Euctemon (Greek: Εὐκτήμων, gen. Εὐκτήμωνος; fl. 432 BC) was an Athenian astronomer. He was a contemporary of Meton and worked closely with this astronomer...

Euctemon is a lunar impact crater that is located in the northern part of the Moon, along the northwest rim of the crater Baillaud. To the southwest of...

Aglaonice Anaxagoras Archytas Aristaeus Callippus Cleostratus Democritus Euctemon Eudoxus Heraclides Hicetas Hippocrates of Chios Meton Oenopides Parmenides...

Attalus Autolycus Bion Callippus Cleomedes Cleostratus Conon Eratosthenes Euctemon Eudoxus Geminus Heraclides Hicetas Hipparchus Hippocrates of Chios Hypsicles...

Attalus Autolycus Bion Callippus Cleomedes Cleostratus Conon Eratosthenes Euctemon Eudoxus Geminus Heraclides Hicetas Hipparchus Hippocrates of Chios Hypsicles...

the Metonic cycle, was developed in Athens by the astronomers Meton and Euctemon (known to be active in 432 BC), could have been used to pattern the insertion...

Avienius, the ancient Greek traveller Euctemon recorded that thirty stadia separate [the Pillars of Hercules]; [Euctemon] says that they bristle with woods...

equation of the center in the Hipparchan model.) Before Hipparchus, Meton, Euctemon, and their pupils at Athens had made a solstice observation (i.e., timed...

years previously. Meton's observations were made in collaboration with Euctemon, about whom nothing else is known. The Greek astronomer Callippus expanded...

Attalus Autolycus Bion Callippus Cleomedes Cleostratus Conon Eratosthenes Euctemon Eudoxus Geminus Heraclides Hicetas Hipparchus Hippocrates of Chios Hypsicles...

there was mass apostasy (renunciation of the faith). At Smyrna, the bishop Euctemon sacrificed and encouraged others to do the same. Because the Church was...

only exceeded by records of the summer solstice of 432 BC, as noted by Euctemon and Meton. Timocharis worked with Aristillus in an astronomical observatory...

92.3 Glaucippus 409–408 92.4 Diocles Anytus is a strategos 408–407 93.1 Euctemon 407–406 93.2 Antigenes Alcibiades, Adeimantus, and Aristocrates are strategoi...

1935 Euclid (c. 300 BC) WGPSN Euctemon 76°16′N 30°34′E / 76.26°N 30.57°E / 76.26; 30.57 (Euctemon) 62.7 1935 Euctemon (flourished 432 BC) WGPSN Eudoxus...

philosopher, archon Euclid – mathematician Eucratides – Greco-Bactrian king Euctemon – astronomer Eudamidas I – King of Sparta Eudamidas II – King of Sparta...

the northwest is the crater Scoresby, and to the east are Baillaud and Euctemon. By convention these features are identified on lunar maps by placing the...

scholars: Thales, Anaxagoras, Pythagoras, Xenophanes, Democritus, Eudoxus, Euctemon, Callippus, Meton, Philippus, Hipparchus, and Aratus. However, Mattusch...

until a commission was appointed into the matter, moved by Euctemon and Diodorus. Euctemon and Diodorus gave information against the two trierarchs who...

into the Athenian calendar as a method of calculating dates. Working with Euctemon, he observes the summer solstice on 27 June. Pheidias completes the sculptures...

into the Athenian calendar as a method of calculating dates. Working with Euctemon, he observes the summer solstice on 27 June. Pheidias completes the sculptures...

Euclid's Optics Euclid of Megara Euclidean algorithm Euclidean geometry Euctemon Eudaemon Eudaimonia Eudamidas I Eudamidas II Eudamidas III Eudemian Ethics...

Onomacles was dispatched with part of the armament, and with Strombichides and Euctemon, to fight against Chios. E Elder (1873). A Dictionary of Greek and Roman...

immediately begins his speech by addressing the jury, and explains that Euctemon believes it is his duty to not only get satisfaction for his beliefs, but...

(411–410 BC) Glaucippus, Archon (410–409 BC) Diocles, Archon (409–408 BC) Euctemon, Archon (408–407 BC) Antigenes, Archon (407–406 BC) Callias Angelides,...

was in use (= 99 months). Shortly after Oenopides, in 432 BC, Meton and Euctemon discovered the better value of 18 years, equal to 223 months (the so-called...

of impacts, leaving a hilly ridge surrounding the interior. The crater Euctemon is intruding into the rim to the northeast, and the rim bulges outward...

Joseph Erlanger Luis Enrique Erro Ernest Esclangon T. H. E. C. Espin Euclid Euctemon Eudoxus of Cnidus Leonhard Euler Abraham ibn Ezra Daniel Gabriel Fahrenheit...

located near the northern limb of the Moon, to the north of the Baillaud–Euctemon crater pair. Due to its location, this crater appears very foreshortened...