The following table contains the Besselian elements for the Partial Solar Eclipse of 2004 Apr 19 .
The global visibility of the eclipse is shown on an Orthographic Map .
Besselian Elements for the Partial Solar Eclipse of 2004 Apr 19
Non-Central Eclipse
Equatorial Conjunction: 12:30:29.2 TDT J.D. = 2453115.021171
(Sun & Moon in R.A.) (=12:29:24.6 UT)
Ecliptic Conjunction: 13:22:15.7 TDT J.D. = 2453115.057126
(Sun & Moon in Ec. Lo.) (=13:21:11.2 UT)
Instant of 13:35:05.0 TDT J.D. = 2453115.066030
Greatest Eclipse: (=13:34:00.4 UT)
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Gamma = -1.1335 Ephemerides = VSOP87/ELP2000-85
Eclipse Magnitude = 0.7367 Lunation No. = 53
ΔT = 64.6 s Saros Series = 119 (65/71)
Lunar Radius k1 = 0.272488 (Penumbra) Shift in Δb = 0.00"
Constants: k2 = 0.272281 (Umbra) Lunar Position: Δl = 0.00"
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Geocentric Coordinates of Sun & Moon at Greatest Eclipse (VSOP87/ELP2000-85):
Sun: R.A. = 01h50m58.6s Moon: R.A. = 01h52m50.5s
Dec. =+11°24'41.2" Dec. =+10°28'42.9"
Semi-Diameter = 15'55.2" Semi-Diameter = 15'01.7"
Eq.Hor.Par. = 08.8" Eq.Hor.Par. = 0°55'09.3"
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Polynomial Besselian Elements for: 2004 Apr 19 14:00:00.0 TDT (=t0)
n x y d l1 l2 μ
0 0.693210 -0.922184 11.41964 0.562626 0.016406 30.24731
1 0.4646470 0.2285186 0.013773 0.0000781 0.0000777 15.003358
2 -0.0000097 -0.0000259 -0.000003 -0.0000102 -0.0000102
3 -0.0000054 -0.0000028
Tan ƒ1 = 0.0046549 Tan ƒ2 = 0.0046317
At time t1 (decimal hours), each Besselian element is evaluated by:
a = a0 + a1*t + a2*t^2 + a3*t^3 (or a = Σ [an*t^n]; n = 0 to 3)
where: a = x, y, d, l1, l2, or μ
t = t1 - t0 (decimal hours) and t0 = 14.000 TDT
The Besselian elements were derived from a least-squares fit to elements
calculated at five uniformly spaced times over a six hour period centered at t0.
The Besselian elements are valid over the period 11.00 ≤ t0 ≤ 17.00 TDT.
Note that all times are expressed in Terrestrial Dynamical Time (TDT).
Saros Series 119: Member 65 of 71 eclipses in series.
Predictions for the Partial Solar Eclipse of 2004 Apr 19 were generated using the VSOP87/ELP2000-85 solar and lunar ephemerides and a value of ΔT = 64.6 seconds. The luanr coordinates have been calculated with respect to the Moon's Center of Mass. They DO NOT include a correction to the Center of Figure, or the effects of mountains and valleys along the edge of the Moon.
All eclipse calculations are by Fred Espenak, and he assumes full responsibility for their accuracy. Permission is freely granted to reproduce this data when accompanied by an acknowledgment:
"Eclipse Predictions by Fred Espenak, NASA's GSFC"
For more information, see: NASA Copyright Information
