An annular solar eclipse occurred at the Moon's descending node of orbit on Sunday, October 22, 1911, with a magnitude of 0.965. 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. Occurring about 5.75 days before apogee (on October 27, 1911, at 22:30 UTC), the Moon's apparent diameter was smaller.

Annularity was visible from the Russian Empire (the parts now belonging to Kazakhstan, Uzbekistan and Kyrgyzstan), China, French Indochina (the part now belonging to Vietnam), Philippines, Dutch East Indies (today's Indonesia), Territory of Papua (now belonging to Papua New Guinea) including the capital city Port Moresby, and the British Solomon Islands and Ellice Islands, including the capitals of Honiara and Tulagi. A partial eclipse was visible for parts of South Asia, Southeast Asia, East Asia, Australia, and Oceania.

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.

+October 22, 1911 Solar Eclipse Times Event Time (UTC) First Penumbral External Contact 1911 October 22 at 01:19:29.5 UTC First Umbral External Contact 1911 October 22 at 02:23:49.9 UTC First Central Line 1911 October 22 at 02:25:31.6 UTC First Umbral Internal Contact 1911 October 22 at 02:27:13.6 UTC First Penumbral Internal Contact 1911 October 22 at 03:39:33.3 UTC Equatorial Conjunction 1911 October 22 at 03:54:33.7 UTC Ecliptic Conjunction 1911 October 22 at 04:09:22.2 UTC Greatest Eclipse 1911 October 22 at 04:13:02.1 UTC Last Penumbral Internal Contact 1911 October 22 at 04:46:55.9 UTC Greatest Duration 1911 October 22 at 04:53:44.9 UTC Last Umbral Internal Contact 1911 October 22 at 05:59:00.0 UTC Last Central Line 1911 October 22 at 06:00:44.7 UTC Last Umbral External Contact 1911 October 22 at 06:02:29.3 UTC Last Penumbral External Contact 1911 October 22 at 07:06:48.6 UTC

+October 22, 1911 Solar Eclipse Parameters Parameter Value Eclipse Magnitude 0.96497 Eclipse Obscuration 0.93116 Gamma 0.32241 Sun Right Ascension 13h42m39.4s Sun Declination -10°38'28.3" Sun Semi-Diameter 16'04.4" Sun Equatorial Horizontal Parallax 08.8" Moon Right Ascension 13h43m12.3s Moon Declination -10°22'21.8" Moon Semi-Diameter 15'16.9" Moon Equatorial Horizontal Parallax 0°56'05.1" ΔT 13.0 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 October–November 1911 October 22Descending node (new moon) November 6Ascending node (full moon) Total solar eclipseSolar Saros 132 Penumbral lunar eclipseLunar Saros 144

Related eclipses Eclipses in 1911 A total solar eclipse on April 28. A penumbral lunar eclipse on May 13. An annular solar eclipse on October 22. A penumbral lunar eclipse on November 6.

Metonic Preceded by: Solar eclipse of January 3, 1908 Followed by: Solar eclipse of August 10, 1915

Tzolkinex Preceded by: Solar eclipse of September 9, 1904 Followed by: Solar eclipse of December 3, 1918

Half-Saros Preceded by: Lunar eclipse of October 17, 1902 Followed by: Lunar eclipse of October 27, 1920

Tritos Preceded by: Solar eclipse of November 22, 1900 Followed by: Solar eclipse of September 21, 1922

Solar Saros 132 Preceded by: Solar eclipse of October 9, 1893 Followed by: Solar eclipse of November 1, 1929

Inex Preceded by: Solar eclipse of November 10, 1882 Followed by: Solar eclipse of October 1, 1940

Triad Preceded by: Solar eclipse of December 20, 1824 Followed by: Solar eclipse of August 22, 1998

Solar eclipses of 1910–1913

Saros 132

Metonic series

Tritos series

Inex series

Notes

References