21520+5548

  • Unique Name: 21520+5548STF2840AB
  • RA: 21 52 01.02
  • Dec: +55 47 48.3
  • Discoverer: STF
  • Discoverer Number: 2840
  • Components: AB
  • First year: 1782
  • Last year: 2012
  • Observations: 102
  • First position angle: 192
  • Last position angle: 196
  • First separation: 21.2
  • Last separation: 17.7
  • Mag first component: 5.64
  • Mag second component: 6.42
  • Spectral type: B6IV-V
  • Primary proper motion RA: 19
  • Primary proper motion DEC: -1
  • Secondary proper motion RA: 13
  • Secondary proper motion DEC: 13
  • Durchmusterung: +55 2639
  • Notes: NLD
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