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Penumbral lunar eclipse August 15, 1962 From Wikipedia, the free encyclopedia
A penumbral lunar eclipse occurred at the Moon’s descending node of orbit on Wednesday, August 15, 1962,[1] with an umbral magnitude of −0.3615. A lunar eclipse occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. A penumbral lunar eclipse occurs when part or all of the Moon's near side passes into the Earth's penumbra. Unlike a solar eclipse, which can only be viewed from a relatively small area of the world, a lunar eclipse may be viewed from anywhere on the night side of Earth. Occurring about 1.6 days before perigee (on August 17, 1962, at 9:20 UTC), the Moon's apparent diameter was larger.[2]
| Penumbral eclipse | |||||||||
The Moon's hourly motion shown right to left | |||||||||
| Date | August 15, 1962 | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Gamma | −1.2210 | ||||||||
| Magnitude | −0.3615 | ||||||||
| Saros cycle | 147 (6 of 71) | ||||||||
| Penumbral | 198 minutes, 13 seconds | ||||||||
| |||||||||
The eclipse was completely visible over much of Africa, eastern Europe, most of Asia, western Australia, and Antarctica, seen rising over eastern South America, western Europe, and west Africa and setting over northeast Asia and eastern Australia.[3]
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Shown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.[4]
| Parameter | Value |
|---|---|
| Penumbral Magnitude | 0.59632 |
| Umbral Magnitude | −0.36153 |
| Gamma | −1.22104 |
| Sun Right Ascension | 09h39m23.3s |
| Sun Declination | +14°01'05.2" |
| Sun Semi-Diameter | 15'47.7" |
| Sun Equatorial Horizontal Parallax | 08.7" |
| Moon Right Ascension | 21h40m34.8s |
| Moon Declination | -15°12'55.5" |
| Moon Semi-Diameter | 16'29.4" |
| Moon Equatorial Horizontal Parallax | 1°00'31.1" |
| ΔT | 34.3 s |
This eclipse is part of an eclipse season, a period, roughly every six months, when eclipses occur. Only two (or occasionally three) eclipse seasons occur each year, and each season lasts about 35 days and repeats just short of six months (173 days) later; thus two full eclipse seasons always occur each year. Either two or three eclipses happen each eclipse season. In the sequence below, each eclipse is separated by a fortnight. The first and last eclipse in this sequence is separated by one synodic month.
| July 17 Descending node (full moon) | July 31 Ascending node (new moon) | August 15 Descending node (full moon) |
|---|---|---|
 |  | |
| Penumbral lunar eclipse Lunar Saros 109 | Annular solar eclipse Solar Saros 135 | Penumbral lunar eclipse Lunar Saros 147 |
This eclipse is a member of a semester series. An eclipse in a semester series of lunar eclipses repeats approximately every 177 days and 4 hours (a semester) at alternating nodes of the Moon's orbit.[5]
The lunar eclipses on May 3, 1958 (partial) and October 28, 1958 (penumbral) occur in the previous lunar year eclipse set, and the penumbral lunar eclipse on July 17, 1962 occurs in the next lunar year eclipse set.
| Lunar eclipse series sets from 1958 to 1962 | ||||||||
|---|---|---|---|---|---|---|---|---|
| Ascending node | Descending node | |||||||
| Saros | Date Viewing |
Type Chart |
Gamma | Saros | Date Viewing |
Type Chart |
Gamma | |
| 102 | 1958 Apr 04 |
Penumbral |
−1.5381 | |||||
| 112 | 1959 Mar 24 |
Partial |
−0.8757 | 117 | 1959 Sep 17 |
Penumbral |
1.0296 | |
| 122 | 1960 Mar 13 |
Total |
−0.1799 | 127 | 1960 Sep 05 |
Total |
0.2422 | |
| 132 | 1961 Mar 02 |
Partial |
0.5541 | 137 | 1961 Aug 26 |
Partial |
−0.4895 | |
| 142 | 1962 Feb 19 |
Penumbral |
1.2512 | 147 | 1962 Aug 15 |
Penumbral |
−1.2210 | |
This eclipse is a part of Saros series 147, repeating every 18 years, 11 days, and containing 70 events. The series started with a penumbral lunar eclipse on July 2, 1890. It contains partial eclipses from September 28, 2034 through May 27, 2431; total eclipses from June 6, 2449 through October 5, 2647; and a second set of partial eclipses from October 16, 2665 through May 1, 2990. The series ends at member 70 as a penumbral eclipse on July 28, 3145.
The longest duration of totality will be produced by member 37 at 105 minutes, 18 seconds on August 1, 2539. All eclipses in this series occur at the Moon’s descending node of orbit.[6]
| Greatest | First | |||
|---|---|---|---|---|
| The greatest eclipse of the series will occur on 2539 Aug 01, lasting 105 minutes, 18 seconds.[7] | Penumbral | Partial | Total | Central |
| 1890 Jul 02 |
2034 Sep 28 |
2449 Jun 06 |
2485 Jun 28 | |
| Last | ||||
| Central | Total | Partial | Penumbral | |
| 2593 Sep 02 |
2647 Oct 05 |
2990 May 01 |
3134 Jul 28 | |
Eclipses are tabulated in three columns; every third eclipse in the same column is one exeligmos apart, so they all cast shadows over approximately the same parts of the Earth.
| Series members 1–18 occur between 1890 and 2200: | |||||
|---|---|---|---|---|---|
| 1 | 2 | 3 | |||
| 1890 Jul 02 | 1908 Jul 13 | 1926 Jul 25 | |||
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| 4 | 5 | 6 | |||
| 1944 Aug 04 | 1962 Aug 15 | 1980 Aug 26 | |||
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| 7 | 8 | 9 | |||
| 1998 Sep 06 | 2016 Sep 16 | 2034 Sep 28 | |||
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| 10 | 11 | 12 | |||
| 2052 Oct 08 | 2070 Oct 19 | 2088 Oct 30 | |||
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| 13 | 14 | 15 | |||
| 2106 Nov 11 | 2124 Nov 21 | 2142 Dec 03 | |||
| 16 | 17 | 18 | |||
| 2160 Dec 13 | 2178 Dec 24 | 2197 Jan 04 | |||
A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros).[8] This lunar eclipse is related to two total solar eclipses of Solar Saros 154.
| August 9, 1953 | August 20, 1971 |
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