Double Star 17104-1544 Position and Visibility Tonight
Where is 17104-1544 right now?
17104-1544 is located in the constellation Ophiuchus. At the current time, it is above the horizon at an altitude of 33 degrees toward the southeast from your location, with an apparent magnitude of 3.05.
Twilight begins at 02:03 local time, and at that moment, 17104-1544 will appear at an altitude of 33 degrees toward the southeast.
Twilight begins at 02:03 local time, and at that moment, 17104-1544 will appear at an altitude of 33 degrees toward the southeast.
17104-1544 Visibility on May 17
17104-1544 is visible late in the evening before midnight
17104-1544 Rise and Set Timetable
| Time | Elevation | |
Moon Rise, 1.2% illuminated  | 03:25 | 24° |
| Moon Set | 18:42 | -9° |
| 17104-1544 rise | 19:28 | |
| Astrosession begin | 19:55 | 5° |
| 17104-1544 transit | 00:37 | 37° |
| Astrosession end | 02:12 | 32° |
| Twighlight end | 02:51 | 28° |
| Civil sunrise | 03:27 | 23° |
| Sunrise | 03:58 | 19° |
| 17104-1544 set | 05:47 |
Track 17104-1544 Position Throughout the Night
← Sun, 17 May 2026 →
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| Altitude | |
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Shift the map to change the time and observe 17104-1544 changing position in the night sky.
17104-1544 Star System Description
17104-1544 is 5-star Star System located in constellation Ophiuchus at coordinates RA: 17h 10m 22s", Dec: -15° 43' 30s.
The primary component has a magnitude of 3.05, while the secondary component has a magnitude of 3.27. They are separated by 0.4 arcseconds at a position angle of 274 degrees. The brightness difference between the two components is 0.22 magnitudes, with the primary component being approximately 1.2 times brighter than the secondary.
The primary and secondary stars are both white 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 3.05, while the secondary component has a magnitude of 3.27. They are separated by 0.4 arcseconds at a position angle of 274 degrees. The brightness difference between the two components is 0.22 magnitudes, with the primary component being approximately 1.2 times brighter than the secondary.
The primary and secondary stars are both white 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 17104-1544
| Property | Value |
|---|---|
| Star System Identifier | 17104-1544 |
| System Type | 5-star Star System |
| Primary Star | eta Oph |
| Right Ascension (RA) | 17.17294 (17h 10m 22s") |
| Declination (Dec) | -15.72514 (-15° 43' 30s) |
| Magnitude (Primary) | 3.05 |
| Magnitude (Secondary) | 3.27 |
| Spectral Type (Primary/Secondary) | A1IV+A1IV (white/white) |
| Separation (Arcseconds) | 0.4 |
| Position Angle | 274° |
| Discovery Year | 1889 |
| Last Observed | 2023 |
| Primary Proper Motion (Ra, Dec) | +045+064 |
| Secondary Proper Motion (Ra, Dec) | |
| Number of Observations | 252 |
17104-1544 Components
| Component | Magnitude | Separation (arcseconds) | Position Angle |
| AB | 3.27 | 0.4 | 274 |
| AB,C | 12.34 | 94.6 | 142 |
| AD | 11.2 | 99.8 | 289 |
| AE | 11.1 | 63.1 | 318 |
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 eta Oph
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| Object name | 17104-1544 |
| Field of view | |
| Limiting magnitude | |
| 17104-1544 coordinates | 17.17294, -15.72514 |
| Center coordinates | 17.17294, -15.72514 |
17104-1544 Passage Through Night
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Current position of 17104-1544
| Time | 02:03 |
| Latitude | 37.3541 |
| Longitude | -121.955 |
| 17104-1544 elevation | 33° |
| 17104-1544 Azimuth | 155° |
Here you can see the current position of the 17104-1544 on the map, as well as its positions for rise and set. This tool allows you to track the 17104-1544's movement throughout the night, providing you with accurate and up-to-date information.
Annual motion of 17104-1544
17104-1544 will be visible until September, 25, 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 | Mon, 18 May 2026 |
| Twighlight start | 19:51 |
| Twighlight end | 02:06 |
| Twighlight duration | 6h 14m |
| Rise | 19:24 |
| Set | 05:43 |
| Elevation at transit | 37° |
| Transit time | 00:33 |
| Equatorial coordinates | RA: 17h 10m 22s", Dec: -15° 43' 30s |
| Magnitude | 3 |
| Constellation | Ophiuchus |
The graph illustrates the annual visibility pattern of a 17104-1544, 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 17104-1544 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 17104-1544 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 17104-1544
Coordinates & Visibility
| Right Ascension | 17.17294° |
| Declination | -15.72514° |
| Magnitude | 3.05 |
| Constellation | Ophiuchus |
| Elevation | 33.2° |
| Azimuth | 155° |