Fixed criteria:
  • Target H ≥ 22 mag.
  • Target flybye no more then 30 days ago and no later then in 14 days at distance 75 LD or less.
  • Target altitude ≥ 20° above horizon.
    Filter rules:
  • Target apparent magnitude or brighter.
  • Target galactic absolute latitude ° or more.
  • Darkness: Daylight Civil twilight/dawn Nautical twilight/dawn Astronomical twilight/dawn Night
  • Moon below horizon or illuminated of % or less.

  • TIME COND SPEED ALT V Δ SOT MOT ☽ b 3σ UT "/sec ° mag LD ° ° % ° "