Double Star 10306+5559 Observation Details
10306+5559 Daily Motion
10306+5559 is circumpolar, never setting below the horizon and always visible in the night sky from your location. However, it will change its position significantly, moving 68 degrees over time. You can find the best times to observe 10306+5559, when it reaches its highest elevation, in the annual motion section.10306+5559 will be visible until July, 28, 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.
10306+5559 Visibility Timetable on May 20
10306+5559 Rise and Set Timetable
| Time | Elevation | |
| 10306+5559 is always above the horizon | ||
| 10306+5559 transit | 20:11 | 74° |
| Sunset | 20:42 | 73° |
| Civil sunset | 21:15 | 71° |
| Astrosession begin | 22:37 | 61° |
| 10306+5559 is always above the horizon | ||
| Moon Rise, 52.6% illuminated | 02:29 | 30° |
| Astrosession end | 04:19 | 18° |
| Civil sunrise | 05:41 | 11° |
| Sunrise | 06:13 | 9° |
| Moon Set | 13:16 | 26° |
Track 10306+5559 Position Throughout the Night
← Tue, 20 May 2025 →
| Time | |
| Altitude | |
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Shift the map to change the time and observe 10306+5559 changing position in the night sky.
10306+5559 Star System Description
10306+5559 is Triple Star System located in constellation Ursa Major at coordinates RA: 10h 30m 37s", Dec: 55° 58' 49s.
The primary component has a magnitude of 4.88, while the secondary component has a magnitude of 8.86. They are separated by 2 arcminutes at a position angle of 303 degrees. The brightness difference between the two components is 3.98 magnitudes, with the primary component being approximately 39.1 times brighter than the secondary.
The primary star is yellow-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 4.88, while the secondary component has a magnitude of 8.86. They are separated by 2 arcminutes at a position angle of 303 degrees. The brightness difference between the two components is 3.98 magnitudes, with the primary component being approximately 39.1 times brighter than the secondary.
The primary star is yellow-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 10306+5559
| Property | Value |
|---|---|
| Star System Identifier | 10306+5559 |
| System Type | Triple Star System |
| Primary Star | 36 UMa |
| Right Ascension (RA) | 10.51042 (10h 30m 37s") |
| Declination (Dec) | 55.98053 (55° 58' 49s) |
| Magnitude (Primary) | 4.88 |
| Magnitude (Secondary) | 8.86 |
| Spectral Type (Primary/Secondary) | F8V+K7V (yellow-white/orange) |
| Separation (Arcseconds) | 122.5 |
| Position Angle | 303° |
| Discovery Year | 1905 |
| Last Observed | 2016 |
| Primary Proper Motion (Ra, Dec) | -177-033 |
| Secondary Proper Motion (Ra, Dec) | -182-031 |
| Number of Observations | 22 |
10306+5559 Components
| Component | Magnitude | Separation (arcseconds) | Position Angle |
| AB | 8.86 | 122.5 | 303 |
| AC | 11.44 | 242.3 | 291 |
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 36 UMa
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| Object name | 10306+5559 |
| Field of view | |
| Limiting magnitude | |
| 10306+5559 coordinates | 10.51042, 55.98053 |
| Center coordinates | 10.51042, 55.98053 |
10306+5559 Passage Through Night
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Current position of 10306+5559
| Time | 12:44 |
| Latitude | 39.9625 |
| Longitude | -83.0061 |
| 10306+5559 elevation | 22° |
| 10306+5559 Azimuth | -34° |
Here you can see the current position of the 10306+5559 on the map, as well as its positions for rise and set. This tool allows you to track the 10306+5559's movement throughout the night, providing you with accurate and up-to-date information.
Annual motion of 10306+5559
| Date | Tue, 20 May 2025 |
| Twighlight start | 22:33 |
| Twighlight end | 04:14 |
| Twighlight duration | 6h 41m |
| Rise | 10306+5559 is always up |
| Set | 10306+5559 is always up |
| Elevation at transit | 74° |
| Transit time | 20:07 |
| Equatorial coordinates | RA: 10h 30m 37s", Dec: 55° 58' 49s |
| Magnitude | 5 |
| Constellation | Ursa Major |
The graph illustrates the annual visibility pattern of a 10306+5559, 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 10306+5559 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 10306+5559 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.