21508+6400

  • Unique Name: 21508+6400MRI 57BC
  • RA: .
  • Dec: .
  • Discoverer: MRI
  • Discoverer Number: 57
  • Components: BC
  • First year: 1999
  • Last year: 2012
  • Observations: 3
  • First position angle: 273
  • Last position angle: 273
  • First separation: 8.8
  • Last separation: 8.9
  • Mag first component: 12.2
  • Mag second component: 12.8
  • Spectral type:
  • Primary proper motion RA: -5
  • Primary proper motion DEC: -6
  • Secondary proper motion RA:
  • Secondary proper motion DEC:
  • Durchmusterung:
  • Notes:
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