July 1991 lunar eclipse

Penumbral lunar eclipse July 26, 1991

A penumbral lunar eclipse took place on Friday, July 26, 1991, the third of four lunar eclipses in 1991. This was the 2nd member of Lunar Saros 148. The previous event was on 15 July 1973, and the 1st eclipse of the series. The next event was on 6 August 2009.^[1]

Visibility

Relations to other lunar eclipses

Eclipses of 1991

An annular solar eclipse on January 15.
A penumbral lunar eclipse on January 30.
A penumbral lunar eclipse on June 27.
A total solar eclipse on July 11.
A penumbral lunar eclipse on July 26.
A partial lunar eclipse on December 21.

Saros series

This eclipse is part of Saros cycle series 148.

Lunar year series

Lunar eclipse series sets from 1988–1991
Descending node				Ascending node
Saros	Date	Type Viewing	Gamma	Saros	Date Viewing	Type Chart	Gamma
113	1988 Mar 03	Penumbral	0.98855	118	1988 Aug 27	Partial	−0.86816
123	1989 Feb 20	Total	0.29347	128	1989 Aug 17	Total	−0.14905
133	1990 Feb 09	Total	−0.41481	138	1990 Aug 06	Partial	0.63741
143	1991 Jan 30	Penumbral	−1.07522	148	1991 Jul 26	Penumbral	1.43698

Last set	1987 Apr 14			Last set	1987 Oct 07

Next set	1991 Dec 21			Next set	1991 Jun 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 155.

July 20, 1982	July 31, 2000

Notes

^ Hermit Eclipse: Saros cycle 148
^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros

External links

1991 Jul 26 chart Eclipse Predictions by Fred Espenak, NASA/GSFC

Lunar eclipses

Lists of lunar eclipses

Lunar eclipses
by era

Modern era
- 20th
- 21st
Future
- 22nd

Lunar eclipses
by saros series

Partial eclipses

Total eclipses

Penumbral eclipses

Partial	23 Mar 1940 22 Apr 1940 16 Oct 1940 1951 Feb 21 1951 Mar 23 1951 Aug 17 1951 Sep 15 1955 Jan 08 1955 Jun 05 1958 Apr 04 1958 Oct 27 1959 Sep 17 1962 Feb 19 1962 Jul 17 1962 Aug 15 1965 Dec 08 1966 May 04 1966 Oct 29 1969 Apr 02 1969 Aug 27 1969 Sep 25 1973 Jan 18 1973 Jun 15 1973 Jul 15 1976 Nov 06 1977 Sep 27 1980 Mar 01 1980 Jul 27 1980 Aug 26 1983 Dec 20 1984 May 15 1984 Jun 13 1984 Nov 08 1987 Apr 14 1987 Oct 07 1991 Jan 30 1991 Jun 27 1991 Jul 26 1994 Nov 18 1995 Oct 08 1998 Mar 13 1998 Aug 08 1998 Sep 06 2001 Dec 30 2002 May 26 2002 Jun 24 2002 Nov 20 2005 Apr 24 2009 Feb 09 2009 Jul 07 2009 Aug 06 2012 Nov 28 2013 May 25 2013 Oct 18 2016 Mar 23 2016 Aug 18 2016 Sep 16 2017 Feb 11 2020 Jan 10 2020 Jun 05 2020 Jul 05 2020 Nov 30 2023 May 05 2024 Mar 25 → 2027 Feb 20 2027 Jul 18 2027 Aug 17 2030 Dec 09 2031 May 07 2031 Jun 05 2031 Oct 30 2034 Apr 03 2035 Feb 22 2038 Jan 21 2038 Jun 17 2038 Jul 16 2038 Dec 11 2042 Apr 05 2042 Oct 28 2045 Mar 03 2045 Aug 27 2048 Dec 20 2049 May 17 2049 Jun 15 2049 Nov 09 2052 Apr 14 2053 Mar 04 2060 Nov 08 2107 May 7
Total	1963 Jan 09 1981 Jan 20 1988 Mar 03 1999 Jan 31 2006 Mar 14 → 2053 Aug 29 2070 Apr 25

Partial