Close approach of Mercury and Moon on 11 September 2026 at 17:09
General information
The closest separation between Mercury and Moon will occur on 11 September 2026 at 17:09, when they will be separated by roughly 4.144°. The event occurs during daylight, making observation difficult.
Visibility window
The event begins when the separation drops below 5° at about 11:49, and ends when it grows beyond 5° at about 22:28. The objects can be followed during this interval when observing conditions permit.Elevation and direction at closest approach
At closest approach, Mercury and Moon will be approximately 5° above the horizon toward the west.Constellation
Both objects will be located in or near the constellation Virgo. This can help you locate them in the sky.Track Mercury / Moon relative positions
| Time | 1789178940 |
| Altitude | |
| Azimuth |
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Close approach dynamics
The map shows the event from your location. Switch to global view for geocentric (Earth-centered) coordinates.
Close approach details
| Mercury | Moon | |
|---|---|---|
| Time | 17:09 | |
| Angular separation (°) | 4.14 | |
| Geocentric coordinates | RA: 12h 09m 35s", Dec: 00° 24' 27s | RA: 12h 00m 20s", Dec: -3° 01' 47s |
| Topocentric coordinates | RA: 12h 09m 35s", Dec: 00° 24' 23s | RA: 11h 57m 18s", Dec: -3° 37' 09s |
| Distance | 1.3517 AU (202,211,442 km) | 0.00254 AU (379,979 km) |
| Angular size | 5" | 31' |
| Altitude (°) | 9 | 4 |
| Azimuth (°) | 264 West | 262 West |