# Solar eclipse of June 10, 2021

An annular solar eclipse occurred at the Moon’s ascending node of orbit on Thursday, June 10, 2021, with a magnitude of 0.9435. A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby totally or partly obscuring 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. Occurring about 2.3 days after apogee (on June 8, 2021, at 3:30 UTC), the Moon's apparent diameter was smaller.
The annular eclipse was visible from parts of northeastern Canada (particularly Ontario and Nunavut), Greenland, the Arctic Ocean (passing over the North Pole), and the Russian Far East. A partial eclipse was visible for parts of northern North America, Europe, and North Asia.

## Path

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.

## Gallery

* Eclipse over the Statue of Liberty in New York City
* Montpelier, Vermont, 9:33 UTC
* Killingly, Connecticut, 9:35 UTC
* Lewes, Delaware, 9:42 UTC
* Arlington, Virginia, 9:56 UTC
* Logroño, Spain, 10:10 UTC
* Projection from Prague, Czechia, 10:24 UTC
* Haut-Doubs [fr], France, 10:26 UTC
* Projection through leaves in Woerden, Netherlands, 10:30 UTC
* Brastad, Sweden, 10:32 UTC
* Lino Lakes, Minnesota, 10:33 UTC
* Berlin, Germany, 10:38 UTC
* Beccles, England, 10:48 UTC
* Huittinen, Finland, 11:00 UTC
* Sumburgh, Shetland, 11:04 UTC
* Saint Petersburg, Russia, 11:09 UTC
* Partial from Tõrva, Estonia
* Petrozavodsk, Russia, 11:27 UTC, Coronado telescope
* Timelapse-video from Akademgorodok, Novosibirsk, Russia
* Timelapse-video from Kharbalakh, Yakutia, Russia

## Eclipse details

Shown below are two tables displaying details about this particular solar eclipse. The first table outlines times at which the moon's penumbra or umbra attains the specific parameter, and the second table describes various other parameters pertaining to this eclipse.
June 10, 2021 Solar Eclipse Times :
| Event | Time (UTC) |
| First Penumbral External Contact | 2021 June 10 at 08:13:30.6 UTC |
| First Umbral External Contact | 2021 June 10 at 09:50:58.1 UTC |
| First Central Line | 2021 June 10 at 09:56:08.7 UTC |
| First Umbral Internal Contact | 2021 June 10 at 10:01:51.4 UTC |
| Greatest Eclipse | 2021 June 10 at 10:43:06.7 UTC |
| Greatest Duration | 2021 June 10 at 10:43:07.8 UTC |
| Ecliptic Conjunction | 2021 June 10 at 10:53:48.1 UTC |
| Equatorial Conjunction | 2021 June 10 at 11:02:14.3 UTC |
| Last Umbral Internal Contact | 2021 June 10 at 11:24:10.3 UTC |
| Last Central Line | 2021 June 10 at 11:29:51.9 UTC |
| Last Umbral External Contact | 2021 June 10 at 11:35:01.3 UTC |
| Last Penumbral External Contact | 2021 June 10 at 13:12:31.9 UTC |
June 10, 2021 Solar Eclipse Parameters :
| Parameter | Value |
| Eclipse Magnitude | 0.94350 |
| Eclipse Obscuration | 0.89019 |
| Gamma | 0.91516 |
| Sun Right Ascension | 05h15m31.4s |
| Sun Declination | +23°02'37.1" |
| Sun Semi-Diameter | 15'45.2" |
| Sun Equatorial Horizontal Parallax | 08.7" |
| Moon Right Ascension | 05h14m53.6s |
| Moon Declination | +23°51'21.6" |
| Moon Semi-Diameter | 14'46.8" |
| Moon Equatorial Horizontal Parallax | 0°54'14.5" |
| ΔT | 70.4 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.
Eclipse season of May–June 2021 :
| May 26 Descending node (full moon) | June 10 Ascending node (new moon) |
| Total lunar eclipse Lunar Saros 121 | Annular solar eclipse Solar Saros 147 |

## Related eclipses
### Eclipses in 2021

* A total lunar eclipse on May 26.
* An annular solar eclipse on June 10.
* A partial lunar eclipse on November 19.
* A total solar eclipse on December 4.

