12161+4040 Position and Visibility Tonight
Where is 12161+4040 right now?
12161+4040 is located in the constellation Canes Venatici. Although 12161+4040 is currently 35° above the horizon, it is not visible because it is daytime.
Twilight begins at 18:57 local time. At that moment, 12161+4040 will be 30° above the horizon toward the north-west.
Twilight begins at 18:57 local time. At that moment, 12161+4040 will be 30° above the horizon toward the north-west.
12161+4040 visibility on 2026-08-18
12161+4040 Visible from sunset until early morning
12161+4040 rise and set timetable
| Time | Elevation | |
Moonrise, 21% illuminated  | 09:49 | 46° |
| 12161+4040 transit | 13:38 | 87° |
| Sunset | 17:55 | 41° |
| Civil sunset | 18:24 | 36° |
| Twilight start | 18:57 | 30° |
| Astronomical observing session begins | 19:32 | 24° |
| Moonset | 20:26 | 15° |
| 12161+4040 set | 22:21 | |
| Astronomical observing session ends | 02:51 | -10° |
| 12161+4040 rise | 04:52 |
Track 12161+4040 Position Throughout the Night
← 18 August 2026 →
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Star system description: 12161+4040
System 12161+4040 — double star system, is located in the constellation Canes Venatici, at coordinates RA: 12h 16m 07s", Dec: 40° 39' 36s.
The primary and secondary magnitudes are 5.86 and 8.71. Their separation is 12.2 arcseconds, at position angle 259°. The magnitude difference is 2.85 magnitudes; the primary is approximately 13.8 times brighter.
The primary is red; the secondary is yellow-white.
The following technical data come from the Washington Double Star Catalog.
Y: Different parallaxes indicate a non-physical pair.
The primary and secondary magnitudes are 5.86 and 8.71. Their separation is 12.2 arcseconds, at position angle 259°. The magnitude difference is 2.85 magnitudes; the primary is approximately 13.8 times brighter.
The primary is red; the secondary is yellow-white.
The following technical data come from the Washington Double Star Catalog.
Technical details: 12161+4040
| Property | Value |
|---|---|
| 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) |
| Primary magnitude | 5.86 |
| Secondary magnitude | 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
Data source: Washington Double Star (WDS) Catalog. Maintained by the U.S. Naval Observatory; thanks to the WDS team.
Finder Chart for 2 CVn
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| Object name | 2 CVn |
| Field of view | |
| Limiting magnitude | |
| 2 CVn 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 | 08:46 |
| Latitude | 37.3541 |
| Longitude | -121.955 |
| Elevation | 35° |
| Azimuth | 62° |
Here you can see the current position of 12161+4040 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.
Annual motion of 12161+4040
12161+4040 will remain visible until August 19, when it moves too close to the Sun and temporarily disappears from the night sky.
| Date | Tue, 18 August 2026 |
| Twilight start | 19:28 |
| Twilight end | 02:44 |
| Twilight duration | 7h 17m |
| Rise | 04:52 |
| Set | 22:17 |
| Elevation at transit | 87° |
| Transit time | 13:34 |
| Equatorial coordinates | RA: 12h 16m 07s", Dec: 40° 39' 36s |
| Magnitude | 6 |
| Constellation | Canes Venatici |
The graph illustrates the annual visibility pattern of 12161+4040, 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 view detailed visibility information in a table with exact rise, transit, and set times for each date.
You can also view detailed visibility information in a table with exact rise, transit, and set times for each date.
Astrometric and Physical Parameters of 12161+4040
Coordinates and Visibility
| Right Ascension | 12.26875° |
| Declination | 40.66017° |
| Magnitude | 5.86 |
| Constellation | Canes Venatici |
| Elevation | 34.7° |
| Azimuth | 62° |