Partial Lunar Eclipse on Mon, 7 August 2017 – Path & Viewing Guide
Global Eclipse Conditions
A partial lunar eclipse occurs when only part of the Moon enters Earth's darker umbral shadow. The eclipse begins with a subtle penumbral phase at 06:51 (GMT-9), which may be hard to detect without instruments. The visible partial phase starts at 08:23, when Earth’s umbra begins to cover a portion of the lunar surface, creating a distinct dark bite on the Moon.At 09:21, the eclipse reaches its peak, with up to 18% of the Moon covered by Earth’s shadow. After this, the shadow gradually recedes, and the partial phase ends at 10:21. The eclipse concludes with the Moon exiting the penumbra at 11:52.
Local Eclipse Phase Times
| Phase | Time (GMT-9) | Local Visibility |
|---|---|---|
| Penumbral Eclipse Begins | 06:51 | - |
| Partial Eclipse Begins | 08:23 | - |
| The maximum eclipse occurs at 09:21. The eclipse is partial with 18% coverage. | ||
| Partial Eclipse Ends | 10:21 | - |
| Penumbral Eclipse Ends | 11:52 | - |
Global Eclipse Path
Local Eclipse Conditions at (GMT-9)
Earth's Shadow and Moon relative positions.
Local Eclipse Parameters
| Eclipse Phase | |
| Penumbral Magnitude | |
| Umbral Magnitude | |
| Penumbral Coverage | |
| Umbral Coverage | |
| Umbra Size, km | |
| Penumbra Size, km | |
| Distance to Shadow Center, km |
Observation Parameters
| Time | |
| Latitude | 37.3541 |
| Longitude | -121.955 |
| Moon Elevation | -121.955 |
| Moon Azimuth | -121.955 |