21561+2420

  • Unique Name: 21561+2420STT 454AB
  • RA: 21 56 04.91
  • Dec: +24 20 23.6
  • Discoverer: STT
  • Discoverer Number: 454
  • Components: AB
  • First year: 1843
  • Last year: 2009
  • Observations: 34
  • First position angle: 278
  • Last position angle: 278
  • First separation: 6.8
  • Last separation: 7.1
  • Mag first component: 7.97
  • Mag second component: 10.04
  • Spectral type: A0
  • Primary proper motion RA: 12
  • Primary proper motion DEC: -12
  • Secondary proper motion RA: 7
  • Secondary proper motion DEC: -13
  • Durchmusterung: +23 4428
  • Notes: D
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