January 1999 lunar eclipse

A penumbral lunar eclipse took place on Sunday, January 31, 1999, the first of two lunar eclipses in 1999.

This was a relatively rare total penumbral lunar eclipse with the moon passing entirely within the penumbral shadow without entering the darker umbral shadow.^[1]

Visibility

Images

This simulated view compares this penumbral eclipse (left) to the full moon (right) as it appeared an hour before the eclipse.

Related lunar eclipses

Eclipses of 1999

A penumbral lunar eclipse on January 31.
An annular solar eclipse on February 16.
A partial lunar eclipse on July 28.
A total solar eclipse on August 11.

Lunar year series

Lunar eclipse series sets from 1998–2002
Descending node				Ascending node
Saros	Date Viewing	Type Chart	Gamma	Saros	Date Viewing	Type Chart	Gamma
109	1998 Aug 08	penumbral	1.4876	114	1999 Jan 31	penumbral	−1.0190
119	1999 Jul 28	partial	0.7863	124	2000 Jan 21	total	−0.2957
129	2000 Jul 16	total	0.0302	134	2001 Jan 09	total	0.3720
139	2001 Jul 05	partial	−0.7287	144	2001 Dec 30	penumbral	1.0732
149	2002 Jun 24	penumbral	−1.4440

Last set	1998 Sep 06			Last set	1998 Mar 13

Next set	2002 May 26			Next set	2002 Nov 20

Saros series

Lunar Saros series 114, repeating every 18 years and 11 days, has a total of 71 lunar eclipse events including 13 total lunar eclipses.

First Penumbral Lunar Eclipse: 0971 May 13

First Partial Lunar Eclipse: 1115 Aug 07

First Total Lunar Eclipse: 1458 Feb 28

First Central Lunar Eclipse: 1530 Apr 12

Greatest Eclipse of Lunar Saros 114: 1584 May 24

Last Central Lunar Eclipse: 1638 Jun 26

Last Total Lunar Eclipse: 1674 Jul 17

Last Partial Lunar Eclipse: 1890 Nov 26

Last Penumbral Lunar Eclipse: 2233 Jun 22

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 annular solar eclipses of Solar Saros 121.

January 26, 1990	February 7, 2008

Notes

^ Total Penumbral Lunar Eclipses, Jean Meeus, June 1980
^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros

External links

1999 Jan 31 chart Eclipse Predictions by Fred Espenak, NASA/GSFC
Saros cycle 114

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[1] Total Penumbral Lunar Eclipses, Jean Meeus, June 1980

[2] Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros

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