NGC 2012

Galaxie
NGC 2012
{{{Kartentext}}}
AladinLite
Sternbild Tafelberg
Position
ÄquinoktiumJ2000.0, Epoche: J2000.0
Rektaszension 05h 22m 35,1s[1]
Deklination −79° 51′ 05″[1]
Erscheinungsbild
Morphologischer Typ SA0-:[1]
Helligkeit (visuell) 13,1 mag[2]
Helligkeit (B-Band) 14,1 mag[2]
Winkel­ausdehnung 1,1′ × 0,6′
Positionswinkel 117°[2]
Inklination °
Flächen­helligkeit 12,7 mag/arcmin²[2]
Physikalische Daten
Zugehörigkeit [1]
Rotverschiebung 0,016218 ±0,000047[1]
Radial­geschwin­digkeit (4862 ± 14) km/s[1]
Hubbledistanz
H0 = 73 km/(s • Mpc)
(209 ± 15) 𐄁 106 Lj
(64,1 ± 4,5) Mpc [1]
Absolute Helligkeit {{{Absolut}}} mag
Masse M
Durchmesser 75.000 Lj[3]
Metallizität [Fe/H]
Geschichte
Entdeckung John Herschel
Entdeckungsdatum 22. Januar 1836
Katalogbezeichnungen
NGC 2012 • PGC 17194 • ESO 016-005 • IRAS F05262-7953 • 2MASX J05223529-7951063 •

NGC 2012 ist eine elliptische Galaxie vom Hubble-Typ E/S0 im Sternbild Tafelberg am Südsternhimmel. Sie ist schätzungsweise 209 Millionen Lichtjahre von der Milchstraße entfernt und hat einen Durchmesser von etwa 75.000 Lj.

Das Objekt wurde am 22. Januar 1831 von John Herschel entdeckt.[4]

Einzelnachweise

  1. a b c d e NASA/IPAC EXTRAGALACTIC DATABASE
  2. a b c d SEDS: NGC 2012
  3. NASA/IPAC
  4. Seligman

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