May 2170 lunar eclipse
| Total eclipse | |||||||||||||||||
| Date | May 30, 2170 | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gamma | 0.0174 | ||||||||||||||||
| Magnitude | 1.8330 | ||||||||||||||||
| Saros cycle | 133 (35 of 71) | ||||||||||||||||
| Totality | 101 minutes, 41 seconds | ||||||||||||||||
| Partiality | 219 minutes, 22 seconds | ||||||||||||||||
| Penumbral | 335 minutes, 22 seconds | ||||||||||||||||
| |||||||||||||||||
A total lunar eclipse will occur at the Moon’s descending node of orbit on Wednesday, May 30, 2170,[1] with an umbral magnitude of 1.7488. 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 3.6 days after perigee (on May 26, 2170, at 10:15 UTC), the Moon's apparent diameter will be larger.[2]
This will be the greatest lunar eclipse of Lunar Saros 133 as well as the largest and darkest lunar eclipse of the 22nd century.[3]
Visibility
The eclipse will be completely visible over central and eastern South America, western Europe, and much of Africa, seen rising over western South America and much of North America and setting over eastern Europe, the western half of Asia, and western Australia.
Eclipse details
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 | 2.81880 |
| Umbral Magnitude | 1.83301 |
| Gamma | 0.01743 |
| Sun Right Ascension | 04h28m29.8s |
| Sun Declination | +21°45'15.5" |
| Sun Semi-Diameter | 15'47.2" |
| Sun Equatorial Horizontal Parallax | 08.7" |
| Moon Right Ascension | 16h28m30.9s |
| Moon Declination | -21°44'16.0" |
| Moon Semi-Diameter | 16'00.8" |
| Moon Equatorial Horizontal Parallax | 0°58'46.3" |
| ΔT | 219.6 s |
Eclipse season
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 16 Ascending node (new moon) |
May 30 Descending node (full moon) |
June 14 Ascending node (new moon) |
|---|---|---|
 |
| |
| Partial solar eclipse Solar Saros 121 |
Total lunar eclipse Lunar Saros 133 |
Partial solar eclipse Solar Saros 159 |
Related eclipses
Eclipses in 2170
- A partial solar eclipse on May 16.
- A total lunar eclipse on May 30.
- A partial solar eclipse on June 14.
- A partial solar eclipse on November 8.
- A total lunar eclipse on November 23.
- A partial solar eclipse on December 7.
Metonic
- Preceded by: Lunar eclipse of August 11, 2166
- Followed by: Lunar eclipse of March 18, 2174
Tzolkinex
- Preceded by: Lunar eclipse of April 19, 2163
- Followed by: Lunar eclipse of July 11, 2177
Half-Saros
- Preceded by: Solar eclipse of May 25, 2161
- Followed by: Solar eclipse of June 5, 2179
Tritos
- Preceded by: Lunar eclipse of June 30, 2159
- Followed by: Lunar eclipse of April 29, 2181
Lunar Saros 133
- Preceded by: Lunar eclipse of May 18, 2152
- Followed by: Lunar eclipse of June 9, 2188
Inex
- Preceded by: Lunar eclipse of June 19, 2141
- Followed by: Lunar eclipse of May 10, 2199
Triad
- Preceded by: Lunar eclipse of July 29, 2083
- Followed by: Lunar eclipse of March 30, 2257
Lunar eclipses of 2168–2172
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 lunar eclipses on January 24, 2168 (partial), July 20, 2168 (penumbral), and January 13, 2169 (penumbral) occur in the previous lunar year eclipse set, and the penumbral lunar eclipses on April 9, 2172 and October 2, 2172 occur in the next lunar year eclipse set.
| Lunar eclipse series sets from 2168 to 2172 | ||||||||
|---|---|---|---|---|---|---|---|---|
| Ascending node | Descending node | |||||||
| Saros | Date Viewing |
Type Chart |
Gamma | Saros | Date Viewing |
Type Chart |
Gamma | |
| 118 | 2168 Dec 14 |
Penumbral |
−1.1945 | 123 | 2169 Jun 09 |
Partial |
0.8158 | |
| 128 | 2169 Dec 04 |
Partial |
−0.5488 | 133 | 2170 May 30 |
Total |
0.0174 | |
| 138 | 2170 Nov 23 |
Total |
0.1554 | 143 | 2171 May 19 |
Partial |
−0.7166 | |
| 148 | 2171 Nov 12 |
Partial |
0.8584 | 153 | 2172 May 08 |
Penumbral |
−1.4275 | |
| 158 | 2172 Oct 31 |
Penumbral |
1.5197 | |||||
Saros 133
This eclipse is a part of Saros series 133, repeating every 18 years, 11 days, and containing 71 events. The series started with a penumbral lunar eclipse on May 13, 1557. It contains partial eclipses from August 7, 1683 through December 17, 1899; total eclipses from December 28, 1917 through August 3, 2278; and a second set of partial eclipses from August 14, 2296 through March 11, 2639. The series ends at member 71 as a penumbral eclipse on June 29, 2819.
The longest duration of totality will be produced by member 35 at 101 minutes, 41 seconds on May 30, 2170. All eclipses in this series occur at the Moon’s descending node of orbit.[6]
| Greatest | First | |||
|---|---|---|---|---|
| The greatest eclipse of the series will occur on 2170 May 30, lasting 101 minutes, 41 seconds.[7] | Penumbral | Partial | Total | Central |
| 1557 May 13 |
1683 Aug 07 |
1917 Dec 28
|
2098 Apr 15
| |
| Last | ||||
| Central | Total | Partial | Penumbral | |
| 2224 Jul 01 |
2278 Aug 03 |
2639 Mar 11 |
2819 Jun 29 | |
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 15–36 occur between 1801 and 2200: | |||||
|---|---|---|---|---|---|
| 15 | 16 | 17 | |||
| 1809 Oct 23 | 1827 Nov 03 | 1845 Nov 14 | |||
| 18 | 19 | 20 | |||
| 1863 Nov 25 | 1881 Dec 05 | 1899 Dec 17 | |||
| 21 | 22 | 23 | |||
| 1917 Dec 28 | 1936 Jan 08 | 1954 Jan 19 | |||
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| 24 | 25 | 26 | |||
| 1972 Jan 30 | 1990 Feb 09 | 2008 Feb 21 | |||
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| 27 | 28 | 29 | |||
| 2026 Mar 03 | 2044 Mar 13 | 2062 Mar 25 | |||
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| 30 | 31 | 32 | |||
| 2080 Apr 04 | 2098 Apr 15 | 2116 Apr 27 | |||
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| 33 | 34 | 35 | |||
| 2134 May 08 | 2152 May 18 | 2170 May 30 | |||
| 36 | |||||
| 2188 Jun 09 | |||||
Half-Saros cycle
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 annular solar eclipses of Solar Saros 140.
| May 25, 2161 | June 5, 2179 |
|---|---|
|
|
References
- ^ "May 29–30, 2170 Total Lunar Eclipse (Blood Moon)". timeanddate. Retrieved 15 December 2024.
- ^ "Moon Distances for London, United Kingdom, England". timeanddate. Retrieved 15 December 2024.
- ^ "NASA - Catalog of Lunar Eclipses in Saros 133". eclipse.gsfc.nasa.gov. Retrieved 2021-01-24.
- ^ "Total Lunar Eclipse of 2170 May 30". EclipseWise.com. Retrieved 15 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 133". eclipse.gsfc.nasa.gov.
- ^ Listing of Eclipses of series 133
- ^ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros
