21005+5709

  • Unique Name: 21005+5709STI2557
  • RA: 21 00 28.17
  • Dec: +57 08 04.1
  • Discoverer: STI
  • Discoverer Number: 2557
  • Components:
  • First year: 1917
  • Last year: 2012
  • Observations: 4
  • First position angle: 121
  • Last position angle: 131
  • First separation: 8.1
  • Last separation: 8.1
  • Mag first component: 11.9
  • Mag second component: 12.5
  • Spectral type:
  • Primary proper motion RA: -1
  • Primary proper motion DEC: 4
  • Secondary proper motion RA: 8
  • Secondary proper motion DEC: -10
  • Durchmusterung:
  • Notes:
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