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NGC 3172

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Galaxie
NGC 3172
(({Kartentext))}
AladinLite
Sternbild Kleiner Bär
Position
ÄquinoktiumJ2000.0, Epoche: J2000.0
Rektaszension 11h 47m 14,0s[1]
Deklination +89° 05′ 35″[1]
Erscheinungsbild
Morphologischer Typ Sa? pec?[1]
Helligkeit (visuell) 14,4 mag[2]
Helligkeit (B-Band) 15,3 mag[2]
Winkel­ausdehnung 1.00 × 0.7[2]
Positionswinkel 39°[2]
Inklination °
Flächen­helligkeit 13,9 mag/arcmin²[2]
Physikalische Daten
Zugehörigkeit LDCE 717[1]
Rotverschiebung 0.020334 ± 0.000097[1]
Radial­geschwin­digkeit (6096 ± 29) km/s[1]
Hubbledistanz
H0 = 73 km/(s • Mpc)
(280 ± 20) · 106 Lj
(85,8 ± 6,0) Mpc [1]
Absolute Helligkeit mag
Masse M
Durchmesser 80.000 Lj[3]
Metallizität [Fe/H]
Geschichte
Entdeckung John Herschel
Entdeckungsdatum 4. Oktober 1831
Katalogbezeichnungen
NGC 3172 • PGC 36847 • CGCG 370-002/370-018 • MCG +15-01-011 • 2MASX J11471192+8905357 •

NGC 3172 (Polarissima borealis) ist eine Spiralgalaxie vom Hubble-Typ Sa im Sternbild Kleiner Bär. Sie ist schätzungsweise 280 Millionen Lichtjahre von der Milchstraße entfernt.

Das Objekt wurde am 4. Oktober 1831 von John 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 3172
  3. NASA/IPAC
  4. Seligman
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NGC 3172
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