Double Star 12161+4040 Observation Details
12161+4040 Daily Motion
12161+4040 will be visible until August, 19, 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.
12161+4040 Visibility Timetable on October 27
12161+4040 Rise and Set Timetable
| Time | Elevation | |
| 12161+4040 transit | 09:02 | 87° |
| Moon Rise, 23.5% illuminated | 10:29 | 73° |
| Sunset | 16:14 | 12° |
| Civil sunset | 16:42 | 8° |
| Astrosession begin | 17:43 | 0° |
| 12161+4040 set | 17:44 | |
| Moon Set | 19:34 | -10° |
| 12161+4040 rise | 00:16 | |
| Astrosession end | 04:00 | 34° |
| Civil sunrise | 05:01 | 45° |
| Sunrise | 05:29 | 50° |
Track 12161+4040 Position Throughout the Night
← Mon, 27 October 2025 →
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Shift the map to change the time and observe 12161+4040 changing position in the night sky.
Where is 12161+4040 right now?
12161+4040 is located in the constellation Canes Venatici, at right ascension 12h 16m 07s" and declination 40° 39' 36s. Although it is currently above the horizon at an altitude of 19 degrees, 12161+4040 is not visible because it is daytime.12161+4040 Star System Description
12161+4040 is Double Star System located in constellation Canes Venatici at coordinates RA: 12h 16m 07s", Dec: 40° 39' 36s.
The primary component has a magnitude of 5.86, while the secondary component has a magnitude of 8.71. They are separated by 12.2 arcseconds at a position angle of 259 degrees. The brightness difference between the two components is 2.85 magnitudes, with the primary component being approximately 13.8 times brighter than the secondary.
The primary star is red in color, and the secondary star is yellow-white.
Below is a table with star system details from the Washington Double Star (WDS) Catalog. This catalog is a comprehensive source of information on double and multiple star systems, providing key data on the positions, magnitudes, and separations of stellar components.
Y: Statistically different parallax for the components indicates they are non-physical.
The primary component has a magnitude of 5.86, while the secondary component has a magnitude of 8.71. They are separated by 12.2 arcseconds at a position angle of 259 degrees. The brightness difference between the two components is 2.85 magnitudes, with the primary component being approximately 13.8 times brighter than the secondary.
The primary star is red in color, and the secondary star is yellow-white.
Below is a table with star system details from the Washington Double Star (WDS) Catalog. This catalog is a comprehensive source of information on double and multiple star systems, providing key data on the positions, magnitudes, and separations of stellar components.
Technical Details of Star System 12161+4040
| Property | Value |
|---|---|
| Star System Identifier | 12161+4040 |
| System Type | Double Star System |
| Primary Star | 2 CVn |
| Right Ascension (RA) | 12.26875 (12h 16m 07s") |
| Declination (Dec) | 40.66017 (40° 39' 36s) |
| Magnitude (Primary) | 5.86 |
| Magnitude (Secondary) | 8.71 |
| Spectral Type (Primary/Secondary) | M1III+F7V (red/yellow-white) |
| Separation (Arcseconds) | 12.2 |
| Position Angle | 259° |
| Discovery Year | 1782 |
| Last Observed | 2017 |
| Primary Proper Motion (Ra, Dec) | +017-031 |
| Secondary Proper Motion (Ra, Dec) | +023-013 |
| Number of Observations | 82 |
Notes
The data presented in this table is sourced from the Washington Double Star (WDS) Catalog, a comprehensive repository of double and multiple star system information maintained by the U.S. Naval Observatory. We thank the WDS team for their continued efforts in providing accurate and detailed astronomical data.
Finder Chart for 2 CVn
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| Object name | 12161+4040 |
| Field of view | |
| Limiting magnitude | |
| 12161+4040 coordinates | 12.26875, 40.66017 |
| Center coordinates | 12.26875, 40.66017 |
12161+4040 Passage Through Night
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Current position of 12161+4040
| Time | 15:26 |
| Latitude | 37.3541 |
| Longitude | -121.955 |
| 12161+4040 elevation | 19° |
| 12161+4040 Azimuth | 53° |
Here you can see the current position of the 12161+4040 on the map, as well as its positions for rise and set. This tool allows you to track the 12161+4040's movement throughout the night, providing you with accurate and up-to-date information.
Annual motion of 12161+4040
| Date | Tue, 28 October 2025 |
| Twighlight start | 17:42 |
| Twighlight end | 03:58 |
| Twighlight duration | 10h 16m |
| Rise | 00:16 |
| Set | 17:41 |
| Elevation at transit | 87° |
| Transit time | 08:58 |
| Equatorial coordinates | RA: 12h 16m 07s", Dec: 40° 39' 36s |
| Magnitude | 6 |
| Constellation | Canes Venatici |
The graph illustrates the annual visibility pattern of a 12161+4040, 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 12161+4040 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 12161+4040 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 12161+4040
Coordinates & Visibility
| Right Ascension | 12.26875° |
| Declination | 40.66017° |
| Magnitude | 5.86 |
| Constellation | Canes Venatici |
| Elevation | 19.2° |
| Azimuth | 53° |