January 1991 lunar eclipse

A penumbral lunar eclipse took place on Wednesday, January 30, 1991, the first of four lunar eclipses in 1991.[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 143.

Lunar year series

Lunar eclipse series sets from 1988–1991
Descending node					Ascending node
Saros	Date viewing	Type chart	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 150.

January 25, 1982	February 5, 2000

Tzolkinex

• Preceded: Lunar eclipse of December 19, 1983

• Followed: Lunar eclipse of March 13, 1998

See also

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

Notes

1. Hermit Eclipse: Saros cycle 143
2. Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros

External links

• 1991 Jan 30 chart Eclipse Predictions by Fred Espenak, NASA/GSFC