September 1933 lunar eclipse
| Penumbral eclipse | |||||||||
The Moon's hourly motion shown right to left | |||||||||
| Date | September 4, 1933 | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Gamma | 1.1776 | ||||||||
| Magnitude | −0.3012 | ||||||||
| Saros cycle | 146 (6 of 72) | ||||||||
| Penumbral | 221 minutes, 24 seconds | ||||||||
| |||||||||
A penumbral lunar eclipse occurred at the Moon’s ascending node of orbit on Monday, September 4, 1933, with an umbral magnitude of −0.7336. 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. Occurring about 3.9 days after perigee (on August 31, 1933, at 6:30 UTC), the Moon's apparent diameter was larger.
This eclipse was the last of four penumbral lunar eclipses in 1933, with the others occurring on February 10, March 12, and August 5.