When Was Ptolemy Born

PtolemyBornc. 100 AD Egypt, Roman EmpireDiedc. 170 (aged 69–70) AD Alexandria, Egypt, Roman EmpireCitizenshipRoman, ethnicity- Greco-EgyptianKnown forPtolemaic universe Ptolemy’s world map Ptolemy’s theorem

When was Claudius Ptolemy born and died?

PtolemyBornc. 100 AD Egypt, Roman EmpireDiedc. 170 (aged 69–70) AD Alexandria, Egypt, Roman EmpireCitizenshipRoman, ethnicity- Greco-EgyptianKnown forPtolemaic universe Ptolemy’s world map Ptolemy’s theorem

When was Hipparchus born?

Hipparchus was born in Nicaea, Bithynia (now Iznik, Turkey), circa 190 B.C. He spent much of his time in Rhodes, Greece.