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September 1969 lunar eclipse

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A penumbral lunar eclipse took place on Thursday, September 25, 1969, the last of three penumbral lunar eclipses in 1969, the first being on Wednesday, April 2, and the second being on Wednesday, August 27. At maximum eclipse, 90% of the Moon's disc was partially shaded by the Earth, which caused a slight shadow gradient across its disc; this subtle effect may have been visible to careful observers. No part of the Moon was in complete shadow. The eclipse lasted 4 hours and 5 minutes overall.[1]

Visibility

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It was completely visible over Europe, Africa, Asia and Australia.

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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

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).[2] This lunar eclipse is related to two partial solar eclipses of Solar Saros 153.

September 20, 1960 October 2, 1978

Tzolkinex

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See also

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Notes

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  1. ^ Hermit Eclipse: Saros cycle 146
  2. ^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros
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