Precession and the ISS

• ISS: bright and interesting satellite notably affected by precession.
• In mid-inclination (51.6°) orbit due to Baikonaur position.
• High Wycombe also at about 51°N has ISS:
  • Visible as evening object for a week or so.
  • Only in daylight.
  • Visible as morning object for a while.
  • Only in Earth's shadow (middle of night).
  • ...and round again.
• Closer to the equator they get four bites:
  • Ascending/descending (north/south bound) passes.
  • Morning and evening.