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122:"Aristyllus, a Greek astronomer, who appears to have lived about B.C. 233. He wrote a work on the fixed stars (τηρήσις ἀπλανῶν), which was used by Hipparchus and Ptolemy, and he is undoubtedly one of the two persons of this name who wrote commentaries on Aratus."
56:(c. 300 BC). He was among the earliest meridian-astronomy observers. Six of his stellar declinations are preserved at Almajest 7.3. All are exactly correct within his over-cautious rounding to 1/4 degree. See discussion (and lessons) at
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102:"Aristyllus was an early astronomer in the school of Alexandria. Little is known about him. He made astronomical observations during the first half of the third century BCE, and was probably a pupil of Timocharis."
63:
Aristyllus was long mis-dated to c. 300 BC (which made his data look among the poorest of the ancients); but when his correct date was found by least-squares (Isis 73:259-265 p. 263), it was
105:"Aristyllus and Timocharis are usually considered to have compiled the first true catalog of the fixed stars, in which stars are identified by numerical measurements of their positions."
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that his star declinations' accuracy was unexcelled in antiquity. His data suggest that he worked in
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Hockey, T.; Bracher, K.; Bolt, M.; Trimble, V.; Palmeri, J.A.; Jarrell, R.; Marché, J.D.; Ragep, F.J. (2007).
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Dictionary of Greek and Roman
Biography and Mythology
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72:‡3 Table 3 p. 45 (2004).
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178:. Springer. p. 62.
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284:Astronomers
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725:Influenced
704:Influences
675:Octaeteris
604:Triquetrum
492:Timocharis
477:Theodosius
437:Posidonius
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387:Heraclides
327:Aristyllus
312:Apollonius
307:Andronicus
237:2014-12-10
212:2014-12-10
191:2014-12-10
126:References
81:Aristillus
54:Timocharis
50:astronomer
46:Ἀρίστυλλος
38:Aristyllus
18:Aristillus
579:Astrolabe
512:(Ptolemy)
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407:Hypsicles
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347:Callippus
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292:Aglaonice
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392:Hicetas
382:Geminus
377:Eudoxus
332:Attalus
297:Agrippa
87:Sources
70:DIO 4.1
58:DIO 7.1
695:Zodiac
645:Equant
594:Gnomon
472:Thales
467:Strabo
317:Aratus
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417:Meton
362:Conon
42:Greek
942:stub
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342:Bion
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