For other people named Agrippa, see Agrippa. Agrippa may refer to: Menenius Agrippa, a Roman consul in 503 BC. Marcus Vipsanius Agrippa (63–12 BC), Roman statesman and general, friend of Augustus Caesar. ...
The Pleiades, observed by Agrippa in 92 AD
Agrippa (unkn-fl. 92 AD) was a Greekastronomer. The only thing that is known about him regards an astronomical observation that he made in 92 AD, which is cited by Ptolemy (Almagest, VII, 3). Ptolemy writes that in the twelfth year of the reign of Domitian, on the seventh day of the Bithynian month Metrous, Agrippa observed the occultation of a part of the Pleiades by the southernmost part of the Moon. The Pleiades. ... The Pleiades. ... In ancient Greece and other early civilizations, astronomy consisted largely of astrometry, measuring positions of stars and planets in the sky. ... Claudius Ptolemaeus, given contemporary German styling, in a 16th century engraved book frontispiece . Claudius Ptolemaeus (Greek: ΚλαÏδιος Πτολεμαῖος; ca. ... Almagest is Latin form of the Arabic name (al-kitabu-l-mijisti, i. ... Titus Flavius Domitianus (24 October 51 – 18 September 96), commonly known as Domitian, was a Roman emperor of the gens Flavia. ... Bithynia was an ancient province in the northwest of Asia Minor, adjoining the Propontis, the Thracian Bosporus and the Black Sea (Euxine). ... The Pleiades, dominated by hot blue stars surrounded by reflection nebulosity The Pleiades (pleye-a-deez or plee-a-deez, also known as M45, or the Seven Sisters) is an open cluster in the constellation of Taurus. ... Crust composition Oxygen 43% Silicon 21% Aluminium 10% Calcium 9% Iron 9% Magnesium 5% Titanium 2% Nickel 0. ...
The purpose of Agrippa's observation was probably to check the precession of the equinoxes, which was discovered by Hipparchus. There are two types of precession: torque-free precession and torque-induced precession. ... Illumination of Earth by Sun on the day of equinox In astronomy, an equinox is defined as the moment when the sun reaches one of two intersections between the ecliptic and the celestial equator. ... Hipparchus (Greek ἻππαÏχος) (ca. ...
The lunar crater Agrippa is named after him. Agrippa is a lunar impact crater that is located at the southeast edge of the Mare Vaporum. ...
The hair having by some unknown means disappeared, Conon of Samos, the mathematician and astronomer, explained the phenomenon in courtly phrase, by saying that it had been carried to the heavens and placed among the stars.
By Aristobulus she was the mother of Herod Agrippa I. Her second husband, Theudion, uncle on the mother's side of Antipater, son of Herod I., having been put to death for conspiring against Herod, she married Archelaus.
Berenice, daughter of Agrippa I., king of Judaea, and born probably about A.D. She was first married to Marcus, son of the alabarch 1 Alexander of Alexandria.
Astronomers at the Mount Wilson Observatory determined in 1915 that Sirius B was a white dwarf, the first to be discovered.
In 2005, using the Hubble Space Telescope, astronomers determined Sirius B to be 12,000 kilometers (7,500 miles) in diameter, with a mass that is 98% of the Sun.
Careful research reveals there may have been cultural contamination on the part of visiting astronomers who went to the region to observe a transit of Venus, though this is still a matter of some dispute.
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