Solar eclipse of September 7, 1820

Solar eclipse of September 7, 1820
Map
Type of eclipse
Nature	Annular
Gamma	0.8251
Magnitude	0.9329
Maximum eclipse
Duration	349 sec (5 m 49 s)
Coordinates	51°36′N 8°42′E / 51.6°N 8.7°E / 51.6; 8.7
Max. width of band	432 km (268 mi)
Times (UTC)
Greatest eclipse	13:59:58
References
Saros	122 (47 of 70)
Catalog # (SE5000)	9091

An 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 (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[]

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.