gods-eye-view/changelog.d/1453-satellite-launch-year.md

• Space Missions no longer shows an older satellite with a similar name and a different known launch year as a new payload's orbit: the launch-year check on loaded satellites now runs (Aditya, @Rohilalala, #1453).
• Satellite launch years come from one TLE designator parser for both the loaded catalog and the active-TLE fallback; a blank designator is an unknown year instead of 2000 (#1453).