Besseliam Elements for the Annular Solar Eclipse of 2020 Jun 21

Fred Espenak

The following table contains the Besseliam elements for the Annular Solar Eclipse of 2020 Jun 21 .

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 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 Annular Solar Eclipse of 2020 Jun 21

Equatorial Conjunction: 06:42:34.5 TDT J.D. = 2459021.779565 (Sun & Moon in R.A.) (=06:41:25.1 UT) Ecliptic Conjunction: 06:42:36.6 TDT J.D. = 2459021.779591 (Sun & Moon in Ec. Lo.) (=06:41:27.3 UT) Instant of 06:41:15.4 TDT J.D. = 2459021.778650 Greatest Eclipse: (=06:40:06.0 UT) --------------------------------------------------------------------------- Gamma = 0.1209 Ephemerides = JPL DE405 Eclipse Magnitude = 0.9940 Lunation No. = 253 ΔT = 69.4 s Saros Series = 137 (36/70) 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 DE405): Sun: R.A. = 06h01m33.0s Moon: R.A. = 06h01m30.2s Dec. =+23°26'09.7" Dec. =+23°32'56.7" Semi-Diameter = 15'44.2" Semi-Diameter = 15'24.0" Eq.Hor.Par. = 08.7" Eq.Hor.Par. = 0°56'31.1" --------------------------------------------------------------------------- Polynomial Besselian Elements for: 2020 Jun 21 07:00:00.0 TDT (=t0) n x y d l1 l2 μ 0 0.154260 0.136404 23.43567 0.552336 0.006148 284.53555 1 0.5311528 0.0513871 -0.000233 -0.0001223 -0.0001217 14.999111 2 0.0000258 -0.0001609 -0.000006 -0.0000107 -0.0000107 3 -0.0000069 -0.0000008 Tan ƒ1 = 0.0046009 Tan ƒ2 = 0.0045780 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 = 7.000 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 4.00 ≤ t0 ≤ 10.00 TDT. Note that all times are expressed in Terrestrial Dynamical Time (TDT). Saros Series 137: Member 36 of 70 eclipses in series.


   Instant of 
Greatest Eclipse:       Time =  06:40:06.0 UT       Lat = 30°31.2'N      Long = 079°39.9'E
      (GE)               Sun Altitude =  82.9°          Path Width =  21.2 km
                          Sun Azimuth = 174.2°    Central Duration =   00m38.2s


   Instant of 
Greatest Duration:      Time =    04:48:28 UT       Lat =   01°16'N      Long =   017°48'E
      (GD)               Sun Altitude =   0.0°          Path Width =  85.2 km
                          Sun Azimuth =  66.6°    Central Duration =   01m22.4s


Additional Links: Annular Solar Eclipse of 2020 Jun 21


Eclipse Predictions

Predictions for the Annular Solar Eclipse of 2020 Jun 21 were generated using the JPL DE405 solar and lunar ephemerides and a value of ΔT = 69.4 seconds.

Acknowledgments

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


Solar Eclipse Links

2014 Feb 24