June 1974 lunar eclipse
| Partial eclipse | |||||||||||||
The Moon's hourly motion shown right to left | |||||||||||||
| Date | June 4, 1974 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gamma | −0.5489 | ||||||||||||
| Magnitude | 0.8270 | ||||||||||||
| Saros cycle | 120 (56 of 84) | ||||||||||||
| Partiality | 193 minutes, 35 seconds | ||||||||||||
| Penumbral | 341 minutes, 3 seconds | ||||||||||||
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A partial lunar eclipse occurred at the Moon’s ascending node of orbit on Tuesday, June 4, 1974, with an umbral magnitude of 0.8270. 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. Occurring about 4.5 days before apogee (on June 9, 1974, at 10:35 UTC), the Moon's apparent diameter was smaller.