September 1977 lunar eclipse

A penumbral lunar eclipse took place on September 27, 1977. At maximum eclipse, 90.076% 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, 17 minutes and 35.5 seconds overall.^[1]

Visibility[]

Related lunar eclipses[]

Eclipses in 1977[]

A partial lunar eclipse on Monday, 4 April 1977.
An annular solar eclipse on Monday, 18 April 1977.
A penumbral lunar eclipse on Tuesday, 27 September 1977.
A total solar eclipse on Wednesday, 12 October 1977.

Lunar year series[]

Lunar eclipse series sets from 1977–1980
Ascending node				Descending node
Saros	Date Viewing	Type Chart	Gamma	Saros	Date Viewing	Type Chart	Gamma
112	1977 Apr 04	Partial	-0.91483	117	1977 Sep 27	Penumbral	1.07682
122	1978 Mar 24	Total	-0.21402	127	1978 Sep 16	Total	0.29510
132	1979 Mar 13	Partial	0.52537	137	1979 Sep 06	Total	-0.43050
142	1980 Mar 01	Penumbral	1.22701	147	1980 Aug 26	Penumbral	-1.16082

Last set	1976 May 13			Last set	1976 Nov 06

Next set	1981 Jan 20			Next set	1980 Jul 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 solar eclipses of Solar Saros 124.