Solar eclipse of June 21, 2020

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Solar eclipse of June 21, 2020
SE2020Jun21A.png
Map
Type of eclipse
NatureAnnular
Gamma0.1209
Magnitude0.994
Maximum eclipse
Duration38 sec (0 m 38 s)
Coordinates30°30′N 79°42′E / 30.5°N 79.7°E / 30.5; 79.7
Max. width of band21 km (13 mi)
Times (UTC)
Greatest eclipse6:41:15
References
Saros137 (36 of 70)
Catalog # (SE5000)9553

An annular solar eclipse will occur on June 21, 2020. A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby totally or partly obscuring the image of the Sun for a viewer on Earth. An annular solar eclipse occurs when the Moon's apparent diameter is smaller than the Sun's, blocking most of the Sun's light and causing the Sun to look like an annulus (ring). An annular eclipse appears as a partial eclipse over a region of the Earth thousands of kilometres wide.

Images[edit]

SE2020Jun21A.gif
Animated path

Related eclipses[edit]

Solar eclipses of 2018-2021[edit]

This eclipse is a member of a semester series. An eclipse in a semester series of solar eclipses repeats approximately every 177 days and 4 hours (a semester) at alternating nodes of the Moon's orbit.[1]

Note: Partial solar eclipses on February 15, 2018, and August 11, 2018, occur during the previous semester series.

Saros 137[edit]

It is a part of Saros cycle 137, repeating every 18 years, 11 days, containing 70 events. The series started with partial solar eclipse on May 25, 1389. It contains total eclipses from August 20, 1533 through December 6, 1695, first set of hybrid eclipses from December 17, 1713 through February 11, 1804, first set of annular eclipses from February 21, 1822 through March 25, 1876, second set of hybrid eclipses from April 6, 1894 through April 28, 1930, and second set of annular eclipses from May 9, 1948 through April 13, 2507. The series ends at member 70 as a partial eclipse on June 28, 2633. The longest duration of totality was 2 minutes, 55 seconds on September 10, 1569. Solar Saros 137 has 55 umbral eclipses from August 20, 1533 through April 13, 2507 (973.62 years). That's almost 1 millennium!


Inex series[edit]

This eclipse is a part of the long period inex cycle, repeating at alternating nodes, every 358 synodic months (≈ 10,571.95 days, or 29 years minus 20 days). Their appearance and longitude are irregular due to a lack of synchronization with the anomalistic month (period of perigee). However, groupings of 3 inex cycles (≈ 87 years minus 2 months) comes close (≈ 1,151.02 anomalistic months), so eclipses are similar in these groupings. In the 19th century:

• Solar Saros 130: Total Solar Eclipse of 1817 Nov 09

• Solar Saros 131: Annular Solar Eclipse of 1846 Oct 20

• Solar Saros 132: Annular Solar Eclipse of 1875 Sep 29

In the 22nd century:

Solar Saros 140: Annular Solar Eclipse of 2107 Apr 23

Solar Saros 141: Annular Solar Eclipse of 2136 Apr 01

Solar Saros 142: Total Solar Eclipse of 2165 Mar 12

Solar Saros 143: Annular Solar Eclipse of 2194 Feb 21

Metonic series[edit]

The metonic series repeats eclipses every 19 years (6939.69 days), lasting about 5 cycles. Eclipses occur in nearly the same calendar date. In addition, the octon subseries repeats 1/5 of that or every 3.8 years (1387.94 days).

Notes[edit]

  1. ^ 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.

References[edit]