September 1969 lunar eclipse

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

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

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

September 20, 1960 October 2, 1978
gollark: Amazing.
gollark: I bet there's something for them on npm.
gollark: Rationals have issues. You can't do square roots, for example.
gollark: In a sense, osmarks internet radio™ is just an arbitrarily long base256 number.
gollark: Solution: use infinitely long numbers.

See also

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


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