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78 lines
3.5 KiB
Plaintext
78 lines
3.5 KiB
Plaintext
Eclipse Predictions by Fred Espenak, NASA's GSFC
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Collected from:
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https://web.archive.org/web/20080311001653/http://sunearth.gsfc.nasa.gov/eclipse/SEcat5/catalog.html
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Key:
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https://web.archive.org/web/20070820134803/http://sunearth.gsfc.nasa.gov/eclipse/SEcat5/catkey.html
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Column Heading Definition/Description
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1 Catalog Sequential number of the eclipse in the catalog links to
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Number the map published in the
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Five Millennium Canon of Solar Eclipses: -1999 to +3000.
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2 Calendar Calendar Date at instant of Greatest Eclipse.
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Date Gregorian Calendar is used for dates after 1582 Oct 15.
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Julian Calendar is used for dates before 1582 Oct 04.
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3 TD of Dynamical Time (TD) of Greatest Eclipse, the instant
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Greatest when the axis of the Moon's shadow cone passes closest
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Eclipse to Earth's center.
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4 ΔT Delta T (ΔT) is the arithmetic difference between
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Dynamical Time and Universal Time. It is a measure of
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the accumulated clock error due to the variable
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rotation period of Earth.
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5 Luna Lunation Number is the number of synodic months since
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Num New Moon of 2000 Jan 06. The Brown Lunation Number
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can be determined by adding 953.
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6 Saros Saros series number of eclipse.
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Num (Each eclipse in a Saros is separated by an interval
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of 18 years 11.3 days.)
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7 Ecl. Eclipse Type where:
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Type P = Partial Eclipse.
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A = Annular Eclipse.
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T = Total Eclipse.
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H = Hybrid or Annular/Total Eclipse.
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Second character in Eclipse Type:
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"m" = Middle eclipse of Saros series.
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"n" = Central eclipse with no northern limit.
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"s" = Central eclipse with no southern limit.
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"+" = Non-central eclipse with no northern limit.
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"-" = Non-central eclipse with no southern limit.
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"2" = Hybrid path begins total and ends annular.
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"3" = Hybrid path begins annular and ends total.
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"b" = Saros series begins (first eclipse in series).
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"e" = Saros series ends (last eclipse in series).
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8 Gamma Distance of the shadow cone axis from the center
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of Earth (units of equatorial radii) at the
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instant of greatest eclipse.
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9 Ecl. Eclipse magnitude is the fraction of the Sun's
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Mag. diameter obscured by the Moon. For annular, total and
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hybrid eclipses, this value is actually the diameter
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ratio of Moon/Sun.
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10 Lat. Latitude where greatest eclipse is seen.
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11 Long. Longitude where greatest eclipse is seen.
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12 Sun Sun's altitude at greatest eclipse.
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Alt
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13 Sun Sun's azimuth at greatest eclipse.
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Azm
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14 Path Width of the path of totality or annularity
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Width at greatest eclipse (kilometers).
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15 Central Central Line Duration of total or annular phase
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Dur. at greatest eclipse.
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