Double Star 11538+5342 Position and Visibility Tonight
Where is 11538+5342 right now?
11538+5342 is located in the constellation Ursa Major. Although it is currently above the horizon at an altitude of 26 degrees, 11538+5342 is not visible because it is daytime.
Twilight begins at 18:19 local time, and at that moment, 11538+5342 will appear at an altitude of 38 degrees toward the northwest.
Twilight begins at 18:19 local time, and at that moment, 11538+5342 will appear at an altitude of 38 degrees toward the northwest.
11538+5342 Visibility on March 18
11538+5342 is visible all night until sunrise
11538+5342 Rise and Set Timetable
| Time | Elevation | |
| 11538+5342 is always above the horizon | ||
Moon Rise, 5.1% illuminated  | 04:32 | 36° |
| Moon Set | 16:10 | 20° |
| Sunset | 17:21 | 30° |
| Civil sunset | 17:49 | 33° |
| Astrosession begin | 18:50 | 42° |
| 11538+5342 is always above the horizon | ||
| 11538+5342 transit | 23:18 | 74° |
| Astrosession end | 03:41 | 43° |
| Civil sunrise | 04:43 | 34° |
| Sunrise | 05:10 | 30° |
Track 11538+5342 Position Throughout the Night
← Wed, 18 March 2026 →
| Time | |
| Altitude | |
| Azimuth |
Shift the map to change the time and observe 11538+5342 changing position in the night sky.
11538+5342 Star System Description
11538+5342 is Double Star System located in constellation Ursa Major at coordinates RA: 11h 53m 49s", Dec: 53° 41' 40s.
The primary component has a magnitude of 2.40, while the secondary component has a magnitude of 8.21. They are separated by 16.7 arcminutes at a position angle of 75 degrees. The brightness difference between the two components is 5.81 magnitudes, with the primary component being approximately 210.9 times brighter than the secondary.
The primary star is white in color, and the secondary star is orange.
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.
V: Proper motion or other technique indicates that this pair is physical.
The primary component has a magnitude of 2.40, while the secondary component has a magnitude of 8.21. They are separated by 16.7 arcminutes at a position angle of 75 degrees. The brightness difference between the two components is 5.81 magnitudes, with the primary component being approximately 210.9 times brighter than the secondary.
The primary star is white in color, and the secondary star is orange.
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 11538+5342
| Property | Value |
|---|---|
| Star System Identifier | 11538+5342 |
| System Type | Double Star System |
| Primary Star | gam UMa |
| Right Ascension (RA) | 11.89714 (11h 53m 49s") |
| Declination (Dec) | 53.69472 (53° 41' 40s) |
| Magnitude (Primary) | 2.40 |
| Magnitude (Secondary) | 8.21 |
| Spectral Type (Primary/Secondary) | A0Ve+K2V (white/orange) |
| Separation (Arcseconds) | 999.9 |
| Position Angle | 75° |
| Discovery Year | 1991 |
| Last Observed | 1999 |
| Primary Proper Motion (Ra, Dec) | +103+010 |
| Secondary Proper Motion (Ra, Dec) | +108-001 |
| Number of Observations | 3 |
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 gam UMa
Double-click to unlock the map.
| Object name | 11538+5342 |
| Field of view | |
| Limiting magnitude | |
| 11538+5342 coordinates | 11.89714, 53.69472 |
| Center coordinates | 11.89714, 53.69472 |
11538+5342 Passage Through Night
Double-click to unlock the map.
Current position of 11538+5342
| Time | 05:41 |
| Latitude | 37.3541 |
| Longitude | -121.955 |
| 11538+5342 elevation | 26° |
| 11538+5342 Azimuth | 41° |
Here you can see the current position of the 11538+5342 on the map, as well as its positions for rise and set. This tool allows you to track the 11538+5342's movement throughout the night, providing you with accurate and up-to-date information.
Annual motion of 11538+5342
11538+5342 will be visible until August, 24, 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.
| Date | Wed, 18 March 2026 |
| Twighlight start | 18:39 |
| Twighlight end | 03:41 |
| Twighlight duration | 9h 2m |
| Rise | 11538+5342 is always up |
| Set | 11538+5342 is always up |
| Elevation at transit | 74° |
| Transit time | 23:18 |
| Equatorial coordinates | RA: 11h 53m 49s", Dec: 53° 41' 40s |
| Magnitude | 2 |
| Constellation | Ursa Major |
The graph illustrates the annual visibility pattern of a 11538+5342, 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 11538+5342 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.
You can also view detailed visibility information in a dedicated table, including exact rise, transit, and set times for each date.
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 11538+5342 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.
You can also view detailed visibility information in a dedicated table, including exact rise, transit, and set times for each date.
Astrometric & Physical Parameters of 11538+5342
Coordinates & Visibility
| Right Ascension | 11.89714° |
| Declination | 53.69472° |
| Magnitude | 2.40 |
| Constellation | Ursa Major |
| Elevation | 26.5° |
| Azimuth | 41.2° |