21099+4257

  • Unique Name: 21099+4257LDS2492
  • RA: 21 09 49.77
  • Dec: +42 57 20.6
  • Discoverer: LDS
  • Discoverer Number: 2492
  • Components:
  • First year: 1954
  • Last year: 2002
  • Observations: 4
  • First position angle: 135
  • Last position angle: 135
  • First separation: 21.0
  • Last separation: 21.5
  • Mag first component: 15.37
  • Mag second component: 15.64
  • Spectral type:
  • Primary proper motion RA: 202
  • Primary proper motion DEC: -19
  • Secondary proper motion RA: 202
  • Secondary proper motion DEC: -19
  • Durchmusterung:
  • Notes:
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