A partial lunar eclipse took place on Monday, December 10, 1973, the last of four lunar eclipses in 1973. At maximum eclipse, a small bite out of the Moon should have been visible. The eclipse lasted for 1 hour, 8 minutes and 29.4 seconds, with just 10.069% of the Moon in shadow at maximum.^[1] It occurred near perigee, and as described, such event was known as a supermoon.

Visibility[edit]

Related lunar eclipses[edit]

Eclipses in 1973[edit]

• An annular solar eclipse on Thursday, 4 January 1973.
• A penumbral lunar eclipse on Thursday, 18 January 1973.
• A penumbral lunar eclipse on Friday, 15 June 1973.
• A total solar eclipse on Saturday, 30 June 1973.
• A penumbral lunar eclipse on Sunday, 15 July 1973.
• A partial lunar eclipse on Monday, 10 December 1973.
• An annular solar eclipse on Monday, 24 December 1973.

Lunar year series[edit]

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[edit]

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 122.

December 4, 1964	December 15, 1982

See also[edit]

• List of lunar eclipses
• List of 20th-century lunar eclipses

Notes[edit]

External links[edit]

• 1973 Dec 10 chart Eclipse Predictions by Fred Espenak, NASA/GSFC