Double Star 21446+2539 Position and Visibility Tonight
Where is 21446+2539 right now?
21446+2539 is located in the constellation Pegasus. At the current time, it is above the horizon at an altitude of 49 degrees toward the west from your location, with an apparent magnitude of 4.94.
Twilight begins at 02:06 local time, and at that moment, 21446+2539 will appear at an altitude of 49 degrees toward the west.
Twilight begins at 02:06 local time, and at that moment, 21446+2539 will appear at an altitude of 49 degrees toward the west.
21446+2539 Visibility on May 17
21446+2539 Not Visible Tonight
21446+2539 Rise and Set Timetable
| Time | Elevation | |
Moon Rise, 1.2% illuminated  | 03:25 | 64° |
| Moon Set | 18:42 | -24° |
| Astrosession begin | 19:55 | -16° |
| 21446+2539 rise | 21:46 | |
| Astrosession end | 02:12 | 50° |
| Twighlight end | 02:51 | 58° |
| Civil sunrise | 03:27 | 65° |
| Sunrise | 03:58 | 71° |
| 21446+2539 transit | 05:11 | 78° |
Track 21446+2539 Position Throughout the Night
← Sun, 17 May 2026 →
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21446+2539 Star System Description
21446+2539 is Triple Star System located in constellation Pegasus at coordinates RA: 21h 44m 38s", Dec: 25° 38' 42s.
The primary component has a magnitude of 4.94, while the secondary component has a magnitude of 5.04. They are separated by 0.3 arcseconds at a position angle of 138 degrees. The brightness difference between the two components is 0.1 magnitudes, with the primary component being approximately 1.1 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 4.94, while the secondary component has a magnitude of 5.04. They are separated by 0.3 arcseconds at a position angle of 138 degrees. The brightness difference between the two components is 0.1 magnitudes, with the primary component being approximately 1.1 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 21446+2539
| Property | Value |
|---|---|
| Star System Identifier | 21446+2539 |
| System Type | Triple Star System |
| Primary Star | kap Peg |
| Right Ascension (RA) | 21.74408 (21h 44m 38s") |
| Declination (Dec) | 25.645 (25° 38' 42s) |
| Magnitude (Primary) | 4.94 |
| Magnitude (Secondary) | 5.04 |
| Spectral Type (Primary/Secondary) | F5V |
| Separation (Arcseconds) | 0.3 |
| Position Angle | 138° |
| Discovery Year | 1880 |
| Last Observed | 2019 |
| Primary Proper Motion (Ra, Dec) | +048+014 |
| Secondary Proper Motion (Ra, Dec) | |
| Number of Observations | 450 |
21446+2539 Components
| Component | Magnitude | Separation (arcseconds) | Position Angle |
| AB | 5.04 | 0.3 | 138 |
| AB,C | 10.8 | 9.5 | 307 |
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 kap Peg
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| Object name | 21446+2539 |
| Field of view | |
| Limiting magnitude | |
| 21446+2539 coordinates | 21.74408, 25.645 |
| Center coordinates | 21.74408, 25.645 |
21446+2539 Passage Through Night
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Current position of 21446+2539
| Time | 02:06 |
| Latitude | 37.3541 |
| Longitude | -121.955 |
| 21446+2539 elevation | 49° |
| 21446+2539 Azimuth | -93° |
Here you can see the current position of the 21446+2539 on the map, as well as its positions for rise and set. This tool allows you to track the 21446+2539's movement throughout the night, providing you with accurate and up-to-date information.
Annual motion of 21446+2539
21446+2539 will be visible until January, 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 | 21:42 |
| Set | 12:32 |
| Elevation at transit | 78° |
| Transit time | 05:07 |
| Equatorial coordinates | RA: 21h 44m 38s", Dec: 25° 38' 42s |
| Magnitude | 5 |
| Constellation | Pegasus |
The graph illustrates the annual visibility pattern of a 21446+2539, 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 21446+2539 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 21446+2539 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 21446+2539
Coordinates & Visibility
| Right Ascension | 21.74408° |
| Declination | 25.645° |
| Magnitude | 4.94 |
| Constellation | Pegasus |
| Elevation | 49.2° |
| Azimuth | -92.9° |