Close approach of Mars and Moon on 31 October 2027 at 20:22
General information
The closest separation between Mars and Moon will occur on 31 October 2027 at 20:22, when they will be separated by roughly 3.241°. At closest approach: Both objects will be below the horizon and cannot be observed. An observing opportunity within the separation window: 31 October 2027 at 13:26, separation about 5.7°.
Visibility window
The event begins when the separation drops below 6° at about 31 October 2027 at 10:26, and ends when it grows beyond 6° at about 1 November 2027 at 06:25. The objects can be followed during this interval when observing conditions permit.Elevation and direction at closest approach
At closest approach, Mars and Moon will be approximately -70° above the horizon toward the north-west.Constellation
Both objects will be located in or near the constellation Ophiuchus. This can help you locate them in the sky.Track Mars / Moon relative positions
| Time | 1825050120 |
| 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
| Mars | Moon | |
|---|---|---|
| Time | 20:22 | |
| Angular separation (°) | 3.24 | |
| Geocentric coordinates | RA: 16h 40m 28s", Dec: -23° 02' 38s | RA: 16h 39m 17s", Dec: -26° 16' 25s |
| Topocentric coordinates | RA: 16h 40m 28s", Dec: -23° 02' 39s | RA: 16h 38m 22s", Dec: -26° 30' 22s |
| Distance | 2.1737 AU (325,180,892 km) | 0.0026 AU (388,954 km) |
| Angular size | 4.3" | 31' |
| Altitude (°) | -68 | -71 |
| Azimuth (°) | 314 Northwest | 309 Northwest |