Asellus Borealis Observation Details
Asellus Borealis Daily Motion
Tonight, observing Asellus Borealis may prove challenging owing to its low elevation. It will reach its transit at by 08:42 and set before sunset at 15:51. Rising near twilight's end at 01:30, it will fade away by 03:46, peaking at just 26° above the horizon.Asellus Borealis will become visible in September, 13. After being too close to the Sun to observe, it will reappear in the night sky. Starting from September, 13, Asellus Borealis can be seen again, providing a good opportunity for observation.
Asellus Borealis Visibility Timetable on September 08
Asellus Borealis Rise and Set Timetable
| Time | Elevation | |
| Asellus Borealis transit | 08:42 | 74° |
| Asellus Borealis set | 15:51 | |
| Moon Rise, 99.8% illuminated | 17:33 | -16° |
| Astrosession begin | 18:56 | -26° |
| Asellus Borealis rise | 01:30 | |
| Astrosession end | 03:14 | 20° |
| Civil sunrise | 04:18 | 32° |
| Sunrise | 04:45 | 38° |
| Moon Set | 05:46 | 50° |
Track Asellus Borealis Position Throughout the Night
← Mon, 8 September 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. Although it is currently above the horizon at an altitude of 73 degrees, Asellus Borealis is not visible because it is daytime.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 | 08:18 |
| Latitude | 37.3541 |
| Longitude | -121.955 |
| Asellus Borealis elevation | 73° |
| Asellus Borealis Azimuth | -160° |
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 | Mon, 8 September 2025 |
| Twighlight start | 18:52 |
| Twighlight end | 03:08 |
| Twighlight duration | 8h 16m |
| Rise | 01:30 |
| Set | 15:47 |
| Elevation at transit | 74° |
| Transit time | 08:38 |
| 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 | 73.3° |
| Azimuth | -159.8° |