June 1973 lunar eclipse

A penumbral lunar eclipse took place on Friday, June 15, 1973, the second of four lunar eclipses in 1973, lasting over 3 hours. This very subtle penumbral eclipse was essentially invisible to the naked eye; though it lasted 3 hours, 24 minutes and 39.8 seconds, just 46.852% of the Moon's disc was in partial shadow (with no part of it in complete shadow). The Moon was only 0.2 days after apogee (Apogee on Friday, June 15, 1973 at 05:04 p.m. UTC), making it 6.5% smaller than average.[1]

June 1973 lunar eclipse
Penumbral eclipse
Date15 June 1973
Gamma-1.32166
Magnitude0.46852
Saros cycle110 (69 of 72)
Penumbral204 minutes, 39.8 seconds
Contacts (UTC)
P119:07:37.7
Greatest20:49:57.5
P422:32:17.5

Visibility

It was completely visible over eastern South America, Europe, Africa, the Indian Ocean, Asia and Australia, seen rising over the Atlantic Ocean and eastern South America, and setting over eastern Asia, western Pacific, and Australia.

Eclipses in 1973

Lunar year series
Lunar eclipse series sets from 1973–1976
Ascending node   Descending node
Saros Date
Viewing		 Type
Chart		 Gamma Saros Date
Viewing		 Type
Chart		 Gamma
110 1973 Jun 15
 Penumbral
 -1.32166 115 1973 Dec 10
 Partial
 0.96441
120 1974 Jun 04
 Partial
 -0.54887 125 1974 Nov 29
 Total
 0.30540
130 1975 May 25
 Total
 0.23674 135 1975 Nov 18
 Total
 -0.41343
140 1976 May 13
 Partial
 0.95860 145 1976 Nov 06
 Penumbral
 -1.12760
Last set 1973 Jul 15 Last set 1973 Jan 18
Next set 1977 Apr 04 Next set 1977 Sep 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 117.

June 10, 1964 June 21, 1982

See also

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


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