June 1983 lunar eclipse
| Partial eclipse | |||||||||||||
The Moon's hourly motion shown right to left | |||||||||||||
| Date | June 25, 1983 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gamma | −0.8152 | ||||||||||||
| Magnitude | 0.3348 | ||||||||||||
| Saros cycle | 139 (20 of 81) | ||||||||||||
| Partiality | 134 minutes, 35 seconds | ||||||||||||
| Penumbral | 314 minutes, 43 seconds | ||||||||||||
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A partial lunar eclipse occurred at the Moon’s descending node of orbit on Saturday, June 25, 1983, with an umbral magnitude of 0.3348. 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 3.7 days before apogee (on June 28, 1983, at 23:40 UTC), the Moon's apparent diameter was smaller.