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NGC 657

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Offener Sternhaufen
NGC 657
SDSS-Aufnahme
SDSS-Aufnahme
AladinLite
Sternbild Kassiopeia
Position
Äquinoktium: J2000.0
Rektaszension 01h 43m 20,8s [1]
Deklination +55° 50′ 11″ [1]
Erscheinungsbild

Helligkeit (visuell) 7 mag
Winkel­ausdehnung 7.0/ 7.0 [2]
Physikalische Daten

Entfernung [3] 4500 Lj
(1372 pc)
Geschichte
Entdeckt von John Herschel
Entdeckungszeit 28. November 1831
Katalogbezeichnungen
 NGC 657 • OCl 337 • GC 388 • h 146 •

NGC 657 ist die Bezeichnung eines offenen Sternhaufens im New General Catalogue. Der Sternhaufen liegt im Sternbild Kassiopeia am Nordsternhimmel.

Das Objekt wurde im Jahr 1831 von dem britischen Astronomen John Herschel entdeckt.[4]

Einzelnachweise

[Bearbeiten | Quelltext bearbeiten]
  1. NASA/IPAC EXTRAGALACTIC DATABASE
  2. SEDS: NGC 657
  3. A. L. Tadross: A catalog of 120 NGC open star cluster. In: Journal of the Korean Astronomical Society, 44, 2011, S. 1–11. doi:10.5303/JKAS.2011.44.1.1.
  4. cseligman.com: NGC Objects: NGC 650 - 699, abgerufen am 27. August 2017


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NGC 657
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