21028+4551

  • Unique Name: 21028+4551BU 1138CE
  • RA: 21 02 40.75
  • Dec: +45 53 05.1
  • Discoverer: BU
  • Discoverer Number: 1138
  • Components: CE
  • First year: 1908
  • Last year: 2003
  • Observations: 9
  • First position angle: 68
  • Last position angle: 249
  • First separation: 17.1
  • Last separation: 23.6
  • Mag first component: 7.82
  • Mag second component: 12.38
  • Spectral type: K2
  • Primary proper motion RA: 404
  • Primary proper motion DEC: 141
  • Secondary proper motion RA: 76
  • Secondary proper motion DEC: 22
  • Durchmusterung:
  • Notes: NL
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