Solar eclipse of September 7, 1820
Annular Solar eclipse September 7, 1820
51°36′N 8°42′E / 51.6°N 8.7°E / 51.6; 8.7An annular solar eclipse occurred on September 7, 1820. A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby totally or partly obscuring the image of the Sun for a viewer on Earth. An annular solar eclipse occurs when the Moon's apparent diameter is smaller than the Sun's, blocking most of the Sun's light and causing the Sun to look like an annulus (ring). An annular eclipse appears as a partial eclipse over a region of the Earth thousands of kilometres wide.
Observation and prediction
This map was drawn in the book Elementa eclipsium, published in Prague in 1816, by Franz Ignaz Cassian Hallaschka (František Ignác Kassián Halaška) (1780-1847), contained maps of the paths of solar eclipses from 1816 and 1860. The geometric constructions used by Hallaschka anticipated the standard theory of eclipses later developed by Friedrich Wilhelm Bessel.[1]
Related eclipses
It is a part of solar Saros 122.
Notes
- ^ Historical eclipses in Europe
References
Wikimedia Commons has media related to Solar eclipse of 1820 September 7.
- NASA chart graphics
- Googlemap
- NASA Besselian elements
- Cassian Hallaschka (1816). Elementa eclipsium, quas patitur tellus, luna eam inter et solem versante ab anno 1816 usque ad annum 1860: ex tabulis astronomicis recentissime conditis et calculo parallactico deducta, typo ecliptico et tabulis proiectionis geographicis collustrata. Haase.
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