Article ID: CBB205575975

A Possible Date for Ptolemy’s Development of a Model for the Second Lunar Anomaly (2019)

unapi

Ptolemy explicitly claims in the Almagest to have made 36 observations. For most of them, the date of the observation is determined by the kind of phenomenon observed, for example, the observation of a lunar eclipse or of an equinox. There are six observations, however, in which a particular date is not required by the nature of the phenomenon under investigation. In five of them, Ptolemy measures the longitude of each planet, without any particular requirement. In the sixth, he measures the longitude of a star. The aim of this paper is to show that these six observations belong to the set of observations that Ptolemy could have used for discovering the second lunar anomaly. Because all of them took place in the first half of year 139, one can presume that it was then when Ptolemy developed his model for the second lunar anomaly.

...More
Citation URI
https://data.isiscb.org/isis/citation/CBB205575975/

Similar Citations

Article Steele, J. M.; (2007)
Celestial Measurement in Babylonian Astronomy (/isis/citation/CBB000772410/)

Article Gonzalo L. Recio; Christián C. Carman; (2018)
On the Equant Point for the Planets and the Moon (/isis/citation/CBB284728633/)

Article Mozaffari, S. Mohammad; (2014)
Mu yī al-Dīn al-Maghribī's Lunar Measurements at the Maragha Observatory (/isis/citation/CBB001321050/)

Article Christián C. Carman; (2017)
Martianus Capella’s Calculation of the Size of the Moon (/isis/citation/CBB369881631/)

Article Guan, Yuzhen; (2015)
Eclipse Theory in the Jing chu li: Part I. the Adoption of Lunar Velocity (/isis/citation/CBB001202212/)

Article Mozaffari, S. Mohammad; (2014)
Biruni's Examination of the Path of the Centre of the Epicycle in Ptolemy's Lunar Model (/isis/citation/CBB001451067/)

Article Strom, Richard G.; (2008)
The Origin and Meaning of Colourful Descriptions in Chinese Astronomical Records (/isis/citation/CBB001034769/)

Book Aratus, ; (2010)
Phaenomena (/isis/citation/CBB001022955/)

Article Dobler, Hermann R.; (2002)
The Dating of Ptolemy's Star Catalogue (/isis/citation/CBB000202716/)

Book Alena Hadravová; Petr Hadrava; Kristen Lippincott; (2019)
The Stars in the Classical and Medieval Traditions (/isis/citation/CBB016821759/)

Article Duke, Dennis W.; (2002)
Dating the Almagest Star Catalogue Using Proper Motions: A Reconsideration (/isis/citation/CBB000200354/)

Article York, Tom J.; (2001)
An Analysis of Close Conjunctions Recorded in Ancient China (/isis/citation/CBB000102747/)

Article Bourtembourg, René; (2013)
Was Uranus Observed by Hipparchus? (/isis/citation/CBB001213867/)

Article Saturno, William A.; Stuart, David; Aveni, Anthony F.; Rossi, Franco; (2012)
Ancient Maya Astronomical Tables from Xultun, Guatemala (/isis/citation/CBB001320477/)

Article Goldstein, Bernard R.; (2013)
Planetary Velocities and the Astrological Month (/isis/citation/CBB001213872/)

Article Christián Carlos Carman; (2015)
The Planetary Increase of Brightness During Retrograde Motion: An Explanandum Constructed Ad Explanantem (/isis/citation/CBB287958080/)

Article Duke, Dennis; (2005)
Ptolemy's Treatment of the Outer Planets (/isis/citation/CBB000500497/)

Article Jones, Alexander; (2004)
A Route to the Ancient Discovery of Non-Uniform Planetary Motion (/isis/citation/CBB000773455/)

Article John Steele; (2019)
An Early Compilation of Saturn Observations from Babylon (/isis/citation/CBB365653299/)

Authors & Contributors
Carman, Christián Carlos
Steele, John M.
Mozaffari, S. Mohammad
Duke, Dennis W.
Recio, Gonzalo Luis
Gullberg, Steven
Concepts
Astronomy
Solar system; planets
Moon
Stars; stellar astronomy
Observation
Tables; catalogs; lists
Time Periods
Ancient
Medieval
5th century
Jin Dynasty (China, 265-420)
Precolumbian period (America)
Han dynasty (China, 202 B.C.-220 A.D.)
Places
Greece
China
Mesopotamia
Babylon (extinct city)
Middle and Near East
Guatemala
Institutions
Maragheh observatory
Comments

Be the first to comment!

{{ comment.created_by.username }} on {{ comment.created_on | date:'medium' }}

Log in or register to comment