21019+5704

  • Unique Name: 21019+5704BU 1139
  • RA: 21 01 55.01
  • Dec: +57 04 18.7
  • Discoverer: BU
  • Discoverer Number: 1139
  • Components:
  • First year: 1889
  • Last year: 1965
  • Observations: 5
  • First position angle: 139
  • Last position angle: 143
  • First separation: 1.9
  • Last separation: 1.6
  • Mag first component: 6.69
  • Mag second component: 12.5
  • Spectral type: B8V
  • Primary proper motion RA: 3
  • Primary proper motion DEC: 4
  • Secondary proper motion RA:
  • Secondary proper motion DEC:
  • Durchmusterung: +56 2523
  • Notes:
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