Besseliam Elements for the Total Solar Eclipse of 2010 Jul 11

Fred Espenak

The following table contains the Besseliam elements for the Total Solar Eclipse of 2010 Jul 11 .

The geographic coordinates of the eclipse path are in the Path Table . The global visibility of the eclipse is shown on an Orthographic Map . The features of this map are described in the Key to Solar Eclipse Path Tables. The path of the eclipse is displayed in greater detail on a Google Map .


            

Besselian Elements for the Total Solar Eclipse of 2010 Jul 11

Equatorial Conjunction: 19:52:01.3 TDT J.D. = 2455389.327793 (Sun & Moon in R.A.) (=19:50:55.1 UT) Ecliptic Conjunction: 19:41:33.5 TDT J.D. = 2455389.320527 (Sun & Moon in Ec. Lo.) (=19:40:27.3 UT) Instant of 19:34:37.6 TDT J.D. = 2455389.315713 Greatest Eclipse: (=19:33:31.4 UT) --------------------------------------------------------------------------- Gamma = -0.6788 Ephemerides = JPL DE200/LE200 Eclipse Magnitude = 1.0580 Lunation No. = 130 ΔT = 66.2 s Saros Series = 146 (27/76) Lunar Radius k1 = 0.272508 (Penumbra) Shift in Δb = 0.00" Constants: k2 = 0.272281 (Umbra) Lunar Position: Δl = 0.00" --------------------------------------------------------------------------- Geocentric Coordinates of Sun & Moon at Greatest Eclipse (JPL DE200/LE200): Sun: R.A. = 07h23m57.6s Moon: R.A. = 07h23m15.8s Dec. =+22°02'11.0" Dec. =+21°22'29.3" Semi-Diameter = 15'43.9" Semi-Diameter = 16'26.7" Eq.Hor.Par. = 08.7" Eq.Hor.Par. = 1°00'20.9" --------------------------------------------------------------------------- Polynomial Besselian Elements for: 2010 Jul 11 20:00:00.0 TDT (=t0) n x y d l1 l2 μ 0 0.074100 -0.717031 22.03570 0.534443 -0.011656 118.61432 1 0.5572523 -0.1366581 -0.005341 -0.0000908 -0.0000904 15.000069 2 -0.0000276 -0.0001121 -0.000005 -0.0000124 -0.0000123 3 -0.0000090 0.0000024 Tan ƒ1 = 0.0045988 Tan ƒ2 = 0.0045759 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 = 20.000 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 17.00 ≤ t0 ≤ 23.00 TDT. Note that all times are expressed in Terrestrial Dynamical Time (TDT). Saros Series 146: Member 27 of 76 eclipses in series.

Total Solar Eclipse of 2010 Jul 11


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Acknowledgments

Predictions for the Total Solar Eclipse of 2010 Jul 11 were generated using the JPL DE200/LE200 solar and lunar ephemerides and a value of ΔT = 66.2 seconds. The accuracy of the northern and southern edges of the eclipse path are limited to approximately 1-2 kilometers due to the lunar limb profile.

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

2009 Sep 11