February 1933 lunar eclipse
A penumbral lunar eclipse occurred at the Moon’s descending node of orbit on Friday, February 10, 1933, with an umbral magnitude of −1.0268. A lunar eclipse occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. A penumbral lunar eclipse occurs when part or all of the Moon's near side passes into 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 6.7 days after apogee and 7.9 days before perigee.
This eclipse was the first of four penumbral lunar eclipses in 1933, with the others occurring on March 12, August 5, and September 4.
Visibility
The eclipse was completely visible over much of Asia, Australia, and western North America.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 | 0.01836 |
| Umbral Magnitude | −1.02680 |
| Gamma | 1.56004 |
| Sun Right Ascension | 21h35m02.2s |
| Sun Declination | -14°22'59.8" |
| Sun Semi-Diameter | 16'12.3" |
| Sun Equatorial Horizontal Parallax | 08.9" |
| Moon Right Ascension | 09h37m33.3s |
| Moon Declination | +15°43'55.4" |
| Moon Semi-Diameter | 15'30.3" |
| Moon Equatorial Horizontal Parallax | 0°56'54.2" |
| ΔT | 23.9 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. The first and last eclipse in this sequence is separated by one synodic month.| February 10 Descending node | February 24 Ascending node | March 12 Descending node |
| Penumbral lunar eclipse Lunar Saros 103 | Annular solar eclipse Solar Saros 129 | Penumbral lunar eclipse Lunar Saros 141 |
Related eclipses
Eclipses in 1933
- A penumbral lunar eclipse on February 10.
- An annular solar eclipse on February 24.
- A penumbral lunar eclipse on March 12.
- A penumbral lunar eclipse on August 5.
- An annular solar eclipse on August 21.
- A penumbral lunar eclipse on September 4.
Tzolkinex
- Followed by: Lunar eclipse of March 23, 1940
Tritos
- Preceded by: Lunar eclipse of March 13, 1922
Lunar Saros 103
- Preceded by: Lunar eclipse of January 31, 1915
- Followed by: Lunar eclipse of February 21, 1951
Inex
- Preceded by: Lunar eclipse of March 2, 1904
Triad
- Preceded by: Lunar eclipse of April 11, 1846
Lunar eclipses of 1933–1936
Saros 103
This eclipse is a part of Saros series 103, repeating every 18 years, 11 days, and containing 82 or 83 events. The series started with a penumbral lunar eclipse on September 3, 472 AD. It contains partial eclipses from April 19, 851 AD through June 23, 959 AD; total eclipses from July 3, 977 AD through May 3, 1482; and a second set of partial eclipses from May 13, 1500 through July 27, 1608. The series ends at member 82 as a penumbral eclipse on February 10, 1933, though some sources count a possible penumbral eclipse on February 21, 1951 as the last eclipse of the series.The longest duration of totality was produced by member 36 at 98 minutes, 57 seconds on September 17, 1103. All eclipses in this series occur at the Moon’s descending node of orbit.
Eclipses are tabulated in three columns; every third eclipse in the same column is one exeligmos apart, so they all cast shadows over approximately the same parts of the Earth.