21490+4254

  • Unique Name: 21490+4254TDT3172
  • RA: 21 48 57.78
  • Dec: +42 54 14.9
  • Discoverer: TDT
  • Discoverer Number: 3172
  • Components:
  • First year: 1991
  • Last year: 1991
  • Observations: 1
  • First position angle: 164
  • Last position angle: 164
  • First separation: 0.4
  • Last separation: 0.4
  • Mag first component: 10.51
  • Mag second component: 10.54
  • Spectral type:
  • Primary proper motion RA: -36
  • Primary proper motion DEC: -98
  • Secondary proper motion RA: -36
  • Secondary proper motion DEC: -98
  • Durchmusterung:
  • Notes: