21500+2157

  • Unique Name: 21500+2157TDT3184
  • RA: 21 50 00.62
  • Dec: +21 56 57.8
  • Discoverer: TDT
  • Discoverer Number: 3184
  • Components:
  • First year: 1991
  • Last year: 2010
  • Observations: 2
  • First position angle: 52
  • Last position angle: 171
  • First separation: 0.6
  • Last separation: 2.6
  • Mag first component: 11.35
  • Mag second component: 11.64
  • Spectral type:
  • Primary proper motion RA: 5
  • Primary proper motion DEC: -14
  • Secondary proper motion RA: 5
  • Secondary proper motion DEC: -14
  • Durchmusterung:
  • Notes: