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NGC 1781

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Galaxie
NGC 1781/1794
(({Kartentext))}
AladinLite
Sternbild Hase
Position
ÄquinoktiumJ2000.0, Epoche: J2000.0
Rektaszension 05h 07m 55,0s[1]
Deklination −18° 11′ 24″[1]
Erscheinungsbild
Morphologischer Typ (R)SB(s)0^0^ pec:[1]
Helligkeit (visuell) 12,7 mag[2]
Helligkeit (B-Band) 13,7 mag[2]
Winkel­ausdehnung 1,3′ × 1,1′[2]
Positionswinkel 45°[2]
Inklination °
Flächen­helligkeit 12,9 mag/arcmin²[2]
Physikalische Daten
Zugehörigkeit LDCE 368[1]
Rotverschiebung 0.016645 ± 0.000097[1]
Radial­geschwin­digkeit (4990 ± 29) km/s[1]
Hubbledistanz
H0 = 73 km/(s • Mpc)
(217 ± 15) · 106 Lj
(66,5 ± 4,7) Mpc [1]
Absolute Helligkeit mag
Masse M
Durchmesser 80.000 Lj[3]
Metallizität [Fe/H]
Geschichte
Entdeckung Wilhelm Herschel
Entdeckungsdatum 6. Februar 1785
Katalogbezeichnungen
NGC 1781/1794 • PGC 16788 • ESO 553-007 • MCG -03-14-002 • IRAS 05057-1815 • 2MASX J05075502-1811237 • GC 998 • H III 268 •

NGC 1781 = NGC 1794 ist eine linsenförmige Galaxie vom Hubble-Typ SB0 im Sternbild Lepus am Südsternhimmel. Sie ist schätzungsweise 217 Millionen Lichtjahre von der Milchstraße entfernt.

Das Objekt wurde am 6. Februar 1785 von Wilhelm Herschel entdeckt.[4]

Einzelnachweise

[Bearbeiten | Quelltext bearbeiten]
  1. a b c d e NASA/IPAC EXTRAGALACTIC DATABASE
  2. a b c d e SEDS: NGC 1781
  3. NASA/IPAC
  4. Seligman
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NGC 1781
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