Double Star 16240+6131 Position and Visibility Tonight
Where is 16240+6131 right now?
16240+6131 is located in the constellation Draco. Although it is currently above the horizon at an altitude of 43 degrees, 16240+6131 is not visible because it is daytime.
Twilight begins at 18:52 local time, and at that moment, 16240+6131 will appear at an altitude of 29 degrees toward the northwest.
Twilight begins at 18:52 local time, and at that moment, 16240+6131 will appear at an altitude of 29 degrees toward the northwest.
16240+6131 Visibility on April 25
16240+6131 is Not visible tonight
16240+6131 Rise and Set Timetable
| Time | Elevation | |
| 16240+6131 is always above the horizon | ||
Moon Rise, 48.9% illuminated  | 11:04 | 13° |
| Sunset | 17:50 | 23° |
| Civil sunset | 18:18 | 26° |
| Twighlight start | 18:52 | 29° |
| Astrosession begin | 19:27 | 33° |
| 16240+6131 is always above the horizon | ||
| 16240+6131 transit | 01:18 | 66° |
| Moon Set | 01:21 | 66° |
| Astrosession end | 02:44 | 62° |
| Twighlight end | 03:19 | 59° |
| Civil sunrise | 03:52 | 56° |
| Sunrise | 04:21 | 53° |
Track 16240+6131 Position Throughout the Night
← Sat, 25 April 2026 →
| Time | |
| Altitude | |
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Shift the map to change the time and observe 16240+6131 changing position in the night sky.
16240+6131 Star System Description
16240+6131 is 5-star Star System located in constellation Draco at coordinates RA: 16h 23m 59s", Dec: 61° 30' 50s.
The primary component has a magnitude of 2.80, while the secondary component has a magnitude of 8.2. They are separated by 4.4 arcseconds at a position angle of 150 degrees. The brightness difference between the two components is 5.4 magnitudes, with the primary component being approximately 144.5 times brighter than the secondary.
The primary star is yellow 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.
The primary component has a magnitude of 2.80, while the secondary component has a magnitude of 8.2. They are separated by 4.4 arcseconds at a position angle of 150 degrees. The brightness difference between the two components is 5.4 magnitudes, with the primary component being approximately 144.5 times brighter than the secondary.
The primary star is yellow 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 16240+6131
| Property | Value |
|---|---|
| Star System Identifier | 16240+6131 |
| System Type | 5-star Star System |
| Primary Star | eta Dra |
| Right Ascension (RA) | 16.39986 (16h 23m 59s") |
| Declination (Dec) | 61.51408 (61° 30' 50s) |
| Magnitude (Primary) | 2.80 |
| Magnitude (Secondary) | 8.2 |
| Spectral Type (Primary/Secondary) | G8III+K1V (yellow/orange) |
| Separation (Arcseconds) | 4.4 |
| Position Angle | 150° |
| Discovery Year | 1843 |
| Last Observed | 2016 |
| Primary Proper Motion (Ra, Dec) | -016+057 |
| Secondary Proper Motion (Ra, Dec) | -028+069 |
| Number of Observations | 77 |
16240+6131 Components
| Component | Magnitude | Separation (arcseconds) | Position Angle |
| AB | 8.2 | 4.4 | 150 |
| AB,C | 8.10 | 565.0 | 245 |
| AD | 13.81 | 107.0 | 84 |
| AF | 11.64 | 190.0 | 31 |
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 Dra
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| Object name | 16240+6131 |
| Field of view | |
| Limiting magnitude | |
| 16240+6131 coordinates | 16.39986, 61.51408 |
| Center coordinates | 16.39986, 61.51408 |
16240+6131 Passage Through Night
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Current position of 16240+6131
| Time | 05:45 |
| Latitude | 37.3541 |
| Longitude | -121.955 |
| 16240+6131 elevation | 43° |
| 16240+6131 Azimuth | 37° |
Here you can see the current position of the 16240+6131 on the map, as well as its positions for rise and set. This tool allows you to track the 16240+6131's movement throughout the night, providing you with accurate and up-to-date information.
Annual motion of 16240+6131
16240+6131 will be visible throughout the entire year. However, it will change its position significantly, moving 57 degrees over time. You can find the best times to observe 16240+6131, when it reaches its highest elevation, in the annual motion section.
| Date | Sat, 25 April 2026 |
| Twighlight start | 19:22 |
| Twighlight end | 02:39 |
| Twighlight duration | 7h 17m |
| Rise | 16240+6131 is always up |
| Set | 16240+6131 is always up |
| Elevation at transit | 66° |
| Transit time | 01:18 |
| Equatorial coordinates | RA: 16h 23m 59s", Dec: 61° 30' 50s |
| Magnitude | 3 |
| Constellation | Draco |
The graph illustrates the annual visibility pattern of a 16240+6131, 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 16240+6131 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 16240+6131 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 16240+6131
Coordinates & Visibility
| Right Ascension | 16.39986° |
| Declination | 61.51408° |
| Magnitude | 2.80 |
| Constellation | Draco |
| Elevation | 43.5° |
| Azimuth | 36.9° |