Omega2 Cygni

ω2 Cygni ( Omega2 Cygni ) is a 500 light-years from the Sun distant binary star in the constellation Cygnus, consisting of a 5.44 m bright main star of spectral type M2 and a 6.6 m bright companion star of spectral type A0. The companion star is located at a position angle of 265 degrees 256 ' away from the main star. It can be seen in the small prism binoculars or opera glasses. Because of the color contrast (red main star and blue companion ) is ω2 Cygni a beautiful object for amateur astronomers. The star is also as Rukbat / Ruchbah / Ruchba (Arabic ركبة, DMG Rukbah, knee ') respectively.

Coordinates for the equinox 2000:

  • Right Ascension: 20h31m18.80s
  • Declination: 49 ° 13'13 .0 "
  • Individual star fifth size and darker
  • Binary star
  • Swan ( constellation )
Minute of arc#Symbols and abbreviations DIN 31635
620348
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