ASTRONOMER
Ptolemy
100 - 170
Ptolemy
Claudius Ptolemy (; Ancient Greek: Πτολεμαῖος, Ptolemaios; Latin: Claudius Ptolemaeus; c. 100 – 160s/170s AD) was a Greco-Roman mathematician, astronomer, astrologer, geographer, and music theorist who wrote about a dozen scientific treatises, three of which were important to later Byzantine, Islamic, and Western European science. The first was his astronomical treatise now known as the Almagest, originally entitled Mathēmatikḗ Syntaxis (Μαθηματικὴ Σύνταξις, Mathēmatikḗ Syntaxis, lit. 'Mathematical Treatise'). The second is the Geography, which is a thorough discussion on maps and the geographic knowledge of the Greco-Roman world. The third is the astrological treatise in which he attempted to adapt horoscopic astrology to the Aristotelian natural philosophy of his day. Read more on Wikipedia
His biography is available in different languages on Wikipedia. Ptolemy is the 5th most popular astronomer, the 6th most popular biography from Egypt and the most popular Egyptian Astronomer.
Ptolemy is most famous for his geocentric model of the universe, which he proposed in his book, "Almagest." In this model, the earth is at the center of the universe and all other celestial bodies orbit around it.
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Among ASTRONOMERS
Among astronomers, Ptolemy ranks 5 out of 644. Before him are Galileo Galilei, Nicolaus Copernicus, Johannes Kepler, and Giordano Bruno. After him are Edmond Halley, Tycho Brahe, Anders Celsius, Heinrich Wilhelm Matthias Olbers, William Herschel, Aristarchus of Samos, and Hipparchus.
Most Popular Astronomers in Wikipedia
Go to all Rankings
Galileo Galilei
1564 - 1642
HPI: 95.08
Rank: 1
Nicolaus Copernicus
1473 - 1543
HPI: 93.78
Rank: 2
Johannes Kepler
1571 - 1630
HPI: 89.24
Rank: 3
Giordano Bruno
1548 - 1600
HPI: 88.57
Rank: 4
Ptolemy
100 - 170
HPI: 87.07
Rank: 5
Edmond Halley
1656 - 1742
HPI: 85.55
Rank: 6
Tycho Brahe
1546 - 1601
HPI: 83.46
Rank: 7
Anders Celsius
1701 - 1744
HPI: 83.19
Rank: 8
Heinrich Wilhelm Matthias Olbers
1758 - 1840
HPI: 80.29
Rank: 9
William Herschel
1738 - 1822
HPI: 80.07
Rank: 10
Aristarchus of Samos
311 BC - 230 BC
HPI: 79.89
Rank: 11
Hipparchus
190 BC - 120 BC
HPI: 79.75
Rank: 12
Contemporaries
Among people born in 100, Ptolemy ranks 1. After him are Justin Martyr, Pope Alexander I, Longinus, Joseph of Arimathea, Pope Hyginus, Pope Telesphorus, Pope Victor I, Saint Sarah, James the Less, Decebalus, and Dionysius the Areopagite. Among people deceased in 170, Ptolemy ranks 1. After him are Apuleius, Salvius Julianus, Junius Rusticus, and Alexander of Abonoteichus.
Others Born in 100
Go to all RankingsPtolemy
ASTRONOMER
100 - 170
HPI: 87.07
Rank: 1
Justin Martyr
RELIGIOUS FIGURE
100 - 165
HPI: 82.33
Rank: 2
Pope Alexander I
RELIGIOUS FIGURE
100 - 116
HPI: 79.74
Rank: 3
Longinus
RELIGIOUS FIGURE
100 - 100
HPI: 77.39
Rank: 4
Joseph of Arimathea
RELIGIOUS FIGURE
100 - 96
HPI: 77.32
Rank: 5
Pope Hyginus
RELIGIOUS FIGURE
100 - 142
HPI: 75.67
Rank: 6
Pope Telesphorus
RELIGIOUS FIGURE
100 - 137
HPI: 75.54
Rank: 7
Pope Victor I
RELIGIOUS FIGURE
100 - 199
HPI: 74.96
Rank: 8
Saint Sarah
RELIGIOUS FIGURE
100 - 100
HPI: 74.94
Rank: 9
James the Less
RELIGIOUS FIGURE
100 - 62
HPI: 74.86
Rank: 10
Decebalus
POLITICIAN
100 - 106
HPI: 74.60
Rank: 11
Dionysius the Areopagite
RELIGIOUS FIGURE
100 - 100
HPI: 73.94
Rank: 12
Others Deceased in 170
Go to all RankingsPtolemy
ASTRONOMER
100 - 170
HPI: 87.07
Rank: 1
Apuleius
WRITER
125 - 170
HPI: 80.60
Rank: 2
Salvius Julianus
POLITICIAN
115 - 170
HPI: 63.83
Rank: 3
Junius Rusticus
POLITICIAN
100 - 170
HPI: 60.06
Rank: 4
Alexander of Abonoteichus
WRITER
105 - 170
HPI: 57.19
Rank: 5
In Egypt
Among people born in Egypt, Ptolemy ranks 6 out of 642. Before him are Cleopatra (-69), Moses (-1393), Euclid (-350), Tutankhamun (-1341), and Nefertiti (-1400). After him are Khufu (-2700), Akhenaten (-1400), Hypatia (350), Origen (185), Hatshepsut (-1507), and Amenhotep III (-1403).
Others born in Egypt
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Cleopatra
POLITICIAN
69 BC - 30 BC
HPI: 98.34
Rank: 1
Moses
RELIGIOUS FIGURE
1393 BC - 1273 BC
HPI: 93.26
Rank: 2
Euclid
MATHEMATICIAN
350 BC - 240 BC
HPI: 90.02
Rank: 3
Tutankhamun
RELIGIOUS FIGURE
1341 BC - 1323 BC
HPI: 88.82
Rank: 4
Nefertiti
COMPANION
1400 BC - 1330 BC
HPI: 87.28
Rank: 5
Ptolemy
ASTRONOMER
100 - 170
HPI: 87.07
Rank: 6
Khufu
ARCHITECT
2700 BC - 2570 BC
HPI: 86.57
Rank: 7
Akhenaten
POLITICIAN
1400 BC - 1336 BC
HPI: 85.92
Rank: 8
Hypatia
MATHEMATICIAN
350 - 415
HPI: 84.85
Rank: 9
Origen
PHILOSOPHER
185 - 254
HPI: 84.46
Rank: 10
Hatshepsut
POLITICIAN
1507 BC - 1458 BC
HPI: 84.03
Rank: 11
Amenhotep III
POLITICIAN
1403 BC - 1350 BC
HPI: 83.80
Rank: 12
Among ASTRONOMERS In Egypt
Among astronomers born in Egypt, Ptolemy ranks 1. After him are Sosigenes of Alexandria (-80), and Timocharis (-320).
Ptolemy
100 - 170
HPI: 87.07
Rank: 1
Sosigenes of Alexandria
80 BC - 100 BC
HPI: 73.54
Rank: 2
Timocharis
320 BC - 260 BC
HPI: 61.49
Rank: 3
