Solar Eclipse Prime Page

Partial Solar Eclipse of 1986 Apr 09

Fred Espenak

Introduction


The Partial Solar Eclipse of 1986 Apr 09 is visible from the following geographic regions:

  • Partial Eclipse: East Indies, Australia, Antarctica

The map to the right depicts the geographic regions of eclipse visibility. Click on the map to enlarge it. For an explanation of the features appearing in the map, see Key to Solar Eclipse Maps.

The instant of greatest eclipse takes place on 1986 Apr 09 at 06:21:22 TD (06:20:27 UT1). This is 4.2 days before the Moon reaches apogee. During the eclipse, the Sun is in the constellation Aries. The synodic month in which the eclipse takes place has a Brown Lunation Number of 783.

The eclipse belongs to Saros 119 and is number 64 of 71 eclipses in the series. All eclipses in this series occur at the Moon’s ascending node. The Moon moves southward with respect to the node with each succeeding eclipse in the series and gamma decreases.

This is a very deep partial eclipse. It has an eclipse magnitude of 0.8236, while Gamma has a value of -1.0822.

The partial solar eclipse of 1986 Apr 09 is followed two weeks later by a total lunar eclipse on 1986 Apr 24.

These eclipses all take place during a single eclipse season.

The eclipse predictions are given in both Terrestrial Dynamical Time (TD) and Universal Time (UT1). The parameter ΔT is used to convert between these two times (i.e., UT1 = TD - ΔT). ΔT has a value of 55.0 seconds for this eclipse.

The following links provide maps and data for the eclipse.

The tables below contain detailed predictions and additional information on the Partial Solar Eclipse of 1986 Apr 09 .


Eclipse Data: Partial Solar Eclipse of 1986 Apr 09

Eclipse Characteristics
Parameter Value
Eclipse Magnitude 0.82362
Eclipse Obscuration 0.75723
Gamma-1.08215
Conjunction Times
Event Calendar Date & Time Julian Date
Greatest Eclipse 1986 Apr 09 at 06:21:22.4 TD (06:20:27.4 UT1) 2446529.764206
Ecliptic Conjunction 1986 Apr 09 at 06:09:02.6 TD (06:08:07.6 UT1) 2446529.755644
Equatorial Conjunction 1986 Apr 09 at 05:14:50.1 TD (05:13:55.1 UT1) 2446529.717999
Geocentric Coordinates of Sun and Moon
1986 Apr 09 at 06:21:22.4 TD (06:20:27.4 UT1)
Coordinate Sun Moon
Right Ascension01h10m32.0s01h12m23.9s
Declination+07°29'00.7"+06°36'30.3"
Semi-Diameter 15'58.1" 14'59.5"
Eq. Hor. Parallax 08.8" 0°55'01.4"
Geocentric Libration of Moon
Angle Value
l 3.6°
b 1.3°
c -20.7°
Prediction Paramaters
Paramater Value
Ephemerides JPL DE406
ΔT 55.0 s
k (penumbra) 0.2725076
k (umbra) 0.2722810
Saros Series 119 (64/71)

Explanation of Solar Eclipse Data Tables

Penumbral Shadow Contacts and Extremes: Partial Solar Eclipse of 1986 Apr 09

Contacts of Penumbral Shadow with Earth
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
First External ContactP104:10:36.404:09:41.470°27.2'S049°38.1'E
Last External ContactP408:32:39.008:31:44.015°51.5'S140°20.2'E
Extreme Northern and Southern Path Limits of Penumbra
Contact Event Contact Time
TD
Time
UT1
Latitude Longitude
North Extreme Path Limit 1N104:46:05.404:45:10.458°35.2'S031°31.5'E
South Extreme Path Limit 1S107:57:04.407:56:09.403°21.8'S150°56.3'E

Explanation of Penumbral Shadow Contacts and Extremes Tables

Polynomial Besselian Elements: Partial Solar Eclipse of 1986 Apr 09

Polynomial Besselian Elements
1986 Apr 09 at 06:00:00.0 TD (=t0)
n x y d l1 l2 μ
0 0.34348 -1.04254 7.4805 0.56416 0.01791 269.5712
1 0.45629 0.24138 0.0149 0.00009 0.00009 15.0040
2 -0.00001 -0.00000 -0.0000 -0.00001 -0.00001 -0.0000
3 -0.00001 -0.00000 - - - -
Tan ƒ1 0.0046690
Tan ƒ2 0.0046457

At time t1 (decimal hours), each besselian element is evaluated by:

x = x0 + x1*t + x2*t2 + x3*t3 (or x = Σ [xn*tn]; n = 0 to 3)

where: t = t1 - t0 (decimal hours) and t0 = 6.000

Explanation of Polynomial Besselian Elements

Links for the Partial Solar Eclipse of 1986 Apr 09

Links to Additional Solar Eclipse Information

Eclipse Predictions

Predictions for the Partial Solar Eclipse of 1986 Apr 09 were generated using the JPL DE406 solar and lunar ephemerides. The lunar coordinates were calculated with respect to the Moon's Center of Mass. The predictions are given in both Terrestrial Dynamical Time (TD) and Universal Time (UT1). The parameter ΔT is used to convert between these two times (i.e., UT1 = TD - ΔT). ΔT has a value of 55.0 seconds for this eclipse.

Acknowledgments

Some of the content on this website is based on the book Thousand Year Canon of Solar Eclipses 1501 to 2500. All eclipse calculations are by Fred Espenak, and he assumes full responsibility for their accuracy.

Permission is granted to reproduce eclipse data when accompanied by a link to this page and an acknowledgment:

"Eclipse Predictions by Fred Espenak, www.EclipseWise.com"

The use of diagrams and maps is permitted provided that they are NOT altered (except for re-sizing) and the embedded credit line is NOT removed or covered.