21171+4001

  • Unique Name: 21171+4001A 1441AB
  • RA: 21 17 04.75
  • Dec: +40 01 24.6
  • Discoverer: A
  • Discoverer Number: 1441
  • Components: AB
  • First year: 1906
  • Last year: 2008
  • Observations: 16
  • First position angle: 353
  • Last position angle: 278
  • First separation: 0.3
  • Last separation: 0.2
  • Mag first component: 9.7
  • Mag second component: 9.8
  • Spectral type: A0
  • Primary proper motion RA: 2
  • Primary proper motion DEC: -4
  • Secondary proper motion RA:
  • Secondary proper motion DEC:
  • Durchmusterung: +39 4507
  • Notes:
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