20521+4923

  • Unique Name: 20521+4923ES 811
  • RA: 20 52 05.96
  • Dec: +49 21 49.1
  • Discoverer: ES
  • Discoverer Number: 811
  • Components:
  • First year: 1909
  • Last year: 2010
  • Observations: 12
  • First position angle: 138
  • Last position angle: 159
  • First separation: 2.0
  • Last separation: 1.4
  • Mag first component: 10.34
  • Mag second component: 10.43
  • Spectral type: G0
  • Primary proper motion RA: -43
  • Primary proper motion DEC: -16
  • Secondary proper motion RA: -43
  • Secondary proper motion DEC: -16
  • Durchmusterung: +48 3230
  • Notes: