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.

Eclipses of 1999

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

See also

Notes

  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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