1]
Helligkeit (visuell) 12,2 mag[2]
Helligkeit (B-Band) 12,9 mag[2]
Winkel­ausdehnung 2,6′ × 1,6′[2]
Positionswinkel 80°[2]
Inklination °
Flächen­helligkeit 13,6 mag/arcmin²[2]
Physikalische Daten
Zugehörigkeit [1]
Rotverschiebung 0,004570 ± 0,000005[1]
Radial­geschwin­digkeit (1370 ± 1) km/s[1]
Hubbledistanz
H0 = 73 km/(s • Mpc) 		(61 ± 4) · 106 Lj
(18,8 ± 1,3) Mpc [1]
Absolute Helligkeit mag
Masse M☉
Durchmesser Lj
Metallizität [Fe/H] {{{Metallizität}}}
Geschichte
Entdeckung Wilhelm Herschel
Entdeckungsdatum 13. April 1784
Katalogbezeichnungen
NGC 5645 • UGC 9328 • PGC 51846 • CGCG 047-070 • MCG +01-37-19 • IRAS 14281+0729 • KUG 1428+074 • GC 3910 • H II 150 • h 1823 • LDCE 1076 NED014

NGC 5645 ist eine 12,2 mag helle Balkenspiralgalaxie vom Hubble-Typ SBcd im Sternbild Jungfrau und etwa 61 Millionen Lichtjahre von der Milchstraße entfernt.

Sie wurde am 13. April 1784 von Wilhelm Herschel mit einem 18,7-Zoll-Spiegelteleskop entdeckt,[3] der sie dabei mit „faint, pretty large, nearly round, easily resolvable“[4] beschrieb.

  • NGC 5645. SIMBAD, abgerufen am 20. März 2016 (englisch).
  • NGC 5645. DSO Browser, abgerufen am 20. März 2016 (englisch).

Einzelnachweise

  1. ↑ a b c d e NASA/IPAC EXTRAGALACTIC DATABASE
  2. ↑ a b c d e SEDS: NGC 5645
  3. ↑ Seligman
  4. ↑ Auke Slotegraaf: NGC 5645. Deep Sky Observer's Companion, abgerufen am 20. März 2016 (englisch).

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