Agrippa (astronomer)

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Agrippa (Greek : Ἀγρίππας; fl.92 AD ) was a Greek astronomer. The only thing that is known about him regards an astronomical observation that he made in 92 AD. [1] 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. [2]

The purpose of Agrippa's observation was probably to check the precession of the equinoxes, which was discovered by Hipparchus. [3]

The lunar crater Agrippa is named after him. [4]

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References

  1. Ptolemy. Almagest. VII, 3.
  2. Jodra, Serge (2004–2017). "Agrippa". Imago Mundi (in French). Retrieved 27 June 2019.
  3. Royal Irish Academy (1964). Proceedings of the Royal Irish Academy: Archaeology, linguistics and literature. Section C. Hodges, Figgis. pp. 155–157.
  4. Chong, S. M.; Lim, Albert; Ang, P. S. (25 July 2002). Photographic Atlas of the Moon. Cambridge University Press. p. 129. ISBN   9780521813921.