-
Johannes Phocylides Holwarda (Jan Fokkesz, Jan Fokker,
Johann Holwarda,
Johannes Fokkes Holwarda, Jan
Fokkens Holwarda, Jan
Fokkes van haylen) (February...
-
Coordinates 52°54′S 57°18′W / 52.9°S 57.3°W / -52.9; -57.3
Diameter 114 km
Depth 2.1 km
Colongitude 56° at
sunrise Eponym Johannes Phocylides Holwarda...
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Frisian chieftain who
ruled the
island of
Ameland Johannes Phocylides Holwarda (1618 in
Holwerd — 1651) a
Frisian astronomer, physician,
philosopher and...
- astronomers, the
first variable star was
identified in 1638 when
Johannes Holwarda noticed that
Omicron Ceti (later
named Mira)
pulsated in a
cycle taking...
-
Austrian jurist, mine
official (d. 1677)
February 19 –
Johannes Phocylides Holwarda,
Dutch astronomer (d. 1651)
March 4 –
George Louis,
Prince of N****au-Dillenburg...
-
Colonial governor of
Maryland (b. 1609)
January 22 –
Johannes Phocylides Holwarda,
Dutch astronomer (b. 1618)
January 29 –
Diego de Colmenares,
Spanish historian...
- 57.31°W / -52.79; -57.31 (Phocylides) 115.18 1935
Johannes Phocylides Holwarda (Jan Fokker) (1618–1651)
WGPSN Piazzi 36°10′S 68°01′W / 36.16°S 68.01°W...
-
Frans van S****en (1615–1660),
Dutch mathematician Johannes Phocylides Holwarda (1618-1651),
Dutch natural philosopher and
proponent of
atomism Christiaan...
- was a nova, but then saw it
again on
February 16, 1609. In 1638
Johannes Holwarda determined a
period of the star's reappearances,
eleven months; he is often...
- Fabricius, 1596;
variability may have been
first noted by
Johannes Fokkes Holwarda, 1638 2m.0 10m.1 8.1 332 d Mira
variable (M) "The miraculous" The first...
