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Annular and Total Solar Eclipses of 2003On Saturday, 2003 May 31, an annular eclipse of the Sun will be visible from a broad corridor that traverses the North Atlantic. The path of the Moon's antumbral shadow begins in northern Scotland, crosses Iceland and central Greenland, and ends at sunrise in Baffin Bay (Canada). A partial eclipse will be seen within the much broader path of the Moon's penumbral shadow, which includes most of Europe, the Middle East, central and northern Asia, and northwestern North America. The trajectory of the Moon's shadow is quite unusual during this event. The shadow axis passes to the far north where it barely grazes Earth's surface. In fact, the northern edge of the antumbra actually misses Earth so that one path limit is defined by the day/night terminator rather than by the shadow's upper edge. As a result, the track of annularity has a peculiar "D" shape that is nearly 1200 kilometers wide. Since the eclipse occurs just three weeks prior to the northern summer solstice, Earth's northern axis is pointed sunwards by 22.8 deg. As seen from the Sun, the antumbral shadow actually passes between the North Pole and the terminator. As a consequence of this extraordinary geometry, the path of annularity runs from east to west rather than the more typical west to east. The event transpires near the Moon's ascending node in Taurus five degrees north of Aldebaran. Since apogee occurs three days earlier (May 28 at 13 UT), the Moon's apparent diameter (29.6 arc-minutes) is still too small to completely cover the Sun (31.6 arc-minutes) resulting in an annular eclipse.
Document ID
20020094308
Acquisition Source
Goddard Space Flight Center
Document Type
Technical Publication (TP)
Authors
Espenak, Fred
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Anderson, Jay
(Environment Canada Winnipeg, Manitoba Canada)
Date Acquired
September 7, 2013
Publication Date
October 1, 2002
Subject Category
Astronomy
Report/Patent Number
NASA/TP-2002-211618
Rept-2003-00184-0
NAS 1.60:211618
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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