September 1977 lunar eclipse
A penumbral lunar eclipse took place on September 27, 1977. At maximum eclipse, 90.076% of the Moon's disc was partially shaded by the Earth, which caused a slight shadow gradient across its disc; this subtle effect may have been visible to careful observers. No part of the Moon was in complete shadow. The eclipse lasted 4 hours, 17 minutes and 35.5 seconds overall.[1]
Visibility
Related lunar eclipses
Lunar year series
| Lunar eclipse series sets from 1977–1980 | ||||||||
|---|---|---|---|---|---|---|---|---|
| Ascending node | Descending node | |||||||
| Saros | Date Viewing |
Type Chart |
Gamma | Saros | Date Viewing |
Type Chart |
Gamma | |
| 112 | 1977 Apr 04 |
Partial |
-0.91483 | 117 | 1977 Sep 27 |
Penumbral |
1.07682 | |
| 122 | 1978 Mar 24 |
Total |
-0.21402 | 127 | 1978 Sep 16 |
Total |
0.29510 | |
| 132 | 1979 Mar 13 |
Partial |
0.52537 | 137 | 1979 Sep 06 |
Total |
-0.43050 | |
| 142 | 1980 Mar 01 |
Penumbral |
1.22701 | 147 | 1980 Aug 26 |
Penumbral |
-1.16082 | |
| Last set | 1976 May 13 | Last set | 1976 Nov 06 | |||||
| Next set | 1981 Jan 20 | Next set | 1980 Jul 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 solar eclipses of Solar Saros 124.
| September 22, 1968 | October 3, 1986 |
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See also
- List of lunar eclipses
- List of 20th-century lunar eclipses
Notes
- Hermit Eclipse: Saros cycle 117
- Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros
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