Asellus Borealis Observation Details
Asellus Borealis Daily Motion
Asellus Borealis will be visible until June, 5, 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.
Asellus Borealis Visibility Timetable on October 06
Asellus Borealis Rise and Set Timetable
| Time | Elevation | |
| Asellus Borealis transit | 06:52 | 74° |
| Asellus Borealis set | 14:01 | |
| Moon Rise, 98.2% illuminated | 15:57 | -18° |
| Astrosession begin | 18:10 | -30° |
| Asellus Borealis rise | 23:40 | |
| Astrosession end | 03:41 | 47° |
| Moon Set | 04:33 | 57° |
| Civil sunrise | 04:41 | 58° |
| Sunrise | 05:09 | 63° |
Track Asellus Borealis Position Throughout the Night
← Mon, 6 October 2025 →
| Time | |
| Altitude | |
| Azimuth |
Shift the map to change the time and observe Asellus Borealis changing position in the night sky.
Where is Asellus Borealis right now?
Asellus Borealis is located in the constellation Cancer, at right ascension 08h 43m 17s" and declination 21° 28' 06s. At the current time, it is above the horizon at an altitude of 44 degrees toward the west from your location, with an apparent magnitude of 4.66.Finder Chart for Asellus Borealis
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| Object name | Asellus Borealis |
| Field of view | |
| Limiting magnitude | |
| Asellus Borealis coordinates | 8.721430999999999, 21.468501 |
| Center coordinates | 8.721430999999999, 21.468501 |
Asellus Borealis Passage Through Night
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Current position of Asellus Borealis
| Time | 03:27 |
| Latitude | 37.3541 |
| Longitude | -121.955 |
| Asellus Borealis elevation | 44° |
| Asellus Borealis Azimuth | -95° |
Here you can see the current position of the Asellus Borealis on the map, as well as its positions for rise and set. This tool allows you to track the Asellus Borealis's movement throughout the night, providing you with accurate and up-to-date information.
Annual motion of Asellus Borealis
| Date | Tue, 7 October 2025 |
| Twighlight start | 18:05 |
| Twighlight end | 03:35 |
| Twighlight duration | 10h 31m |
| Rise | 23:36 |
| Set | 13:53 |
| Elevation at transit | 74° |
| Transit time | 06:44 |
| Equatorial coordinates | RA: 08h 43m 17s", Dec: 21° 28' 06s |
| Magnitude | 5 |
| Constellation | Cancer |
The graph illustrates the annual visibility pattern of a Asellus Borealis, 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 Asellus Borealis 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.
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 Asellus Borealis 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.
Astrometric & Physical Parameters of Asellus Borealis
Coordinates & Visibility
| Right Ascension | 8.721430999999999° |
| Declination | 21.468501° |
| Magnitude | 4.66 |
| Constellation | Cancer |
| Elevation | 43.9° |
| Azimuth | -95.4° |