Total Lunar Eclipse of 1968 Oct 06

Fred Espenak

Introduction


The Total Lunar Eclipse of 1968 Oct 06 is visible from the following geographic regions:

  • Asia, Australia, Pacific, Americas

The diagram to the right depicts the Moon's path with respect to Earth's umbral and penumbral shadows. Below it is a map showing the geographic regions of eclipse visibility. Click on the figure to enlarge it. For an explanation of the features appearing in the figure, see Key to Lunar Eclipse Figures.

The instant of greatest eclipse takes place on 1968 Oct 06 at 11:42:35 TD (11:41:56 UT1). This is 5.2 days before the Moon reaches apogee. During the eclipse, the Moon is in the constellation Pisces. The synodic month in which the eclipse takes place has a Brown Lunation Number of 566.

The eclipse belongs to Saros 136 and is number 17 of 72 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.

The total lunar eclipse of 1968 Oct 06 is preceded two weeks earlier by a total solar eclipse on 1968 Sep 22.

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., TD = UT1 + ΔT). ΔT has a value of 39.0 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 Total Lunar Eclipse of 1968 Oct 06 .


Eclipse Data: Total Lunar Eclipse of 1968 Oct 06

Eclipse Characteristics
Parameter Value
Penumbral Magnitude 2.22423
Umbral Magnitude 1.16913
Gamma 0.36054
Epsilon 0.3345°
Opposition Times
Event Calendar Date & Time Julian Date
Greatest Eclipse 1968 Oct 06 at 11:42:35.0 TD (11:41:56.0 UT1) 2440135.987453
Ecliptic Opposition 1968 Oct 06 at 11:46:44.1 TD (11:46:05.2 UT1) 2440135.990337
Equatorial Opposition 1968 Oct 06 at 12:05:11.4 TD (12:04:32.4 UT1) 2440136.003153
Geocentric Coordinates of Sun and Moon
1968 Oct 06 at 11:42:35.0 TD (11:41:56.0 UT1)
Coordinate Sun Moon
Right Ascension12h48m51.9s00h48m13.3s
Declination-05°14'36.0"+05°32'13.0"
Semi-Diameter 16'00.2" 15'10.1"
Eq. Hor. Parallax 08.8" 0°55'39.9"
Geocentric Libration of Moon
Angle Value
l 4.6°
b -0.4°
c -21.4°
Earth's Shadows
Parameter Value
Penumbral Radius 1.2062°
Umbral Radius 0.6728°
Prediction Paramaters
Paramater Value
Ephemerides JPL DE406
ΔT 39.0 s
Shadow Rule Danjon
Shadow Enlargement 1.010
Saros Series 136 (17/72)

Explanation of Lunar Eclipse Data Tables

Eclipse Contacts: Total Lunar Eclipse of 1968 Oct 06

Lunar Eclipse Contacts
Eclipse Event Contact Time
TD
Time
UT1
Zenith Latitude Zenith Longitude Position Angle Axis Distance
Penumbral BeginsP108:46:34.008:45:55.004°48.5'N135°51.9'W 254.6° 1.4602°
Partial BeginsU109:55:34.409:54:55.405°05.6'N152°37.7'W 262.6° 0.9263°
Total BeginsU211:11:04.711:10:25.705°24.4'N170°58.3'W 294.2° 0.4201°
Greatest EclipseGreatest11:42:35.011:41:56.005°32.2'N178°37.5'W 331.4° 0.3345°
Total EndsU312:14:02.812:13:23.805°40.0'N173°43.9'E 8.6° 0.4198°
Partial EndsU413:29:32.313:28:53.305°58.7'N155°23.5'E 40.2° 0.9248°
Penumbral EndsP414:38:41.114:38:02.106°15.7'N138°35.6'E 48.1° 1.4578°
Eclipse Durations
Eclipse Phase Duration
Penumbral (P4 - P1)05h52m07.1s
Partial (U4 - U1)03h33m57.9s
Total (U3 - U2)01h02m58.1s

Explanation of Lunar Eclipse Contacts Table

Polynomial Besselian Elements: Total Lunar Eclipse of 1968 Oct 06

Polynomial Besselian Elements
1968 Oct 06 at 12:00:00.0 TD (=t0)
n x y d f1 f2 f3
0 -0.03675 0.36090 -0.0916 1.20610 0.67266 0.25277
1 0.42490 0.23165 -0.0003 -0.00033 -0.00034 -0.00009
2 -0.00015 -0.00013 0.0000 0.00000 0.00000 0.00000
3 -0.00000 -0.00000 - - - -

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 = 12.000

Explanation of Besselian Elements

Links for the Total Lunar Eclipse of 1968 Oct 06

Links to Additional Lunar Eclipse Information

Eclipse Predictions

Predictions for the Total Lunar Eclipse of 1968 Oct 06 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 39.0 seconds for this eclipse.

Acknowledgments

Some of the content on this web site is based on the book Thousand Year Canon of Lunar 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.