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 | 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 150.
| January 25, 1982 | February 5, 2000 |
|---|---|
 |
 |
Tzolkinex
- Preceded: Lunar eclipse of December 19, 1983
- Followed: Lunar eclipse of March 13, 1998
See also
Notes
- ↑ Hermit Eclipse: Saros cycle 143
- ↑ 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
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