Asellus Borealis Position and Visibility Tonight
Where is Asellus Borealis right now?
Asellus Borealis is located in the constellation Cancer. Although Asellus Borealis is currently 56° above the horizon, it is not visible because it is daytime.
Asellus Borealis visibility on 2026-09-17
Asellus Borealis Visible from early morning until sunrise
Asellus Borealis rise and set timetable
| Time | Elevation | |
| Asellus Borealis transit | 08:08 | 74° |
Moonrise, 24% illuminated  | 10:43 | 53° |
| Asellus Borealis set | 15:17 | |
| Astronomical observing session begins | 18:41 | -28° |
| Moonset | 20:07 | -31° |
| Asellus Borealis rise | 00:55 | |
| Astronomical observing session ends | 03:23 | 28° |
| Twilight end (−12°) | 03:54 | 34° |
| Civil sunrise | 04:25 | 40° |
| Sunrise | 04:52 | 46° |
Track Asellus Borealis position throughout the night
← 17 September 2026 →
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| Altitude | |
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Shift the map to change the time and observe Asellus Borealis changing position in the night sky.
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 | 10:25 |
| Latitude | 37.3541 |
| Longitude | -121.955 |
| Elevation | 56° |
| Azimuth | 252° |
Here you can see the current position of Asellus Borealis on the map, as well as its positions for rise and set. This tool lets you track its movement throughout the night with accurate, up-to-date information.
When Is Asellus Borealis Visible Throughout the Year?
Asellus Borealis will remain visible until June 5, when it moves too close to the Sun and temporarily disappears from the night sky.
| Date | Thu, 17 September 2026 |
| Astronomical observing session begins | 18:37 |
| Astronomical observing session ends | 03:17 |
| Astronomical observing duration | 9h 40m |
| Rise | 00:55 |
| Set | 15:13 |
| Elevation at transit | 74° |
| Transit time | 08:04 |
| Equatorial coordinates | RA: 08h 43m 17s", Dec: 21° 28' 06s |
| Magnitude | 5 |
| Constellation | Cancer |
The graph illustrates the annual visibility pattern of Asellus Borealis, including its daily appearances and transit times. The vertical axis shows the hours of the day and the horizontal axis spans the year. The reddish area marks when the object is above the horizon, while the white line marks its daily transit.
You can also see when Asellus Borealis is visible throughout the year in a table with exact rise, transit, and set times for each date.
You can also see when Asellus Borealis is visible throughout the year in a table with exact rise, transit, and set times for each date.
Astrometric and Physical Parameters of Asellus Borealis
Coordinates and Visibility
| Right Ascension | 08h 43m 17s |
| Declination | 21° 28′ 07″ |
| Magnitude | 4.66 |
| Constellation | Cancer |
| Elevation | 56.4° |
| Azimuth | 251.6° |
| Spectral type | A1IV |