April 1903 lunar eclipse
A partial lunar eclipse occurred at the Moon’s ascending node of orbit on Sunday, April 12, 1903, with an umbral magnitude of 0.9677. A lunar eclipse occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. A partial lunar eclipse occurs when one part of the Moon is in the Earth's umbra, while the other part is in the Earth's penumbra. Unlike a solar eclipse, which can only be viewed from a relatively small area of the world, a lunar eclipse may be viewed from anywhere on the night side of Earth. The Moon's apparent diameter was near the average diameter because it occurred 6.2 days after perigee and 7.1 days before apogee.
This nearly total lunar eclipse of Lunar Saros 130 preceded the first total eclipse of the series on April 22, 1921.
It occurred on Easter Sunday, for the first time since 1846.
Visibility
The eclipse was completely visible over eastern South America, Africa, Europe, and Antarctica, seen rising over western South America and much of North America and setting over much of Asia and western Australia.Eclipse details
Shown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.| Parameter | Value |
| Penumbral Magnitude | 1.98771 |
| Umbral Magnitude | 0.96765 |
| Gamma | 0.47981 |
| Sun Right Ascension | 01h17m19.0s |
| Sun Declination | +08°10'13.1" |
| Sun Semi-Diameter | 15'57.3" |
| Sun Equatorial Horizontal Parallax | 08.8" |
| Moon Right Ascension | 13h17m50.3s |
| Moon Declination | -07°43'47.7" |
| Moon Semi-Diameter | 15'38.4" |
| Moon Equatorial Horizontal Parallax | 0°57'24.1" |
| ΔT | 1.6 s |
Eclipse season
This eclipse is part of an eclipse season, a period, roughly every six months, when eclipses occur. Only two eclipse seasons occur each year, and each season lasts about 35 days and repeats just short of six months 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.| March 29 Descending node | April 12 Ascending node |
| Annular solar eclipse Solar Saros 118 | Partial lunar eclipse Lunar Saros 130 |
Related eclipses
Eclipses in 1903
- An annular solar eclipse on March 29.A partial lunar eclipse on April 12.
- A total solar eclipse on September 21.
- A partial lunar eclipse on October 6.
Metonic
- Preceded by: Lunar eclipse of June 23, 1899
- Followed by: Lunar eclipse of January 29, 1907
Tzolkinex
- Preceded by: Lunar eclipse of February 28, 1896
- Followed by: Lunar eclipse of May 24, 1910
Half-Saros
- Preceded by: Solar eclipse of April 6, 1894
- Followed by: Solar eclipse of April 17, 1912
Tritos
- Preceded by: Lunar eclipse of May 11, 1892
- Followed by: Lunar eclipse of March 12, 1914
Lunar Saros 130
- Preceded by: Lunar eclipse of March 30, 1885
- Followed by: Lunar eclipse of April 22, 1921
Inex
- Preceded by: Lunar eclipse of May 1, 1874
- Followed by: Lunar eclipse of March 22, 1932
Triad
- Preceded by: Lunar eclipse of June 10, 1816
- Followed by: Lunar eclipse of February 9, 1990
Lunar eclipses of 1901–1904
This eclipse is a member of a semester series. An eclipse in a semester series of lunar eclipses repeats approximately every 177 days and 4 hours at alternating nodes of the Moon's orbit.The penumbral lunar eclipse on March 2, 1904 occurs in the next lunar year eclipse set.
Half-Saros cycle
A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days. This lunar eclipse is related to two hybrid solar eclipses of Solar Saros 137.| April 6, 1894 | April 17, 1912 |