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August 2055 lunar eclipse 
Summary
A partial lunar eclipse will take place on August 7, 2055. It will last 3 hours, 23 minutes, and 23 seconds.[1] It will be the last of the first set of partial eclipses in Lunar Saros 139.
| Partial eclipse | |
 The Moon passes west to east (right to left) across the Earth's umbral shadow, shown in hourly intervals. | |
| Date | August 7, 2055 |
|---|---|
| Gamma | −0.4769 |
| Magnitude | 0.9594 |
| Saros cycle | 139 (22 of 79) |
This eclipse is the fourth and final eclipse of an almost tetrad, the others being 22 Feb 2054 (T), 18 Aug 2054 (T) and 11 Feb 2055 (T).
Visibility edit
Related eclipses edit
Saros cycle 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.[2] |
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 | |||||||||
Lunar year series edit
| Ascending node | Descending node | |||||
|---|---|---|---|---|---|---|
| Saros | Date Viewing |
Type Chart |
Saros | Date Viewing |
Type Chart | |
| 114 | 2053 Mar 04
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Penumbral
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119 | 2053 Aug 29 |
Penumbral
| |
| 124 | 2054 Feb 22
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Total
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129 | 2054 Aug 18
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Total
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| 134 | 2055 Feb 11
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Total
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139 | 2055 Aug 07
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Partial
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| 144 | 2056 Feb 01
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Penumbral
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149 | 2056 Jul 26
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Partial
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| Last set | 2052 Apr 14 | Last set | 2052 Oct 08 | |||
| Next set | 2056 Dec 22 | Next set | 2056 Jun 27 | |||
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 total solar eclipses of Solar Saros 139.
| August 2, 2046 | August 12, 2064 |
|---|---|
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References edit
- ^ "Catalog of Lunar Eclipses: 2001 to 2100". NASA Goddard Space Flight Center. Archived from the original on 2009-03-22. Retrieved 20 May 2021.
- ^ Listing of Eclipses of cycle 139
- ^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros