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Hipparchus was born in Nicaea (Ancient Greek: Νίκαια), in Bithynia.The exact dates of his life are not known, but Ptolemy attributes astronomical observations to him in the period from 147 to 127 BC, and some of these are stated as made in Rhodes; earlier observations since 162 BC might also have been made by him.
An exceptionally accurate eclipse cycle from this point of view is one of 1154.5 years (43 inex minus 5 saros), which is much closer to a whole number of anomalistic months (15303.00005) than the interval of Hipparchus. At the solar eclipse of October 17, 1781, the moon had an anomaly of 0°, [5] and similar eclipses have occurred every 1054.5 ...
The Hipparchus star catalog is a list of at least 850 stars that also contained coordinates of stellar positions in the sky, based on celestial equatorial latitude and longitude. [1] According to British classicist Thomas Heath , Hipparchus was the first to employ such a method to map the stars, at least in the West. [ 2 ]
The shadow will be traveling at an average of about 2,300 miles per hour across NY state and will only take about 10 minutes, from one side of state to the other.
A scroll in the lower left panel of the map is inscribed with instructions on how to use the map and a lunar distance measurement to calculate longitude: it states that by observing the edge of the Moon's disc in relation to a known star, or a lunar eclipse, it is possible to calculate longitude at the point of observation by calculating local ...
c. 134 BC — Hipparchus makes a detailed star map; c. 150 — Ptolemy completes his Almagest, which contains a catalog of stars, observations of planetary motions, and treatises on geometry and cosmology; c. 705 — Dunhuang Star Chart, a manuscript star chart from the Mogao Caves at Dunhuang
A rare total solar eclipse will cut a 115-mile-wide path April 8 across North America, but less than a week before it happens, new research suggests fewer Hoosiers could experience the totality ...
A woman views a map showing the eclipse path during the Solar Eclipse Festival at the California Science Center in Los Angeles, California, on August 19, 2017, two days before the total eclipse on ...