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Astronomical event From Wikipedia, the free encyclopedia
A partial lunar eclipse will occur at the Moon’s descending node of orbit on Thursday, September 28, 2034,[1] with an umbral magnitude of 0.0155. 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 1.9 days before perigee (on September 30, 2034, at 0:15 UTC), the Moon's apparent diameter will be larger.[2]
| Partial eclipse | |||||||||||||
The Moon's hourly motion shown right to left | |||||||||||||
| Date | September 28, 2034 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gamma | −1.0110 | ||||||||||||
| Magnitude | 0.0155 | ||||||||||||
| Saros cycle | 147 (10 of 71) | ||||||||||||
| Partiality | 26 minutes, 42 seconds | ||||||||||||
| Penumbral | 248 minutes, 41 seconds | ||||||||||||
| |||||||||||||
This will the second-shortest partial lunar eclipse in the 21st century, lasting 26 minutes and 42 seconds. On February 13, 2082, a slightly shorter partial eclipse will occur, lasting 25 minutes and 30 seconds.[3]
The eclipse will be completely visible over eastern North America, South America, west Africa, and western Europe, seen rising over western North America and setting over east Africa and eastern Europe.[4]
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Shown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.[5]
| Parameter | Value |
|---|---|
| Penumbral Magnitude | 0.99223 |
| Umbral Magnitude | 0.01554 |
| Gamma | −1.01103 |
| Sun Right Ascension | 12h18m35.8s |
| Sun Declination | -02°00'43.0" |
| Sun Semi-Diameter | 15'57.6" |
| Sun Equatorial Horizontal Parallax | 08.8" |
| Moon Right Ascension | 00h19m50.0s |
| Moon Declination | +01°02'59.4" |
| Moon Semi-Diameter | 16'20.4" |
| Moon Equatorial Horizontal Parallax | 0°59'58.2" |
| ΔT | 76.3 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.
| September 12 Ascending node (new moon) | September 28 Descending node (full moon) |
|---|---|
 | |
| Annular solar eclipse Solar Saros 135 | Partial 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.[6]
The penumbral lunar eclipse on June 5, 2031 occurs in the previous lunar year eclipse set.
| Lunar eclipse series sets from 2031 to 2034 | ||||||||
|---|---|---|---|---|---|---|---|---|
| Ascending node | Descending node | |||||||
| Saros | Date Viewing |
Type Chart |
Gamma | Saros | Date Viewing |
Type Chart |
Gamma | |
| 112 | 2031 May 07 |
Penumbral |
−1.0694 | 117 | 2031 Oct 30 |
Penumbral |
1.1774 | |
| 122 | 2032 Apr 25 |
Total |
−0.3558 | 127 | 2032 Oct 18 |
Total |
0.4169 | |
| 132 | 2033 Apr 14 |
Total |
0.3954 | 137 | 2033 Oct 08 |
Total |
−0.2889 | |
| 142 | 2034 Apr 03 |
Penumbral |
1.1144 | 147 | 2034 Sep 28 |
Partial |
−1.0110 | |
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.[7]
| Greatest | First | |||
|---|---|---|---|---|
| The greatest eclipse of the series will occur on 2539 Aug 01, lasting 105 minutes, 18 seconds.[8] | 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 | |||
This eclipse is a part of a tritos cycle, repeating at alternating nodes every 135 synodic months (≈ 3986.63 days, or 11 years minus 1 month). Their appearance and longitude are irregular due to a lack of synchronization with the anomalistic month (period of perigee), but groupings of 3 tritos cycles (≈ 33 years minus 3 months) come close (≈ 434.044 anomalistic months), so eclipses are similar in these groupings.
| Series members between 1801 and 2132 | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1805 Jul 11 (Saros 126) |
1816 Jun 10 (Saros 127) |
1827 May 11 (Saros 128) |
1838 Apr 10 (Saros 129) |
1849 Mar 09 (Saros 130) | |||||
| 1860 Feb 07 (Saros 131) |
1871 Jan 06 (Saros 132) |
1881 Dec 05 (Saros 133) |
1892 Nov 04 (Saros 134) |
1903 Oct 06 (Saros 135) | |||||
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 | ||||||||
| 1914 Sep 04 (Saros 136) |
1925 Aug 04 (Saros 137) |
1936 Jul 04 (Saros 138) |
1947 Jun 03 (Saros 139) |
1958 May 03 (Saros 140) | |||||
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| 1969 Apr 02 (Saros 141) |
1980 Mar 01 (Saros 142) |
1991 Jan 30 (Saros 143) |
2001 Dec 30 (Saros 144) |
2012 Nov 28 (Saros 145) | |||||
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| 2023 Oct 28 (Saros 146) |
2034 Sep 28 (Saros 147) |
2045 Aug 27 (Saros 148) |
2056 Jul 26 (Saros 149) |
2067 Jun 27 (Saros 150) | |||||
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| 2132 Dec 22 (Saros 156) | |||||||||
A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros).[9] This lunar eclipse is related to two total solar eclipses of Solar Saros 154.
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