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A291195 The number of total solar eclipses visible from Earth's surface during year n (TD). 1
1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1, 0, 1, 1, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1, 0, 1, 1, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1, 1, 0, 1, 1, 1, 0, 1, 0, 0, 0, 0, 1, 0, 1, 1, 1, 0, 1, 1, 0, 1, 1, 1, 0, 1, 0, 0, 0, 0, 1, 0, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 0, 1, 0, 0, 0, 0, 1, 0, 1, 1, 1, 0, 2, 1, 0, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET
-1999,102
COMMENTS
The moment of the 'greatest eclipse,' defined as when the axis of the moon's shadow cone is closest to Earth's center, is used for determining this sequence.
Important Note: The dates and times in the data described below are in Terrestrial Dynamical Time (TD). Adjustment is required for Universal Time.
Hybrid eclipses, which are total on some parts of their paths and annular on other parts, are NOT counted here.
The 5000 sequence values in the b-file were derived from the NASA catalog (describing 11898 solar eclipses of all types, historical or predicted, during this time period, 2000 BCE to 3000 CE).
There are 3173 total solar eclipses and 569 hybrid solar eclipses during this 5000-year period.
All 5000 terms in the b-file are known (within reason). Although, for example, eclipse #528 in the Espenak & Meeus link is listed as happening at 23:51:46 on Dec 31 -1787, well within the computed uncertainty of 48 minutes for that date, no such instances occur with total eclipses. Indeed, all are within several standard errors. - Charles R Greathouse IV, Aug 10 2020
REFERENCES
P. J. Huber, Modeling the length of day and extrapolating the rotation of the Earth, Astronomical Amusements, Edited by F. Bonoli, S. De Meis, & A. Panaino, Rome, (2000). Cited in Espenak & Meeus.
LINKS
P. J. Huber, Modeling the length of day and extrapolating the rotation of the Earth, Journal of Geodesy volume 80 (2006), pp. 283-303.
CROSSREFS
Sequence in context: A062735 A054547 A202717 * A025439 A227840 A116852
KEYWORD
nonn
AUTHOR
Rick L. Shepherd, Aug 20 2017
STATUS
approved

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Last modified March 29 11:45 EDT 2024. Contains 371278 sequences. (Running on oeis4.)