20307+2109

  • Unique Name: 20307+2109COU 222
  • RA: 20 30 39.39
  • Dec: +21 09 26.9
  • Discoverer: COU
  • Discoverer Number: 222
  • Components:
  • First year: 1967
  • Last year: 1997
  • Observations: 5
  • First position angle: 3
  • Last position angle: 2
  • First separation: 1.1
  • Last separation: 1.3
  • Mag first component: 11.48
  • Mag second component: 11.9
  • Spectral type: A2
  • Primary proper motion RA: -3
  • Primary proper motion DEC: -3
  • Secondary proper motion RA: -3
  • Secondary proper motion DEC: -3
  • Durchmusterung: +20 4598
  • Notes:
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