21009+4730

  • Unique Name: 21009+4730BU 1290BD
  • RA: 21 00 56.53
  • Dec: +47 29 44.5
  • Discoverer: BU
  • Discoverer Number: 1290
  • Components: BD
  • First year: 1898
  • Last year: 2000
  • Observations: 2
  • First position angle: 25
  • Last position angle: 21
  • First separation: 2.4
  • Last separation: 2.5
  • Mag first component: 10.65
  • Mag second component: 15.0
  • Spectral type:
  • Primary proper motion RA: 41
  • Primary proper motion DEC: 47
  • Secondary proper motion RA:
  • Secondary proper motion DEC:
  • Durchmusterung:
  • Notes:
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