20509+4421

  • Unique Name: 20509+4421CHN 30
  • RA: 20 50 54.02
  • Dec: +44 21 17.1
  • Discoverer: CHN
  • Discoverer Number: 30
  • Components:
  • First year: 1950
  • Last year: 2000
  • Observations: 3
  • First position angle: 91
  • Last position angle: 90
  • First separation: 2.5
  • Last separation: 2.4
  • Mag first component: 16.1
  • Mag second component: 0.0
  • Spectral type:
  • Primary proper motion RA: 9
  • Primary proper motion DEC: -9
  • Secondary proper motion RA:
  • Secondary proper motion DEC:
  • Durchmusterung:
  • Notes:
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