An annular solar eclipse occurred at the Moon's ascending node of orbit on Friday, June 28, 1889, with a magnitude of 0.9471. 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 1.1 days after apogee (on June 27, 1889, at 8:20 UTC), the Moon's apparent diameter was smaller.[1]
The path of annularity was visible from parts of modern-day Namibia, Botswana, southeastern Angola, Zambia, Zimbabwe, Malawi, Mozambique, and Tanzania. A partial solar eclipse was also visible for parts of Southern Africa, Central Africa, East Africa, the Middle East, southern India, and western Indonesia.
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.[2]
| First Penumbral External Contact | 1889 June 28 at 06:06:01.1 UTC | |
| First Umbral External Contact | 1889 June 28 at 07:17:54.9 UTC | |
| First Central Line | 1889 June 28 at 07:20:36.4 UTC | |
| First Umbral Internal Contact | 1889 June 28 at 07:23:19.2 UTC | |
| Ecliptic Conjunction | 1889 June 28 at 08:53:32.5 UTC | |
| Equatorial Conjunction | 1889 June 28 at 08:56:51.5 UTC | |
| Greatest Eclipse | 1889 June 28 at 09:00:00.3 UTC | |
| Greatest Duration | 1889 June 28 at 09:01:41.6 UTC | |
| Last Umbral Internal Contact | 1889 June 28 at 10:36:44.1 UTC | |
| Last Central Line | 1889 June 28 at 10:39:26.3 UTC | |
| Last Umbral External Contact | 1889 June 28 at 10:42:07.1 UTC | |
| Last Penumbral External Contact | 1889 June 28 at 11:53:59.6 UTC |
| Eclipse Magnitude | 0.94713 | |
| Eclipse Obscuration | 0.89706 | |
| Gamma | −0.54312 | |
| Sun Right Ascension | 06h29m34.7s | |
| Sun Declination | +23°16'43.2" | |
| Sun Semi-Diameter | 15'43.8" | |
| Sun Equatorial Horizontal Parallax | 08.6" | |
| Moon Right Ascension | 06h29m40.9s | |
| Moon Declination | +22°47'30.4" | |
| Moon Semi-Diameter | 14'42.8" | |
| Moon Equatorial Horizontal Parallax | 0°53'59.8" | |
| ΔT | -6.1 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.
| July 12 Descending node (full moon) | ||
| Annular solar eclipse Solar Saros 125 | Partial lunar eclipse Lunar Saros 137 |
The partial solar eclipses on February 11, 1888 and August 7, 1888 occur in the previous lunar year eclipse set.
| Solar eclipse series sets from 1888 to 1891 | ||||||
|---|---|---|---|---|---|---|
| Ascending node | Descending node | |||||
| Saros | Map | Gamma | Saros | Map | Gamma | |
| 115 | July 9, 1888 Partial | −1.2797 | 120 | January 1, 1889 Total | 0.8603 | |
| 125 | June 28, 1889 Annular | −0.5431 | 130 | December 22, 1889 Total | 0.1888 | |
| 135 | June 17, 1890 Annular | 0.2246 | 140 | December 12, 1890 Hybrid | −0.5016 | |
| 145 | June 6, 1891 Annular | 0.9754 | 150 | December 1, 1891 Partial | −1.2515 | |
