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October 1968 lunar eclipse

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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.
Series 136 (17 of 72)
Gamma 0.36054
Magnitude 1.16913
Duration (hr:mn:sc)
Totality 01h02m58.1s
Partial 03h33m57.9s
Penumbral 05h52m07.1s
Contacts (UTC)
P1 08:45:55.0
U1 09:54:55.4
U2 11:10:25.7
Greatest 11:41:56.0
U3 12:13:23.8
U4 13:28:53.3
P4 14:38:02.1

A total lunar eclipse took place on Sunday, 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
Parameter Value
Penumbral magnitude 2.22423
Umbral magnitude 1.16913
Gamma 0.36054
Epilson 0.3345º
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 ascension 12h48m51.9s 00h48m13.3s
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 parameters
Parameter Value
Ephemerides JPL DE406
ΔT 39.0 s
Shadow rule Danjon
Shadow enlargement 1.010
Saros series 136 (17/72)

Visibility

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

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Lunar year series

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Lunar eclipse series sets from 1966–1969
Descending node   Ascending node
Saros Date
Viewing
Type
Chart
Gamma Saros Date
Viewing
Type
Chart
Gamma
111 1966 May 4
Penumbral
1.05536 116 1966 Oct 29
Penumbral
−1.05999
121 1967 Apr 24
Total
0.29722 126 1967 Oct 18
Total
−0.36529
131 1968 Apr 13
Total
−0.41732 136 1968 Oct 6
Total
0.36054
141 1969 Apr 2
Penumbral
−1.17648 146 1969 Sep 25
Penumbral
1.06558
Last set 1965 Jun 14 Last set 1965 Dec 8
Next set 1970 Feb 21 Next set 1969 Aug 27

Saros series

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It was part of Saros series 136.

Tritos series

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Tzolkinex

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Half-Saros cycle

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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

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Notes

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