Centuries: 15th century - 16th century - 17th century
Decades: 1490s 1500s 1510s 1520s 1530s 1540s - 1550s - 1560s 1570s 1580s 1590s
Years: 1548 1549 1550 1551 1552 - 1553 - 1554 1555 1556 1557 1558
... years. Ptolemy's catalogue was based to some extent on an earlier one by Hipparchus from the 2nd century B.C. An even earlier star catalogue was that of Timocharis of ...
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