21420+1617

  • Unique Name: 21420+1617J 287
  • RA: 21 41 56.43
  • Dec: +16 16 56.8
  • Discoverer: J
  • Discoverer Number: 287
  • Components:
  • First year: 1903
  • Last year: 2009
  • Observations: 18
  • First position angle: 353
  • Last position angle: 348
  • First separation: 2.3
  • Last separation: 3.0
  • Mag first component: 11.3
  • Mag second component: 11.6
  • Spectral type:
  • Primary proper motion RA: 12
  • Primary proper motion DEC: -84
  • Secondary proper motion RA: -6
  • Secondary proper motion DEC: 7
  • Durchmusterung: +15 4477
  • Notes:
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