Double Star 15155+3319 Observation Details
15155+3319 Daily Motion
15155+3319 will reach transit at 15:33. By the time twilight starts at 22:31 it will be at an elevation of 9° degrees and will set at 23:32, before twilight ends.15155+3319 will be visible until October, 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.
15155+3319 Visibility Timetable on September 03
15155+3319 Rise and Set Timetable
| Time | Elevation | |
| Moon Rise, 75.5% illuminated | 14:44 | 79° |
| 15155+3319 transit | 15:33 | 86° |
| Sunset | 17:33 | 65° |
| Civil sunset | 18:01 | 60° |
| Astrosession begin | 19:05 | 47° |
| 15155+3319 set | 23:32 | |
| Moon Set | 23:57 | -4° |
| Astrosession end | 03:09 | -19° |
| 15155+3319 rise | 07:30 |
Track 15155+3319 Position Throughout the Night
← Wed, 3 September 2025 →
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Shift the map to change the time and observe 15155+3319 changing position in the night sky.
Where is 15155+3319 right now?
15155+3319 is located in the constellation Bootes, at right ascension 15h 15m 30s" and declination 33° 18' 53s. At the current time, it is above the horizon at an altitude of 9 degrees toward the northeast from your location, with an apparent magnitude of 3.56.15155+3319 Star System Description
15155+3319 is Triple Star System located in constellation Bootes at coordinates RA: 15h 15m 30s", Dec: 33° 18' 53s.
The primary component has a magnitude of 3.56, while the secondary component has a magnitude of 7.89. They are separated by 2.3 arcminutes at a position angle of 84 degrees. The brightness difference between the two components is 4.33 magnitudes, with the primary component being approximately 54 times brighter than the secondary.
The primary and secondary stars are both yellow in color
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.
The primary component has a magnitude of 3.56, while the secondary component has a magnitude of 7.89. They are separated by 2.3 arcminutes at a position angle of 84 degrees. The brightness difference between the two components is 4.33 magnitudes, with the primary component being approximately 54 times brighter than the secondary.
The primary and secondary stars are both yellow in color
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 15155+3319
| Property | Value |
|---|---|
| Star System Identifier | 15155+3319 |
| System Type | Triple Star System |
| Primary Star | 49 Boo |
| Right Ascension (RA) | 15.25836 (15h 15m 30s") |
| Declination (Dec) | 33.31483 (33° 18' 53s) |
| Magnitude (Primary) | 3.56 |
| Magnitude (Secondary) | 7.89 |
| Spectral Type (Primary/Secondary) | G8III+G0V (yellow/yellow) |
| Separation (Arcseconds) | 135.0 |
| Position Angle | 84° |
| Discovery Year | 1780 |
| Last Observed | 2023 |
| Primary Proper Motion (Ra, Dec) | +085-112 |
| Secondary Proper Motion (Ra, Dec) | +082-110 |
| Number of Observations | 129 |
15155+3319 Components
| Component | Magnitude | Separation (arcseconds) | Position Angle |
| AB | 7.89 | 135.0 | 84 |
| AC | 14.30 | 92.4 | 5 |
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 49 Boo
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| Object name | 15155+3319 |
| Field of view | |
| Limiting magnitude | |
| 15155+3319 coordinates | 15.25836, 33.31483 |
| Center coordinates | 15.25836, 33.31483 |
15155+3319 Passage Through Night
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Current position of 15155+3319
| Time | 22:31 |
| Latitude | 37.3541 |
| Longitude | -121.955 |
| 15155+3319 elevation | 9° |
| 15155+3319 Azimuth | 55° |
Here you can see the current position of the 15155+3319 on the map, as well as its positions for rise and set. This tool allows you to track the 15155+3319's movement throughout the night, providing you with accurate and up-to-date information.
Annual motion of 15155+3319
| Date | Thu, 4 September 2025 |
| Twighlight start | 19:03 |
| Twighlight end | 03:08 |
| Twighlight duration | 8h 5m |
| Rise | 07:30 |
| Set | 23:28 |
| Elevation at transit | 86° |
| Transit time | 15:29 |
| Equatorial coordinates | RA: 15h 15m 30s", Dec: 33° 18' 53s |
| Magnitude | 4 |
| Constellation | Bootes |
The graph illustrates the annual visibility pattern of a 15155+3319, 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 15155+3319 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 15155+3319 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 15155+3319
Coordinates & Visibility
| Right Ascension | 15.25836° |
| Declination | 33.31483° |
| Magnitude | 3.56 |
| Constellation | Bootes |
| Elevation | 9.4° |
| Azimuth | 55° |