NGC 1256

Galaxie
NGC 1256
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AladinLite
Sternbild Eridanus
Position
ÄquinoktiumJ2000.0, Epoche: J2000.0
Rektaszension 03h 13m 58,27s [1]
Deklination −21° 59′ 11,1″ [1]
Erscheinungsbild
Morphologischer Typ SAB0-?[1]
Helligkeit (visuell) 13,6 mag[2]
Helligkeit (B-Band) 14,6 mag[2]
Winkel­ausdehnung 1,10′ × 0,4′[2]
Positionswinkel 108°[2]
Inklination °
Flächen­helligkeit 12,8 mag/arcmin²[2]
Physikalische Daten
Zugehörigkeit [1]
Rotverschiebung 0,014383 ± 0,000080[1]
Radial­geschwin­digkeit (4312 ± 24) km/s[1]
Hubbledistanz
H0 = 73 km/(s • Mpc)
(189 ± 13) · 106 Lj
(58,0 ± 4,1) Mpc [1]
Absolute Helligkeit mag
Masse M
Durchmesser 60.000 Lj[3]
Metallizität [Fe/H]
Geschichte
Entdeckung John Herschel
Entdeckungsdatum 13. November 1835
Katalogbezeichnungen
NGC 1256 • PGC 12032 • ESO 547-023 • MCG -04-08-052 • 2MASX J03135827-2159111 • GALEXASC J031358.07-215909.5 • WISEA J031358.24-215910.6

NGC 1256 ist eine Elliptische Galaxie vom Hubble-Typ E/SB0 im Sternbild Eridanus am Südsternhimmel. Sie ist schätzungsweise 189 Millionen Lichtjahre von der Milchstraße entfernt und hat einen Durchmesser von etwa 60.000 Lichtjahren.
Im selben Himmelsareal befinden sich u. a. die Galaxien NGC 1258 und IC 1898.

Das Objekt wurde am 13. November 1835 von dem Astronomen John Herschel entdeckt.[4]

Einzelnachweise

  1. a b c d e NASA/IPAC EXTRAGALACTIC DATABASE
  2. a b c d e SEDS: NGC 1256
  3. NASA/IPAC
  4. Seligman

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