April 1977 lunar eclipse
Partial eclipse | |||||||||||||
Date | 4 April 1977 | ||||||||||||
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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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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]
Visibilility
[edit]It 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
[edit]Eclipses 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
[edit]Lunar 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 | |||
![]() | ![]() | ![]() | ![]() | ![]() | ![]() |
1959 Mar 24 | 1977 Apr 04 | 1995 Apr 15 | |||
![]() | ![]() | ![]() | ![]() | ![]() | ![]() |
2013 Apr 25 | 2031 May 07 | 2049 May 17 | |||
![]() | ![]() | ![]() | ![]() | ![]() | ![]() |
2067 May 28 | 2085 Jun 08 | ||||
![]() | ![]() |
Half-Saros cycle
[edit]A 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
[edit]Notes
[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