Close approach of Mercury and Moon on 1 October 2027 at 14:21
General information
The closest separation between Mercury and Moon will occur on 1 October 2027 at 14:21, when they will be separated by roughly 1.646°. The event occurs during daylight, making observation difficult.
Visibility window
The event begins when the separation drops below 5° at about 05:52, and ends when it grows beyond 5° at about 22:54. 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 29° above the horizon toward the south-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 | 1822432860 |
| Altitude | |
| Azimuth |
Move the map to change the time and follow how the objects change position in the sky.
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 | 14:21 | |
| Angular separation (°) | 1.65 | |
| Geocentric coordinates | RA: 13h 59m 20s", Dec: -15° 47' 43s | RA: 13h 56m 54s", Dec: -17° 20' 07s |
| Topocentric coordinates | RA: 13h 59m 19s", Dec: -15° 47' 51s | RA: 13h 55m 17s", Dec: -18° 06' 19s |
| Distance | 0.8622 AU (128,983,284 km) | 0.00251 AU (375,491 km) |
| Angular size | 7.8" | 32' |
| Altitude (°) | 30 | 28 |
| Azimuth (°) | 213 Southwest | 212 Southwest |