A penumbral lunar eclipse took place on Thursday, January 18, 1973, the first of four lunar eclipses in 1973, the second being with a penumbral lunar eclipse on Friday, June 15, the third being with a penumbral lunar eclipse on Sunday, July 15, and the last being with a partial lunar eclipse on Monday, December 10.[1]

Visibility

Relation to other lunar eclipses

Eclipses in 1973

Lunar year series

Lunar eclipse series sets from 1969–1973
Ascending node   Descending node
Saros Date
Viewing		 Type
Chart		 Gamma Saros Date
Viewing		 Type
Chart		 Gamma
108 1969 Aug 27
 Penumbral
 −1.54066 113 1970 Feb 21
 Partial
 0.96198
118 1970 Aug 17
 Partial
 −0.80534 123 1971 Feb 10
 Total
 0.27413
128 1971 Aug 6
 Total
 −0.07944 133 1972 Jan 30
 Total
 −0.42729
138 1972 Jul 26
 Partial
 0.71167 143 1973 Jan 18
 Penumbral
 −1.08446
148 1973 Jul 15
 Penumbral
 1.51782
Last set 1969 Sep 25 Last set 1969 Apr 2
Next set 1973 Jun 15 Next set 1973 Dec 10

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 150.

January 14, 1964 January 25, 1982

See also

Notes

  1. ↑ Saros series 118
  2. ↑ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros


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