21499-2509

  • Unique Name: 21499-2509B 540
  • RA: 21 49 52.80
  • Dec: -25 09 04.2
  • Discoverer: B
  • Discoverer Number: 540
  • Components:
  • First year: 1925
  • Last year: 1964
  • Observations: 8
  • First position angle: 169
  • Last position angle: 326
  • First separation: 0.2
  • Last separation: 0.1
  • Mag first component: 9.5
  • Mag second component: 9.7
  • Spectral type: A0/1V
  • Primary proper motion RA: -9
  • Primary proper motion DEC: -26
  • Secondary proper motion RA:
  • Secondary proper motion DEC:
  • Durchmusterung: -2515601
  • Notes: N
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