### Metonic

* Preceded by: Solar eclipse of August 21, 2017
* Followed by: Solar eclipse of March 29, 2025

### Tzolkinex

* Preceded by: Solar eclipse of April 29, 2014
* Followed by: Solar eclipse of July 22, 2028

### Half-Saros

* Preceded by: Lunar eclipse of June 4, 2012
* Followed by: Lunar eclipse of June 15, 2030

### Tritos

* Preceded by: Solar eclipse of July 11, 2010
* Followed by: Solar eclipse of May 9, 2032

### Solar Saros 147

* Preceded by: Solar eclipse of May 31, 2003
* Followed by: Solar eclipse of June 21, 2039

### Inex

* Preceded by: Solar eclipse of June 30, 1992
* Followed by: Solar eclipse of May 20, 2050

### Triad

* Preceded by: Solar eclipse of August 10, 1934
* Followed by: Solar eclipse of April 11, 2108

### 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.
The partial solar eclipses on February 15, 2018 and August 11, 2018 occur in the previous lunar year eclipse set.
Solar eclipse series sets from 2018 to 2021 :
| Ascending node | Ascending node | Ascending node | Descending node | Descending node | Descending node |
| Saros | Map | Gamma | Saros | Map | Gamma |
| 117 Partial in Melbourne, Australia | July 13, 2018 Partial | −1.35423 | 122 Partial in Nakhodka, Russia | January 6, 2019 Partial | 1.14174 |
| 127 Totality in La Serena, Chile | July 2, 2019 Total | −0.64656 | 132 Annularity in Jaffna, Sri Lanka | December 26, 2019 Annular | 0.41351 |
| 137 Annularity in Beigang, Yunlin, Taiwan | June 21, 2020 Annular | 0.12090 | 142 Totality in Gorbea, Chile | December 14, 2020 Total | −0.29394 |
| 147 Partial in Halifax, Canada | June 10, 2021 Annular | 0.91516 | 152 From HMS Protector off South Georgia | December 4, 2021 Total | −0.95261 |

### Saros 147

This eclipse is a part of Saros series 147, repeating every 18 years, 11 days, and containing 80 events. The series started with a partial solar eclipse on October 12, 1624. It contains annular eclipses from May 31, 2003 through July 31, 2706. There are no hybrid or total eclipses in this set. The series ends at member 80 as a partial eclipse on February 24, 3049. Its 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.
The longest duration of annularity will be produced by member 38 at 9 minutes, 41 seconds on November 21, 2291. All eclipses in this series occur at the Moon’s ascending node of orbit.
Series members 11–32 occur between 1801 and 2200: :
| 11 | 12 | 13 |
| January 30, 1805 | February 11, 1823 | February 21, 1841 |
| 14 | 15 | 16 |
| March 4, 1859 | March 15, 1877 | March 26, 1895 |
| 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 | 28 |
| July 13, 2075 | July 23, 2093 | August 4, 2111 |
| 29 | 30 | 31 |
| August 15, 2129 | August 26, 2147 | September 5, 2165 |
| 32 |
| September 16, 2183 |

### 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.
20 eclipse events between June 10, 1964 and August 21, 2036 :
| June 10–11 | March 28–29 | January 14–16 | 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 |

### Tritos series

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 :
| February 21, 1803 (Saros 127) | January 21, 1814 (Saros 128) | December 20, 1824 (Saros 129) | November 20, 1835 (Saros 130) | October 20, 1846 (Saros 131) |
| September 18, 1857 (Saros 132) | August 18, 1868 (Saros 133) | July 19, 1879 (Saros 134) | June 17, 1890 (Saros 135) | May 18, 1901 (Saros 136) |
| April 17, 1912 (Saros 137) | March 17, 1923 (Saros 138) | February 14, 1934 (Saros 139) | January 14, 1945 (Saros 140) | December 14, 1955 (Saros 141) |
| November 12, 1966 (Saros 142) | October 12, 1977 (Saros 143) | September 11, 1988 (Saros 144) | August 11, 1999 (Saros 145) | July 11, 2010 (Saros 146) |
| June 10, 2021 (Saros 147) | May 9, 2032 (Saros 148) | April 9, 2043 (Saros 149) | March 9, 2054 (Saros 150) | February 5, 2065 (Saros 151) |
| January 6, 2076 (Saros 152) | December 6, 2086 (Saros 153) | November 4, 2097 (Saros 154) | October 5, 2108 (Saros 155) | September 5, 2119 (Saros 156) |
| August 4, 2130 (Saros 157) | July 3, 2141 (Saros 158) | June 3, 2152 (Saros 159) | | April 1, 2174 (Saros 161) |

### 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.
Series members between 1801 and 2200 :
| October 29, 1818 (Saros 140) | October 9, 1847 (Saros 141) | September 17, 1876 (Saros 142) |
| August 30, 1905 (Saros 143) | August 10, 1934 (Saros 144) | July 20, 1963 (Saros 145) |
| June 30, 1992 (Saros 146) | June 10, 2021 (Saros 147) | May 20, 2050 (Saros 148) |
| May 1, 2079 (Saros 149) | April 11, 2108 (Saros 150) | March 21, 2137 (Saros 151) |
| March 2, 2166 (Saros 152) | February 10, 2195 (Saros 153) | |