21446+2539

  • Unique Name: 21446+2539BU 989AB
  • RA: 21 44 38.70
  • Dec: +25 38 42.0
  • Discoverer: BU
  • Discoverer Number: 989
  • Components: AB
  • First year: 1880
  • Last year: 2011
  • Observations: 434
  • First position angle: 138
  • Last position angle: 281
  • First separation: 0.3
  • Last separation: 0.2
  • Mag first component: 4.94
  • Mag second component: 5.04
  • Spectral type: F5IV
  • Primary proper motion RA: 33
  • Primary proper motion DEC: 11
  • Secondary proper motion RA:
  • Secondary proper motion DEC:
  • Durchmusterung: +24 4463
  • Notes: NOD
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