A penumbral lunar eclipse took place on Thursday, June 27, 1991, the second of four lunar eclipses in 1991. The moon entered the Earth's penumbra for about 3 hours, and was difficult to see. This lunar eclipse is the predecessor of the Solar eclipse of July 11, 1991.
This eclipse is a member of Saros series 110. The previous event occurred on June 15, 1973. The next event was on July 7, 2009.
| Lunar eclipse series sets from 1991–1994 | ||||||||
|---|---|---|---|---|---|---|---|---|
| Ascending node | Descending node | |||||||
| Saros | Date Viewing |
Type Chart |
Gamma | Saros | Date Viewing |
Type Chart |
Gamma | |
| 110 | 1991 Jun 27
|
Penumbral
|
−1.40641 | 115 | 1991 Dec 21
|
Partial
|
0.97094 | |
| 120 | 1992 Jun 15
|
Partial
|
−0.62887 | 125 |
1992 Dec 9
|
Total
|
0.31438 | |
| 130 | 1993 Jun 4
|
Total
|
0.16376 | 135 |
1993 Nov 29
|
Total
|
−0.39941 | |
| 140 | 1994 May 25
|
Partial
|
0.89334 | 145 | 1994 Nov 18
|
Penumbral
|
−1.10479 | |
| Last set | 1991 Jul 26 | Last set | 1991 Jan 30 | |||||
| Next set | 1995 Apr 15 | Next set | 1995 Oct 08 | |||||
The Metonic cycle repeats nearly exactly every 19 years and represents a Saros cycle plus one lunar year. Because it occurs on the same calendar date, the Earth's shadow will be in nearly the same location relative to the background stars.
| Ascending node | Descending node |
|---|---|
|
|
|
|
A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros).[1] This lunar eclipse is related to two partial solar eclipses of Solar Saros 117.
| June 21, 1982 | July 1, 2000 |
|---|---|
|
|