An annular solar eclipse occurred at the Moon's descending node of orbit on Thursday, September 11, 1969, with a magnitude of 0.969. 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 5.2 days after apogee (on September 6, 1969, at 15:50 UTC), the Moon's apparent diameter was smaller.
Annularity was visible from the Pacific Ocean, Peru, Bolivia and the southwestern tip of Brazilian state Mato Grosso. A partial eclipse was visible for parts of North America, Central America, the Caribbean, and western South America. Places west of the International Date Line witnessed the eclipse on Friday, September 12, 1969.
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.
+September 11, 1969 Solar Eclipse Times Event Time (UTC) First Penumbral External Contact 1969 September 11 at 17:02:10.6 UTC First Umbral External Contact 1969 September 11 at 18:05:48.3 UTC First Central Line 1969 September 11 at 18:07:22.6 UTC First Umbral Internal Contact 1969 September 11 at 18:08:57.1 UTC Greatest Duration 1969 September 11 at 18:58:29.1 UTC First Penumbral Internal Contact 1969 September 11 at 19:15:35.4 UTC Equatorial Conjunction 1969 September 11 at 19:45:07.4 UTC Ecliptic Conjunction 1969 September 11 at 19:56:27.0 UTC Greatest Eclipse 1969 September 11 at 19:58:58.7 UTC Last Penumbral Internal Contact 1969 September 11 at 20:42:42.5 UTC Last Umbral Internal Contact 1969 September 11 at 21:49:10.9 UTC Last Central Line 1969 September 11 at 21:50:42.6 UTC Last Umbral External Contact 1969 September 11 at 21:52:14.2 UTC Last Penumbral External Contact 1969 September 11 at 22:55:46.4 UTC
+September 11, 1969 Solar Eclipse Parameters Parameter Value Eclipse Magnitude 0.96904 Eclipse Obscuration 0.93904 Gamma 0.22014 Sun Right Ascension 11h19m09.2s Sun Declination +04°23'48.2" Sun Semi-Diameter 15'53.5" Sun Equatorial Horizontal Parallax 08.7" Moon Right Ascension 11h19m32.8s Moon Declination +04°34'30.9" Moon Semi-Diameter 15'10.1" Moon Equatorial Horizontal Parallax 0°55'40.1" ΔT 39.9 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.
+ Eclipse season of August–September 1969 August 27Ascending node (full moon) September 11Descending node (new moon) September 25Ascending node (full moon) Penumbral lunar eclipseLunar Saros 108 Annular solar eclipseSolar Saros 134 Penumbral lunar eclipseLunar Saros 146
Related eclipses Eclipses in 1969 An annular solar eclipse on March 18. A penumbral lunar eclipse on April 2. A penumbral lunar eclipse on August 27. An annular solar eclipse on September 11. A penumbral lunar eclipse on September 25.
Metonic Preceded by: Solar eclipse of November 23, 1965 Followed by: Solar eclipse of June 30, 1973
Tzolkinex Preceded by: Solar eclipse of July 31, 1962 Followed by: Solar eclipse of October 23, 1976
Half-Saros Preceded by: Lunar eclipse of September 5, 1960 Followed by: Lunar eclipse of September 16, 1978
Tritos Preceded by: Solar eclipse of October 12, 1958 Followed by: Solar eclipse of August 10, 1980
Solar Saros 134 Preceded by: Solar eclipse of September 1, 1951 Followed by: Solar eclipse of September 23, 1987
Inex Preceded by: Solar eclipse of October 1, 1940 Followed by: Solar eclipse of August 22, 1998
Triad Preceded by: Solar eclipse of November 10, 1882 Followed by: Solar eclipse of July 12, 2056
Solar eclipses of 1968–1971
Saros 134
Metonic series
Tritos series
Inex series
Notes
References