21105+4742

  • Unique Name: 21105+4742BU 159AB
  • RA: 21 10 30.96
  • Dec: +47 41 32.0
  • Discoverer: BU
  • Discoverer Number: 159
  • Components: AB
  • First year: 1873
  • Last year: 2011
  • Observations: 25
  • First position angle: 330
  • Last position angle: 312
  • First separation: 1.2
  • Last separation: 1.2
  • Mag first component: 6.55
  • Mag second component: 9.07
  • Spectral type: B6IV
  • Primary proper motion RA: -4
  • Primary proper motion DEC: 1
  • Secondary proper motion RA: -4
  • Secondary proper motion DEC: 1
  • Durchmusterung: +47 3322
  • Notes: N
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