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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]
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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 |
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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 |
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Eclipses in 2034
- A total solar eclipse on March 20.
- A penumbral lunar eclipse on April 3.
- An annular solar eclipse on September 12.
- A partial lunar eclipse on September 28.
Metonic
- Preceded by: Lunar eclipse of December 9, 2030
- Followed by: Lunar eclipse of July 16, 2038
Tzolkinex
- Preceded by: Lunar eclipse of August 17, 2027
- Followed by: Lunar eclipse of November 8, 2041
Half-Saros
- Preceded by: Solar eclipse of September 21, 2025
- Followed by: Solar eclipse of October 3, 2043
Tritos
- Preceded by: Lunar eclipse of October 28, 2023
- Followed by: Lunar eclipse of August 27, 2045
Lunar Saros 142
- Preceded by: Lunar eclipse of September 16, 2016
- Followed by: Lunar eclipse of October 8, 2052
Inex
- Preceded by: Lunar eclipse of October 17, 2005
- Followed by: Lunar eclipse of September 7, 2063
Triad
- Preceded by: Lunar eclipse of November 28, 1947
- Followed by: Lunar eclipse of July 30, 2121
Lunar eclipses of 2031–2034
| Ascending node | Descending node | |||||
|---|---|---|---|---|---|---|
| Saros | Date Viewing |
Type Chart |
Saros | Date Viewing |
Type Chart | |
| 112 | 2031 May 07 |
Penumbral |
117 | 2031 Oct 30 |
Penumbral | |
| 122 | 2032 Apr 25 |
Total |
127 | 2032 Oct 18 |
Total | |
| 132 | 2033 Apr 14 |
Total |
137 | 2033 Oct 08 |
Total | |
| 142 | 2034 Apr 03 |
Penumbral |
147 | 2034 Sep 28 |
Partial | |
| Last set | 2031 Jun 05 | Last set | 2030 Dec 09 | |||
| Next set | 2035 Feb 22 | Next set | 2035 Aug 19 | |||
Half-Saros cycle
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 154.
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