20499+4640

  • Unique Name: 20499+4640BU 250
  • RA: 20 49 54.64
  • Dec: +46 39 40.8
  • Discoverer: BU
  • Discoverer Number: 250
  • Components:
  • First year: 1875
  • Last year: 2008
  • Observations: 11
  • First position angle: 8
  • Last position angle: 7
  • First separation: 20.3
  • Last separation: 18.3
  • Mag first component: 6.33
  • Mag second component: 11.5
  • Spectral type: B4Ve
  • Primary proper motion RA: 4
  • Primary proper motion DEC: 4
  • Secondary proper motion RA: 3
  • Secondary proper motion DEC: -6
  • Durchmusterung: +46 3067
  • Notes:
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