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
[edit]
Relations to other lunar eclipses
[edit]Eclipses of 1991
[edit]- 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
[edit]This eclipse is part of Saros cycle series 143.
Lunar year series
[edit]| 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
[edit]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
[edit]- Preceded: Lunar eclipse of December 19, 1983
- Followed: Lunar eclipse of March 13, 1998
See also
[edit]Notes
[edit]- ^ Hermit Eclipse: Saros cycle 143
- ^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros
External links
[edit]- 1991 Jan 30 chart Eclipse Predictions by Fred Espenak, NASA/GSFC
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