Double Star 15318+4054 Observation Details
15318+4054 Daily Motion
15318+4054 will rise before twilight begins, at 14:08, and will reach 79° elevation by the time twilight commences at 22:18. It will reach its transit at 89° by 23:13 and gradually fade away as the night ends at 04:48, maintaining an elevation of around 29°.15318+4054 will be visible until November, 8, 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.
15318+4054 Visibility Timetable on June 19
15318+4054 Rise and Set Timetable
| Time | Elevation | |
| 15318+4054 rise | 14:08 | |
| Sunset | 21:02 | 65° |
| Civil sunset | 21:36 | 72° |
| Astrosession begin | 23:06 | 88° |
| 15318+4054 transit | 23:13 | 89° |
| Moon Rise, 45.2% illuminated | 01:45 | 61° |
| Astrosession end | 03:59 | 37° |
| Civil sunrise | 05:30 | 22° |
| Sunrise | 06:04 | 17° |
| 15318+4054 set | 08:18 | |
| Moon Set | 14:38 | 4° |
Track 15318+4054 Position Throughout the Night
← Thu, 19 June 2025 →
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15318+4054 Star System Description
15318+4054 is Quadruple Star System located in constellation Bootes at coordinates RA: 15h 31m 46s", Dec: 40° 53' 57s.
The primary component has a magnitude of 5.8, while the secondary component has a magnitude of 5.8. They are separated by 0.1 arcseconds at a position angle of 237 degrees. The brightness difference between the two components is 0 magnitudes, with the primary component being approximately 1 times brighter than the secondary.
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 5.8, while the secondary component has a magnitude of 5.8. They are separated by 0.1 arcseconds at a position angle of 237 degrees. The brightness difference between the two components is 0 magnitudes, with the primary component being approximately 1 times brighter than the secondary.
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 15318+4054
| Property | Value |
|---|---|
| Star System Identifier | 15318+4054 |
| System Type | Quadruple Star System |
| Primary Star | nu 2 Boo |
| Right Ascension (RA) | 15.52969 (15h 31m 46s") |
| Declination (Dec) | 40.89936 (40° 53' 57s) |
| Magnitude (Primary) | 5.8 |
| Magnitude (Secondary) | 5.8 |
| Spectral Type (Primary/Secondary) | A5V |
| Separation (Arcseconds) | 0.1 |
| Position Angle | 237° |
| Discovery Year | 1907 |
| Last Observed | 2015 |
| Primary Proper Motion (Ra, Dec) | -018-009 |
| Secondary Proper Motion (Ra, Dec) | |
| Number of Observations | 60 |
15318+4054 Components
| Component | Magnitude | Separation (arcseconds) | Position Angle |
| AB | 5.8 | 0.1 | 237 |
| AB,C | 13.94 | 91.6 | 89 |
| AB,D | 14.19 | 119.2 | 319 |
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 nu 2 Boo
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| Object name | 15318+4054 |
| Field of view | |
| Limiting magnitude | |
| 15318+4054 coordinates | 15.52969, 40.89936 |
| Center coordinates | 15.52969, 40.89936 |
15318+4054 Passage Through Night
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Current position of 15318+4054
| Time | 08:46 |
| Latitude | 39.9625 |
| Longitude | -83.0061 |
| 15318+4054 elevation | -2° |
| 15318+4054 Azimuth | 27° |
Here you can see the current position of the 15318+4054 on the map, as well as its positions for rise and set. This tool allows you to track the 15318+4054's movement throughout the night, providing you with accurate and up-to-date information.
Annual motion of 15318+4054
| Date | Thu, 19 June 2025 |
| Twighlight start | 23:02 |
| Twighlight end | 03:54 |
| Twighlight duration | 5h 52m |
| Rise | 14:08 |
| Set | 08:18 |
| Elevation at transit | 89° |
| Transit time | 23:13 |
| Equatorial coordinates | RA: 15h 31m 46s", Dec: 40° 53' 57s |
| Magnitude | 6 |
| Constellation | Bootes |
The graph illustrates the annual visibility pattern of a 15318+4054, 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 15318+4054 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 15318+4054 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.