The following table contains the Besselian elements for the Total Solar Eclipse of 2042 Apr 20 .
The geographic coordinates of the eclipse path are listed in the Path Table . The global visibility of the eclipse is shown on an Orthographic Map . The path of the eclipse is displayed in greater detail on an Google Map .
Besselian Elements for the Total Solar Eclipse of 2042 Apr 20
Equatorial Conjunction: 02:32:32.2 TDT J.D. = 2466994.605928
(Sun & Moon in R.A.) (=02:31:06.6 UT)
Ecliptic Conjunction: 02:20:31.3 TDT J.D. = 2466994.597584
(Sun & Moon in Ec. Lo.) (=02:19:05.7 UT)
Instant of 02:17:29.6 TDT J.D. = 2466994.595481
Greatest Eclipse: (=02:16:04.0 UT)
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Gamma = 0.2955 Ephemerides = VSOP87/ELP2000-85
Eclipse Magnitude = 1.0614 Lunation No. = 523
ΔT = 85.6 s Saros Series = 139 (31/71)
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. = 01h52m12.4s Moon: R.A. = 01h51m39.9s
Dec. =+11°31'19.4" Dec. =+11°47'27.8"
Semi-Diameter = 15'55.3" Semi-Diameter = 16'37.6"
Eq.Hor.Par. = 08.8" Eq.Hor.Par. = 1°01'01.4"
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Polynomial Besselian Elements for: 2042 Apr 20 02:00:00.0 TDT (=t0)
n x y d l1 l2 μ
0 -0.282225 0.190458 11.51744 0.534682 -0.011399 210.25865
1 0.5204294 0.2561877 0.013670 0.0000561 0.0000558 15.003451
2 0.0000416 -0.0000819 -0.000002 -0.0000128 -0.0000127
3 -0.0000085 -0.0000044
Tan ƒ1 = 0.0046542 Tan ƒ2 = 0.0046311
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 = 2.000 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 -1.00 ≤ t0 ≤ 5.00 TDT.
Note that all times are expressed in Terrestrial Dynamical Time (TDT).
Saros Series 139: Member 31 of 71 eclipses in series.
Instant of Greatest Eclipse: Time = 02:16:04.0 UT Lat = 26°56.9'N Long = 137°18.8'E (GE) Sun Altitude = 72.7° Path Width = 210.4 km Sun Azimuth = 151.2° Central Duration = 04m51.0s Instant of Greatest Duration: Time = 02:19:54 UT Lat = 27°59'N Long = 138°27'E (GD) Sun Altitude = 72.5° Path Width = 209.7 km Sun Azimuth = 159.0° Central Duration = 04m51.2s
Predictions for the Total Solar Eclipse of 2042 Apr 20 were generated using the VSOP87/ELP2000-85 solar and lunar ephemerides and a value of ΔT = 85.6 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
