21479+3117

  • Unique Name: 21479+3117HJ 1688
  • RA: 21 47 53.80
  • Dec: +31 16 04.7
  • Discoverer: HJ
  • Discoverer Number: 1688
  • Components:
  • First year: 1828
  • Last year: 2002
  • Observations: 6
  • First position angle: 6
  • Last position angle: 352
  • First separation: 12.0
  • Last separation: 16.2
  • Mag first component: 11.13
  • Mag second component: 12.6
  • Spectral type:
  • Primary proper motion RA: -16
  • Primary proper motion DEC: -31
  • Secondary proper motion RA: -38
  • Secondary proper motion DEC: -23
  • Durchmusterung: +30 4529
  • Notes: