Johannes Phocylides Holwarda (1618-1651) was a Frisian astronomer, physician, and philosopher who served as a professor of philosophy at the University of Franeker from 1639 until his death. He is remembered for discovering the periodic behavior of the star Mira, determining through systematic observation that it disappears and reappears on a cycle of roughly three hundred thirty days.
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1. Johannes Phocylides Holwarda (Wikidata)
P570 (date of death): year
+1651-01-22T00:00:00Z
P570 (date of death): full date
+1651-01-22T00:00:00Z
P27 (country of citizenship): Dutch Republic
Q170072
P20 (place of death): Franeker, Netherlands
Q41974
P19 (place of birth): Holwert, Netherlands
Q611277
View the SourceJohannes Phocylides Holwarda (Wikipedia)
Works In: Astronomy, LeadQuote, Works In: Astronomy, Lead
was a Frisian astronomer
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