Which navigational error increases when using a deteriorated medieval astrolabe without accounting for precession?

💡 Explanation

When precession is unaccounted for, star positions gradually shift over centuries because Earth's axis wobbles, significantly impacting star altitude measurements that rely on accurately aligned astrolabe components. Therefore star alignment becomes flawed, rather than azimuth, lunar phases or equation of time corrections which are less directly impacted by precession drifts.

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