June 1947 lunar eclipse
| Partial eclipse | |||||||||||||
 The Moon's hourly motion shown right to left | |||||||||||||
| Date | June 3, 1947 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gamma | −0.9850 | ||||||||||||
| Magnitude | 0.0202 | ||||||||||||
| Saros cycle | 139 (18 of 81) | ||||||||||||
| Partiality | 34 minutes, 42 seconds | ||||||||||||
| Penumbral | 288 minutes, 53 seconds | ||||||||||||
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A partial lunar eclipse occurred at the Moon’s descending node of orbit on Tuesday, June 3, 1947,[1] with an umbral magnitude of 0.0202. A lunar eclipse occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. A partial lunar eclipse occurs when one part of the Moon is in the Earth's umbra, while the other part is in 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 3.2 days before apogee (on June 6, 1947, at 23:00 UTC), the Moon's apparent diameter was smaller.[2]
Visibility
[edit]The eclipse was completely visible over east and southern Africa, west, central, and south Asia, western Australia, and Antarctica, seen rising over Europe, west Africa, and eastern South America and setting over east Asia and eastern Australia.[3]
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Eclipse details
[edit]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 | 1.08185 |
| Umbral Magnitude | 0.02016 |
| Gamma | −0.98496 |
| Sun Right Ascension | 04h43m31.4s |
| Sun Declination | +22°17'00.3" |
| Sun Semi-Diameter | 15'46.0" |
| Sun Equatorial Horizontal Parallax | 08.7" |
| Moon Right Ascension | 16h42m38.4s |
| Moon Declination | -23°09'16.1" |
| Moon Semi-Diameter | 14'51.0" |
| Moon Equatorial Horizontal Parallax | 0°54'30.0" |
| ΔT | 28.0 s |
Eclipse season
[edit]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.
| May 20 Ascending node (new moon) |
June 3 Descending node (full moon) |
|---|---|
 |
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| Total solar eclipse Solar Saros 127 |
Partial lunar eclipse Lunar Saros 139 |
Related eclipses
[edit]Eclipses in 1947
[edit]- A total solar eclipse on May 20.
- A partial lunar eclipse on June 3.
- An annular solar eclipse on November 12.
- A penumbral lunar eclipse on November 28.
Metonic
[edit]- Preceded by: Lunar eclipse of August 15, 1943
- Followed by: Lunar eclipse of March 23, 1951
Tzolkinex
[edit]- Preceded by: Lunar eclipse of April 22, 1940
- Followed by: Lunar eclipse of July 16, 1954
Half-Saros
[edit]- Preceded by: Solar eclipse of May 29, 1938
- Followed by: Solar eclipse of June 8, 1956
Tritos
[edit]- Preceded by: Lunar eclipse of July 4, 1936
- Followed by: Lunar eclipse of May 3, 1958
Lunar Saros 139
[edit]- Preceded by: Lunar eclipse of May 23, 1929
- Followed by: Lunar eclipse of June 14, 1965
Inex
[edit]- Preceded by: Lunar eclipse of June 24, 1918
- Followed by: Lunar eclipse of May 13, 1976
Triad
[edit]- Preceded by: Lunar eclipse of August 1, 1860
- Followed by: Lunar eclipse of April 3, 2034
Lunar eclipses of 1944–1947
[edit]| Descending node | Ascending node | |||||
|---|---|---|---|---|---|---|
| Saros | Date viewing |
Type chart |
Saros | Date viewing |
Type chart | |
| 109 | 1944 Jul 06
|
Penumbral
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114 | 1944 Dec 29
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Penumbral
| |
| 119 | 1945 Jun 25
|
Partial
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124 | 1945 Dec 19
|
Total
| |
| 129 | 1946 Jun 14
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Total
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134 | 1946 Dec 08
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Total
| |
| 139 | 1947 Jun 03
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Partial
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144 | 1947 Nov 28
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Penumbral
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Saros 139
[edit]Lunar Saros series 139, repeating every 18 years and 11 days, has a total of 79 lunar eclipse events including 42 umbral lunar eclipses (15 partial lunar eclipses and 27 total lunar eclipses)..
| Greatest | First | |||
|---|---|---|---|---|
The greatest eclipse of the series will occur on 2199 Nov 02, lasting 102 minutes.[5] |
Penumbral | Partial | Total | Central |
| 1658 Dec 09 | 1947 Jun 03 | 2073 Aug 17 | 2109 Sep 09 | |
| Last | ||||
| Central | Total | Partial | Penumbral | |
| 2488 Apr 26 | 2542 May 30 | 2686 Aug 25 | 3065 Apr 13 | |
| 1911 May 13 | 1929 May 23 | 1947 Jun 03 | |||
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| 1965 Jun 14 | 1983 Jun 25 | 2001 Jul 05 | |||
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| 2019 Jul 16 | 2037 Jul 27 | 2055 Aug 07 | |||
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| 2073 Aug 17 | 2091 Aug 29 | ||||
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).[6] This lunar eclipse is related to two total solar eclipses of Solar Saros 146.
| May 29, 1938 | June 8, 1956 |
|---|---|
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See also
[edit]Notes
[edit]- ^ "June 3–4, 1947 Partial Lunar Eclipse". timeanddate. Retrieved 20 December 2024.
- ^ "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 20 December 2024.
- ^ "Partial Lunar Eclipse of 1947 Jun 03" (PDF). NASA. Retrieved 20 December 2024.
- ^ "Partial Lunar Eclipse of 1947 Jun 03". EclipseWise.com. Retrieved 20 December 2024.
- ^ Listing of Eclipses of cycle 139
- ^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros
External links
[edit]- 1947 Jun 03 chart Eclipse Predictions by Fred Espenak, NASA/GSFC
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