An annular solar eclipse occurred at the Moon's ascending node of orbit on Monday, January 26, 2009,[1] [2] [3] with a magnitude of 0.9282. 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 3.3 days after apogee (on January 23, 2009, at 0:10 UTC), the Moon's apparent diameter was smaller.[4]
The eclipse was visible from a narrow corridor beginning in the south Atlantic Ocean and sweeping eastward 900 km south of Africa, slowly curving northeast through the Indian Ocean. Its first landfall was in the Cocos Islands followed by southern Sumatra and western Java. It continued somewhat more easterly across central Borneo, across the northwestern edge of Celebes, then ending just before Mindanao, Philippines. The duration of annularity at greatest eclipse lasted 7 minutes, 53.58 seconds, but at greatest duration lasted 7 minutes, 56.05 seconds. A partial eclipse was visible for parts of Southern Africa, East Antarctica, Southeast Asia, the Philippines, and Australia.
Animated path
Progression from Colombo, Sri Lanka
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.[5]
| First Penumbral External Contact | 2009 January 26 at 04:57:42.7 UTC | |
| First Umbral External Contact | 2009 January 26 at 06:03:44.5 UTC | |
| First Central Line | 2009 January 26 at 06:06:54.1 UTC | |
| First Umbral Internal Contact | 2009 January 26 at 06:10:04.0 UTC | |
| First Penumbral Internal Contact | 2009 January 26 at 07:22:11.5 UTC | |
| Greatest Duration | 2009 January 26 at 07:43:23.8 UTC | |
| Equatorial Conjunction | 2009 January 26 at 07:47:30.2 UTC | |
| Ecliptic Conjunction | 2009 January 26 at 07:56:23.1 UTC | |
| Greatest Eclipse | 2009 January 26 at 07:59:44.5 UTC | |
| Last Penumbral Internal Contact | 2009 January 26 at 08:37:36.7 UTC | |
| Last Umbral Internal Contact | 2009 January 26 at 09:49:34.5 UTC | |
| Last Central Line | 2009 January 26 at 09:52:42.3 UTC | |
| Last Umbral External Contact | 2009 January 26 at 09:55:49.6 UTC | |
| Last Penumbral External Contact | 2009 January 26 at 11:01:46.9 UTC |
| Eclipse Magnitude | 0.92825 | |
| Eclipse Obscuration | 0.86165 | |
| Gamma | −0.28197 | |
| Sun Right Ascension | 20h35m32.8s | |
| Sun Declination | -18°38'55.0" | |
| Sun Semi-Diameter | 16'14.6" | |
| Sun Equatorial Horizontal Parallax | 08.9" | |
| Moon Right Ascension | 20h35m55.2s | |
| Moon Declination | -18°53'18.2" | |
| Moon Semi-Diameter | 14'51.6" | |
| Moon Equatorial Horizontal Parallax | 0°54'32.2" | |
| ΔT | 65.8 s |
See also: Eclipse cycle. 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.
Photos: