May 2087 lunar eclipse
| Total eclipse | |||||||||||||||||
 The Moon's hourly motion shown right to left | |||||||||||||||||
| Date | May 17, 2087 | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gamma | 0.1999 | ||||||||||||||||
| Magnitude | 1.4568 | ||||||||||||||||
| Saros cycle | 132 (34 of 71) | ||||||||||||||||
| Totality | 95 minutes, 6 seconds | ||||||||||||||||
| Partiality | 230 minutes, 39 seconds | ||||||||||||||||
| Penumbral | 370 minutes, 57 seconds | ||||||||||||||||
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A total lunar eclipse will occur at the Moon’s ascending node of orbit on Saturday, May 17, 2087,[1] with an umbral magnitude of 1.4568. It will be a central lunar eclipse, in which part of the Moon will pass through the center of the Earth's shadow. A lunar eclipse occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. A total lunar eclipse occurs when the Moon's near side entirely passes into the Earth's umbral shadow. 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. A total lunar eclipse can last up to nearly two hours, while a total solar eclipse lasts only a few minutes at any given place, because the Moon's shadow is smaller. Occurring about 2 days after apogee (on May 15, 2087, at 15:25 UTC), the Moon's apparent diameter will be smaller.[2]
Visibility
[edit]The eclipse will be completely visible over east and southeast Asia, Australia, and Antarctica, seen rising over much of Africa, central and eastern Europe, and west, central, and south Asia and setting over the central and eastern Pacific Ocean.[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 | 2.52894 |
| Umbral Magnitude | 1.45675 |
| Gamma | 0.19987 |
| Sun Right Ascension | 03h38m52.3s |
| Sun Declination | +19°28'43.2" |
| Sun Semi-Diameter | 15'49.1" |
| Sun Equatorial Horizontal Parallax | 08.7" |
| Moon Right Ascension | 15h38m58.3s |
| Moon Declination | -19°17'59.5" |
| Moon Semi-Diameter | 14'45.2" |
| Moon Equatorial Horizontal Parallax | 0°54'08.7" |
| ΔT | 114.5 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. The first and last eclipse in this sequence is separated by one synodic month.
| May 2 Descending node (new moon) |
May 17 Ascending node (full moon) |
June 1 Descending node (new moon) |
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| Partial solar eclipse Solar Saros 120 |
Total lunar eclipse Lunar Saros 132 |
Partial solar eclipse Solar Saros 158 |
Related eclipses
[edit]Eclipses in 2087
[edit]- A partial solar eclipse on May 2.
- A total lunar eclipse on May 17.
- A partial solar eclipse on June 1.
- A partial solar eclipse on October 26.
- A total lunar eclipse on November 10.
Metonic
[edit]- Preceded by: Lunar eclipse of July 29, 2083
- Followed by: Lunar eclipse of March 5, 2091
Tzolkinex
[edit]- Preceded by: Lunar eclipse of April 4, 2080
- Followed by: Lunar eclipse of June 28, 2094
Half-Saros
[edit]- Preceded by: Solar eclipse of May 11, 2078
- Followed by: Solar eclipse of May 22, 2096
Tritos
[edit]- Preceded by: Lunar eclipse of June 17, 2076
- Followed by: Lunar eclipse of April 15, 2098
Lunar Saros 132
[edit]- Preceded by: Lunar eclipse of May 6, 2069
- Followed by: Lunar eclipse of May 28, 2105
Inex
[edit]- Preceded by: Lunar eclipse of June 6, 2058
- Followed by: Lunar eclipse of April 27, 2116
Triad
[edit]- Preceded by: Lunar eclipse of July 16, 2000
- Followed by: Lunar eclipse of March 18, 2174
Lunar eclipses of 2085–2088
[edit]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 penumbral lunar eclipses on January 10, 2085 and July 7, 2085 occur in the previous lunar year eclipse set.
