21390+4940

  • Unique Name: 21390+4940HJ 1674
  • RA: 21 38 59.64
  • Dec: +49 39 57.4
  • Discoverer: HJ
  • Discoverer Number: 1674
  • Components:
  • First year: 1828
  • Last year: 2003
  • Observations: 5
  • First position angle: 330
  • Last position angle: 326
  • First separation: 9.0
  • Last separation: 11.4
  • Mag first component: 9.43
  • Mag second component: 11.5
  • Spectral type: A0
  • Primary proper motion RA: -6
  • Primary proper motion DEC: -2
  • Secondary proper motion RA: -5
  • Secondary proper motion DEC: -2
  • Durchmusterung: +49 3583
  • Notes:
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