A partial lunar eclipse took place on Monday, April 4, 1977, the first of two lunar eclipses in 1977. Lasting 1 hour and 34.76 minutes, 19.289% of the Moon was in shadow at maximum.[1]
| Partial eclipse | |||||||||||||
| Date | 4 April 1977 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gamma | −0.91483 | ||||||||||||
| Magnitude | 0.19289 | ||||||||||||
| Saros cycle | 112 (63 of 72) | ||||||||||||
| Partiality | 94 minutes, 45.6 seconds | ||||||||||||
| Penumbral | 262 minutes, 57.7 seconds | ||||||||||||
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Visibilility
editIt was completely visible over North America, South America, Europe and Asia, seen rising over the Pacific and setting over the Middle East.
Related lunar eclipses
editEclipses in 1977
edit- A partial lunar eclipse on Monday, 4 April 1977.
- An annular solar eclipse on Monday, 18 April 1977.
- A penumbral lunar eclipse on Tuesday, 27 September 1977.
- A total solar eclipse on Wednesday, 12 October 1977.
Lunar year series
edit| 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 | |||||
Saros series
editLunar Saros series 112, repeating every 18 years and 11 days, has a total of 72 lunar eclipse events including 15 total lunar eclipses.
| Greatest | First | |||
|---|---|---|---|---|
| The greatest eclipse of the series occurred on 1490 Jun 02, lasting 100 minutes.[2] | Penumbral | Partial | Total | Central |
| 859 May 20 | 985 Aug 03 | 1364 Mar 18 | 1436 Apr 30 | |
| Last | ||||
| Central | Total | Partial | Penumbral | |
| 1562 Jul 16 | 1616 Aug 27 | 2013 Apr 25
|
2139 Jul 12 | |
There are 11 series events between 1901 and 2100, grouped into threes (called an exeligmos), each column with approximately the same viewing longitude on Earth.
| 1905 Feb 19 | 1923 Mar 3 | 1941 Mar 13 | |||
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| 1959 Mar 24 | 1977 Apr 04 | 1995 Apr 15 | |||
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| 2013 Apr 25 | 2031 May 07 | 2049 May 17 | |||
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| 2067 May 28 | 2085 Jun 08 | ||||
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Half-Saros cycle
editA lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros).[3] This lunar eclipse is related to two partial solar eclipses of Solar Saros 119.
| March 28, 1968 | April 9, 1986 |
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See also
editNotes
edit- ^ Hermit Eclipse: Saros cycle 112
- ^ Listing of Eclipses of series 112
- ^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros
External links
edit- 1977 Apr 04 chart Eclipse Predictions by Fred Espenak, NASA/GSFC
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