Solar eclipse of June 10, 2021
Partial from Halifax, Canada
Map
Type of eclipse
NatureAnnular
Gamma0.9152
Magnitude0.9435
Maximum eclipse
Duration231 sec (3 m 51 s)
Coordinates80°48′N 66°48′W / 80.8°N 66.8°W / 80.8; -66.8
Max. width of band527 km (327 mi)
Times (UTC)
Greatest eclipse10:43:07
References
Saros147 (23 of 80)
Catalog # (SE5000)9555

An annular solar eclipse occurred on Thursday, June 10, 2021, when the Moon passed between Earth and the Sun, thereby partly obscuring the image of the Sun for a viewer on Earth.[1][2][3] During the eclipse, the Moon's apparent diameter was smaller than the Sun's, so it caused the Sun to look like an annulus. The annular eclipse was visible from parts of northeastern Canada, Greenland, the Arctic Ocean (passing over the North Pole),[4] and the Russian Far East, whilst the eclipse appeared partial from a region thousands of kilometres wide, which included northeastern North America, most of Europe, and northern Asia.[5]

Path

Animated image showing the path of the eclipse shadows.

The annular eclipse started at 09:55 UTC for 3 minutes 37 seconds along the northern shore of Lake Superior in Ontario, Canada. The path of the antumbral shadow then headed across Hudson Bay through northwestern Quebec and the Hudson Strait to Baffin Island in Nunavut, where the town of Iqaluit saw 3 minutes and 5 seconds of annularity. After this, it then travelled across Baffin Bay and along the northwestern coast of Greenland, where the point of greatest eclipse occurred at 10:41 UTC in Nares Strait for 3 minutes 51 seconds. The shadow then crossed Ellesmere Island and the Arctic Ocean, passing over the North Pole (which was located away from the central line of the eclipse but saw 2 minutes and 36 seconds of annularity), before heading south towards northeastern Siberia, where the city of Srednekolymsk saw 3 minutes and 35 seconds of annularity at 11:27 UTC. Shortly afterwards, the central line of the annular eclipse ended at 11:29 UTC.[6][7]

Other eclipses in 2021

Tzolkinex

Half-saros cycle

Tritos

Triad

Solar eclipses of 2018–2021

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.[8]

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

Solar eclipse series sets from 2018–2021
Ascending node   Descending node
Saros Map Gamma Saros Map Gamma
117

Partial from Melbourne, Australia		 2018 July 13

Partial		 −1.35423 122

Partial from Nakhodka, Russia		 2019 January 6

Partial		 1.14174
127

La Serena, Chile		 2019 July 2

Total		 −0.64656 132

Jaffna, Sri Lanka		 2019 December 26

Annular		 0.41351
137

Beigang, Yunlin, Taiwan		 2020 June 21

Annular		 0.12090 142

Gorbea, Chile		 2020 December 14

Total		 −0.29394
147

Partial from Halifax, Canada		 2021 June 10

Annular		 0.91516 152

From HMS Protector off South Georgia		 2021 December 4

Total		 −0.95261

Saros 147

Solar saros 147, repeating every about 18 years and 11 days, contains 80 events. The series started with a partial solar eclipse on October 12, 1624. It has annular eclipses from May 31, 2003, to July 31, 2706. There are no total eclipses in this series. The series ends at member 80 as a partial eclipse on February 24, 3049. The longest annular eclipse will be on November 21, 2291, at 9 minutes and 41 seconds.[9]

Series members 17–27 occur between 1901 and 2100:
17 18 19

April 6, 1913
April 18, 1931
April 28, 1949
20 21 22

May 9, 1967
May 19, 1985
May 31, 2003
23 24 25

June 10, 2021
June 21, 2039
July 1, 2057
26 27

July 13, 2075
July 23, 2093

Inex series

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 140: total solar eclipse of October 29, 1818
  • Solar saros 141: annular solar eclipse of October 9, 1847
  • Solar saros 142: total solar eclipse of September 17, 1876

In the 22nd century:

  • Solar Saros 150: Partial solar eclipse of April 11, 2108
  • Solar Saros 151: Annular solar eclwssipse of March 21, 2137
  • Solar Saros 152: Total solar eclipse of March 2, 2166
  • Solar Saros 153: Annular solar eclipse of February 10, 2195

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Metonic series

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). All eclipses in this table occur at the Moon's ascending node.

21 eclipse events, progressing from south to north between June 10, 1964, and August 21, 2036
June 10–11 March 27–29 January 15–16 November 3 August 21–22
117 119 121 123 125

June 10, 1964
March 28, 1968
January 16, 1972
November 3, 1975
August 22, 1979
127 129 131 133 135

June 11, 1983
March 29, 1987
January 15, 1991
November 3, 1994
August 22, 1998
137 139 141 143 145

June 10, 2002
March 29, 2006
January 15, 2010
November 3, 2013
August 21, 2017
147 149 151 153 155

June 10, 2021
March 29, 2025
January 14, 2029
November 3, 2032
August 21, 2036

References

  1. ↑ "Spectacular Photos of Thursday's Solar Eclipse". The Weather Channel.
  2. ↑ "Highlights From the 'Ring of Fire' Solar Eclipse at Sunrise". June 10, 2021 – via NYTimes.com.
  3. ↑ Guenot, Marianne. "Stunning images show the rare solar eclipse that just partially obscured the sun across the Northern Hemisphere". Business Insider.
  4. ↑ JavaScript Solar Eclipse Explorer - Europe (Latitude: 90° 00' 00" N. Longitude: 0° 00' 00" W). NASA
  5. ↑ "NASA - Annular Solar Eclipse of 2021 June 10". eclipse.gsfc.nasa.gov. Retrieved June 10, 2021.
  6. ↑ "EclipseWise - Eclipses During 2021". www.eclipsewise.com. Retrieved June 10, 2021.
  7. ↑ "Кольцеобразное солнечное затмение 10 июня 2021 года | Календарь наблюдателя | Meteoweb.ru". meteoweb.ru. Retrieved June 10, 2021.
  8. ↑ van Gent, R.H. "Solar- and Lunar-Eclipse Predictions from Antiquity to the Present". A Catalogue of Eclipse Cycles. Utrecht University. Retrieved October 6, 2018.
  9. ↑ Saros Series Catalog of Solar Eclipses NASA Eclipse Web Site.
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