| Lunar eclipse series sets from 2085 to 2088 | ||||||||
|---|---|---|---|---|---|---|---|---|
| Ascending node | Descending node | |||||||
| Saros | Date Viewing |
Type Chart |
Gamma | Saros | Date Viewing |
Type Chart |
Gamma | |
| 112 | 2085 Jun 08 |
Penumbral |
−1.2745 | 117 | 2085 Dec 01 |
Penumbral |
1.2189 | |
| 122 | 2086 May 28 |
Partial |
−0.5585 | 127 | 2086 Nov 20 |
Partial |
0.4799 | |
| 132 | 2087 May 17
|
Total
|
0.1999 | 137 | 2087 Nov 10 |
Total |
−0.2043 | |
| 142 | 2088 May 05 |
Partial |
0.9387 | 147 | 2088 Oct 30 |
Partial |
−0.9147 | |
Saros 132
[edit]This eclipse is a part of Saros series 132, repeating every 18 years, 11 days, and containing 71 events. The series started with a penumbral lunar eclipse on May 12, 1492. It contains partial eclipses from August 16, 1636 through March 24, 1997; total eclipses from April 4, 2015 through August 2, 2213; and a second set of partial eclipses from August 13, 2231 through November 30, 2411. The series ends at member 71 as a penumbral eclipse on June 26, 2754.
The longest duration of totality will be produced by member 36 at 106 minutes, 6 seconds on June 9, 2123. All eclipses in this series occur at the Moon’s ascending node of orbit.[6]
| Greatest | First | |||
|---|---|---|---|---|
 The greatest eclipse of the series will occur on 2123 Jun 09, lasting 106 minutes, 6 seconds.[7] |
Penumbral | Partial | Total | Central |
1492 May 12
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1636 Aug 16
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2015 Apr 04
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2069 May 06
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| Last | ||||
| Central | Total | Partial | Penumbral | |
2177 Jul 11
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2213 Aug 02
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2411 Nov 30 |
2754 Jun 26
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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 19–40 occur between 1801 and 2200: | |||||
|---|---|---|---|---|---|
| 19 | 20 | 21 | |||
| 1816 Dec 04 | 1834 Dec 16 | 1852 Dec 26 | |||
| 22 | 23 | 24 | |||
| 1871 Jan 06 | 1889 Jan 17 | 1907 Jan 29 | |||
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| 25 | 26 | 27 | |||
| 1925 Feb 08 | 1943 Feb 20 | 1961 Mar 02 | |||
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| 28 | 29 | 30 | |||
| 1979 Mar 13 | 1997 Mar 24 | 2015 Apr 04 | |||
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| 31 | 32 | 33 | |||
| 2033 Apr 14 | 2051 Apr 26 | 2069 May 06 | |||
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| 34 | 35 | 36 | |||
| 2087 May 17 | 2105 May 28 | 2123 Jun 09 | |||
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| 37 | 38 | 39 | |||
| 2141 Jun 19 | 2159 Jun 30 | 2177 Jul 11 | |||
| 40 | |||||
| 2195 Jul 22 | |||||
Tritos series
[edit]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 2200 | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1803 Aug 03 (Saros 106) |
1814 Jul 02 (Saros 107) |
1825 Jun 01 (Saros 108) |
1836 May 01 (Saros 109) |
1847 Mar 31 (Saros 110) | |||||
| 1858 Feb 27 (Saros 111) |
1869 Jan 28 (Saros 112) |
1879 Dec 28 (Saros 113) |
1890 Nov 26 (Saros 114) |
1901 Oct 27 (Saros 115) | |||||
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| 1912 Sep 26 (Saros 116) |
1923 Aug 26 (Saros 117) |
1934 Jul 26 (Saros 118) |
1945 Jun 25 (Saros 119) |
1956 May 24 (Saros 120) | |||||
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| 1967 Apr 24 (Saros 121) |
1978 Mar 24 (Saros 122) |
1989 Feb 20 (Saros 123) |
2000 Jan 21 (Saros 124) |
2010 Dec 21 (Saros 125) | |||||
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| 2021 Nov 19 (Saros 126) |
2032 Oct 18 (Saros 127) |
2043 Sep 19 (Saros 128) |
2054 Aug 18 (Saros 129) |
2065 Jul 17 (Saros 130) | |||||
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| 2076 Jun 17 (Saros 131) |
2087 May 17 (Saros 132) |
2098 Apr 15 (Saros 133) |
2109 Mar 17 (Saros 134) |
2120 Feb 14 (Saros 135) | |||||
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| 2131 Jan 13 (Saros 136) |
2141 Dec 13 (Saros 137) |
2152 Nov 12 (Saros 138) |
2163 Oct 12 (Saros 139) |
2174 Sep 11 (Saros 140) | |||||
| 2185 Aug 11 (Saros 141) |
2196 Jul 10 (Saros 142) | ||||||||
Inex series
[edit]The inex series repeats eclipses 20 days short of 29 years, repeating on average every 10571.95 days. This period is equal to 358 lunations (synodic months) and 388.5 draconic months. Saros series increment by one on successive Inex events and repeat at alternate ascending and descending lunar nodes.
