The eclipse's character then changes to total along the section of the path where the umbral vertex extends beneath Earth's surface. They occur when the vertex of the Moon's umbral shadow pierces Earth's surface along the central path of an annular eclipse. Hybrid eclipses are also known as annular/total eclipses. However, for annular eclipses, the instant of greatest duration may occur at either the time of greatest eclipse or near the sunrise and sunset points of the eclipse path. The data presented in the catalog are based on theįive Millennium Canon of Solar Eclipses: -1999 to +3000.ĭefined as the instant when the axis of the Moon's shadow passesįor total eclipses, the instant of greatest eclipse is virtually identical to the instants of greatest magnitude and greatest duration. The Sun's altitude is always 0° at this location. The geographic latitude and longitude of the umbra are given for greatest eclipse, along with the Sun's altitude and azimuth, the width of the path (kilometers) and the central line duration of totality or annularity.įor both partial and non-central umbral/antumbral eclipses, the latitude and longitude correspond to the point closest to the shadow cone axis at Gamma is the distance of the shadow axis from Earth's center at greatest eclipse while the eclipse magnitude is defined as the fraction of the Sun's diameter obscured at that instant. ![]() The lunation number (since 2000 Jan 06) and the Saros series are listed along with the eclipse type (P=Partial, A=Annular, T=Total or H=Hybrid) ![]() The calendar date and Dynamical Time of the instant of greatest eclipse are found in the first two columns.ĭelta T (ΔT) gives the arithmetic difference between Dynamical Time and Universal Time. Tables of solar eclipse local circumstances include the following data. Key to Catalog of Solar Eclipses Five Millennium Canon of Solar Eclipses Introduction
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