July 1991 lunar eclipse
A penumbral lunar eclipse took place on Friday, July 26, 1991, the third of four lunar eclipses in 1991. This was the 2nd member of Lunar Saros 148. The previous event was on 15 July 1973, and the 1st eclipse of the series. The next event will be on 6 August 2009.[1]
Visibility
Relations to other lunar eclipses
Eclipses of 1991
Saros series
This eclipse is part of Saros cycle series 148.
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 155.
| July 20, 1982 | July 31, 2000 |
|---|---|
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gollark: Wait, data visualization *in a memory card*? What?
gollark: Interesting.
gollark: I guess flash memory made on larger nodes *is* apparently more radiation resistant, but... bees?
gollark: Is this some sort of weird big-SD-card standard?
gollark: This was done, although it's considered an emergency backup backup only as it is probably unreliable due to impact damage.
See also
- List of lunar eclipses
- List of 20th-century lunar eclipses
Notes
- Hermit Eclipse: Saros cycle 148
- Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros
External links
- 1991 Jul 26 chart Eclipse Predictions by Fred Espenak, NASA/GSFC
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