This period is 383.6734 anomalistic months (the period of the Moon's elliptical orbital precession). Despite the average 0.05 time-of-day shift between subsequent events, the variation of the Moon in its elliptical orbit at each event causes the actual eclipse time to vary significantly. It is a part of Lunar Inex series 40.
All events in this series shown (from 1000 to 2500) are central total lunar eclipses.
| Descending node | Ascending node | Descending node | Ascending node | ||||
|---|---|---|---|---|---|---|---|
| Saros | Date | Saros | Date | Saros | Date | Saros | Date |
| 95 | 1016 May 24 | 96 | 1045 May 3 | 97 | 1074 Apr 14 | 98 | 1103 Mar 25 |
| 99 | 1132 Mar 3 | 100 | 1161 Feb 12 | 101 | 1190 Jan 23 | 102 | 1219 Jan 2 |
| 103 | 1247 Dec 13 | 104 | 1276 Nov 23 | 105 | 1305 Nov 2 | 106 | 1334 Oct 13 |
| 107 | 1363 Sep 23 | 108 | 1392 Sep 2 | 109 | 1421 Aug 13 | 110 | 1450 Jul 24 |
| 111 | 1479 Jul 4 | 112 | 1508 Jun 13
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113 | 1537 May 24 | 114 | 1566 May 4 |
| 115 | 1595 Apr 24 | 116 | 1624 Apr 3 | 117 | 1653 Mar 14 | 118 | 1682 Feb 21 |
| 119 | 1711 Feb 3 | 120 | 1740 Jan 13 | 121 | 1768 Dec 23 | 122 | 1797 Dec 4 |
| 123 | 1826 Nov 14 | 124 | 1855 Oct 25 | 125 | 1884 Oct 4 | 126 | 1913 Sep 15
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| 127 | 1942 Aug 26
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128 | 1971 Aug 6
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129 | 2000 Jul 16
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130 | 2029 Jun 26
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| 131 | 2058 Jun 6
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132 | 2087 May 17
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133 | 2116 Apr 27 | 134 | 2145 Apr 7 |
| 135 | 2174 Mar 18 | 136 | 2203 Feb 26 | 137 | 2232 Feb 7 | 138 | 2261 Jan 17 |
| 139 | 2289 Dec 27 | 140 | 2318 Dec 9 | 141 | 2347 Nov 19 | 142 | 2376 Oct 28 |
| 143 | 2405 Oct 8 | 144 | 2434 Sep 18 | 145 | 2463 Aug 29 | 146 | 2492 Aug 8
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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).[8] This lunar eclipse is related to two total solar eclipses of Solar Saros 139.
| May 11, 2078 | May 22, 2096 |
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See also
[edit]Notes
[edit]- ^ "May 17–18, 2087 Total Lunar Eclipse (Blood Moon)". timeanddate. Retrieved 14 December 2024.
- ^ "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 14 December 2024.
- ^ "Total Lunar Eclipse of 2087 May 17" (PDF). NASA. Retrieved 14 December 2024.
- ^ "Total Lunar Eclipse of 2087 May 17". EclipseWise.com. Retrieved 14 December 2024.
- ^ van Gent, R.H. "Solar- and Lunar-Eclipse Predictions from Antiquity to the Present". A Catalogue of Eclipse Cycles. Utrecht University. Retrieved 6 October 2018.
- ^ "NASA - Catalog of Lunar Eclipses of Saros 132". eclipse.gsfc.nasa.gov.
- ^ Listing of Eclipses of series 132
- ^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros
External links
[edit]- 2087 May 17 chart Eclipse Predictions by Fred Espenak, NASA/GSFC
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