Alcor Position and Visibility Tonight
Where is Alcor right now?
Alcor is located in the constellation Ursa Major. At the current time, it is above the horizon at an altitude of 49 degrees toward the northeast from your location, with an apparent magnitude of 3.99.
Twilight begins at 03:24 local time, and at that moment, Alcor will appear at an altitude of 49 degrees toward the northeast.
Twilight begins at 03:24 local time, and at that moment, Alcor will appear at an altitude of 49 degrees toward the northeast.
Alcor Visibility on April 04
Alcor is Not visible tonight
Alcor Rise and Set Timetable
| Time | Elevation | |
| Alcor is always above the horizon | ||
| Sunset | 17:31 | 28° |
| Civil sunset | 17:58 | 32° |
| Astrosession begin | 19:02 | 41° |
| Alcor is always above the horizon | ||
Moon Rise, 96.3% illuminated  | 19:34 | 45° |
| Alcor transit | 23:42 | 72° |
| Astrosession end | 03:19 | 50° |
| Civil sunrise | 04:22 | 41° |
| Sunrise | 04:49 | 37° |
| Moon Set | 05:48 | 29° |
Track Alcor Position Throughout the Night
← Sat, 4 April 2026 →
| Time | |
| Altitude | |
| Azimuth |
Shift the map to change the time and observe Alcor changing position in the night sky.
Finder Chart for Alcor
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| Object name | Alcor |
| Field of view | |
| Limiting magnitude | |
| Alcor coordinates | 13.420413, 54.987958 |
| Center coordinates | 13.420413, 54.987958 |
Alcor Passage Through Night
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Current position of Alcor
| Time | 03:24 |
| Latitude | 37.3541 |
| Longitude | -121.955 |
| Alcor elevation | 49° |
| Alcor Azimuth | 46° |
Here you can see the current position of the Alcor on the map, as well as its positions for rise and set. This tool allows you to track the Alcor's movement throughout the night, providing you with accurate and up-to-date information.
Annual motion of Alcor
Alcor will be visible until October, 3, when it will move too close to the Sun. During this time, its proximity to the Sun will cause it to disappear from the night sky, making it unobservable for a while.
| Date | Sun, 5 April 2026 |
| Twighlight start | 18:58 |
| Twighlight end | 03:12 |
| Twighlight duration | 8h 14m |
| Rise | Alcor is always up |
| Set | Alcor is always up |
| Elevation at transit | 72° |
| Transit time | 23:38 |
| Equatorial coordinates | RA: 13h 25m 13s", Dec: 54° 59' 16s |
| Magnitude | 4 |
| Constellation | Ursa Major |
The graph illustrates the annual visibility pattern of a Alcor, providing a comprehensive overview of its daily appearances and transit times throughout the year.
The graph is structured with the vertical axis showing the hours of the day, ranging from 12 AM to 12 AM the next day, while the horizontal axis spans each day of the year.
The reddish shaded area indicates the periods when the Alcor is above the horizon, visible to observers. The white line marks the times when the celestial object reaches its highest point in the sky each day, known as the transit.
You can also view detailed visibility information in a dedicated table, including exact rise, transit, and set times for each date.
The graph is structured with the vertical axis showing the hours of the day, ranging from 12 AM to 12 AM the next day, while the horizontal axis spans each day of the year.
The reddish shaded area indicates the periods when the Alcor is above the horizon, visible to observers. The white line marks the times when the celestial object reaches its highest point in the sky each day, known as the transit.
You can also view detailed visibility information in a dedicated table, including exact rise, transit, and set times for each date.
Astrometric & Physical Parameters of Alcor
Coordinates & Visibility
| Right Ascension | 13.420413° |
| Declination | 54.987958° |
| Magnitude | 3.99 |
| Constellation | Ursa Major |
| Elevation | 48.9° |
| Azimuth | 46.2° |