21506+4017

  • Unique Name: 21506+4017SEI1539
  • RA: 21 50 38.27
  • Dec: +40 16 53.1
  • Discoverer: SEI
  • Discoverer Number: 1539
  • Components:
  • First year: 1895
  • Last year: 2013
  • Observations: 8
  • First position angle: 260
  • Last position angle: 260
  • First separation: 25.5
  • Last separation: 26.9
  • Mag first component: 11.46
  • Mag second component: 11.85
  • Spectral type:
  • Primary proper motion RA: 3
  • Primary proper motion DEC: -8
  • Secondary proper motion RA: -7
  • Secondary proper motion DEC: -9
  • Durchmusterung:
  • Notes:
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