October 1968 lunar eclipse

A total lunar eclipse took place on October 6, 1968, the second of two total eclipses in 1968, the first was on April 13, 1968. The tables below contain detailed predictions and additional information on the Total Lunar Eclipse of October 6, 1968.

Eclipse Characteristics
ParameterValue
Penumbral Magnitude2.22423
Umbral Magnitude1.16913
Gamma0.36054
Epilson0.3345º
Opposition Times
EventCalendar Date & TimeJulian Date
Greatest Eclipse1968 Oct 06 at 11:42:35.0 TD (11:41:56.0 UT1)2440135.987453
Ecliptic Opposition1968 Oct 06 at 11:46:44.1 TD (11:46:05.2 UT1)2440135.990337
Equatorial Opposition1968 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)
CoordinateSunMoon
Right Ascension12h48m51.9s00h48m13.3s
Declination-05°14'36.0"+05°32'13.0"
Semi-Diameter16'00.2"15'10.1"
Eq. Hor. Parallax08.8"0°55'39.9"
Geocentric Libration of Moon
AngleValue
l4.6°
b-0.4°
c-21.4°
Earth's Shadows
ParameterValue
Penumbral Radius1.2062°
Umbral Radius0.6728°
Prediction Parameters
ParameterValue
EphemeridesJPL DE406
ΔT39.0 s
Shadow RuleDanjon
Shadow Enlargement1.010
Saros Series136 (17/72)
Total Lunar Eclipse
October 6, 1968
(No photo)

The moon passes west to east (right to left) across the Earth's umbral shadow, shown in hourly intervals.
Series136 (17 of 72)
Duration (hr:mn:sc)
Totality01h02m58.1s
Partial03h33m57.9s
Penumbral05h52m07.1s
Contacts (UTC)
P108:45:55.0
U109:54:55.4
U211:10:25.7
Greatest11:41:56.0
U312:13:23.8
U413:28:53.3
P414:38:02.1

Visibility

It was completely visible over Asia, Australia, and North America, seen rising over central Asia, and setting over central North America.

Lunar year series

Lunar eclipse series sets from 1966–1969
Descending node   Ascending node
Saros Date
Viewing
Type
Chart
Saros Date
Viewing
Type
Chart
111 1966 May 4
Penumbral
116 1966 Oct 29
Penumbral
121 1967 Apr 24
Total
126 1967 Oct 18
Total
131 1968 Apr 13
Total
136 1968 Oct 6
Total
141 1969 Apr 2
Penumbral
146 1969 Sep 25
Penumbral
Last set 1965 Jun 14 Last set 1965 Dec 8
Next set 1970 Feb 21 Next set 1969 Aug 27

Half-Saros cycle

A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros).[1] This lunar eclipse is related to two total solar eclipses of Solar Saros 143.

October 2, 1959 October 12, 1977

See also

Notes

  1. Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros


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