21446+2539 Position and Visibility Tonight
Where is 21446+2539 right now?
21446+2539 is located in the constellation Pegasus. Although 21446+2539 is currently 11° above the horizon, it is not visible because it is daytime.
Twilight begins at 18:57 local time. At that moment, 21446+2539 will be 37° above the horizon toward the east.
Twilight begins at 18:57 local time. At that moment, 21446+2539 will be 37° above the horizon toward the east.
21446+2539 visibility on 2026-08-18
21446+2539 Visible from sunset until sunrise
21446+2539 rise and set timetable
| Time | Elevation | |
Moonrise, 21% illuminated  | 09:49 | -24° |
| 21446+2539 rise | 15:40 | |
| Sunset | 17:55 | 25° |
| Civil sunset | 18:24 | 30° |
| Twilight start | 18:57 | 37° |
| Astronomical observing session begins | 19:32 | 44° |
| Moonset | 20:26 | 54° |
| 21446+2539 transit | 23:05 | 78° |
| Astronomical observing session ends | 02:51 | 41° |
| Twilight end | 03:26 | 34° |
| Civil sunrise | 03:59 | 28° |
| Sunrise | 04:28 | 22° |
| 21446+2539 set | 06:30 |
Track 21446+2539 Position Throughout the Night
← 18 August 2026 →
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Shift the map to change the time and observe 21446+2539 changing position in the night sky.
Star system description: 21446+2539
System 21446+2539 — triple star system, is located in the constellation Pegasus, at coordinates RA: 21h 44m 38s", Dec: 25° 38' 42s.
The primary and secondary magnitudes are 4.94 and 5.04. Their separation is 0.3 arcseconds, at position angle 138°. The magnitude difference is 0.1 magnitudes; the primary is approximately 1.1 times brighter.
The following technical data come from the Washington Double Star Catalog.
The primary and secondary magnitudes are 4.94 and 5.04. Their separation is 0.3 arcseconds, at position angle 138°. The magnitude difference is 0.1 magnitudes; the primary is approximately 1.1 times brighter.
The following technical data come from the Washington Double Star Catalog.
Technical details: 21446+2539
| Property | Value |
|---|---|
| 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) |
| Primary magnitude | 4.94 |
| Secondary magnitude | 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 |
Components of 21446+2539
| Component | Magnitude | Separation (arcseconds) | Position angle |
| AB | 5.04 | 0.3 | 138 |
| AB,C | 10.8 | 9.5 | 307 |
Data source: Washington Double Star (WDS) Catalog. Maintained by the U.S. Naval Observatory; thanks to the WDS team.
Finder Chart for kap Peg
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| Object name | kap Peg |
| Field of view | |
| Limiting magnitude | |
| kap Peg 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 | 05:33 |
| Latitude | 37.3541 |
| Longitude | -121.955 |
| Elevation | 11° |
| Azimuth | 294° |
Here you can see the current position of 21446+2539 on the map, as well as its positions for rise and set. This tool lets you track its movement throughout the night with accurate, up-to-date information.
Annual motion of 21446+2539
21446+2539 will remain visible until January 25, when it moves too close to the Sun and temporarily disappears from the night sky.
| Date | Tue, 18 August 2026 |
| Twilight start | 19:28 |
| Twilight end | 02:44 |
| Twilight duration | 7h 17m |
| Rise | 15:40 |
| Set | 06:30 |
| Elevation at transit | 78° |
| Transit time | 23:05 |
| Equatorial coordinates | RA: 21h 44m 38s", Dec: 25° 38' 42s |
| Magnitude | 5 |
| Constellation | Pegasus |
The graph illustrates the annual visibility pattern of 21446+2539, including its daily appearances and transit times. The vertical axis shows the hours of the day and the horizontal axis spans the year. The reddish area marks when the object is above the horizon, while the white line marks its daily transit.
You can also view detailed visibility information in a table with exact rise, transit, and set times for each date.
You can also view detailed visibility information in a table with exact rise, transit, and set times for each date.
Astrometric and Physical Parameters of 21446+2539
Coordinates and Visibility
| Right Ascension | 21.74408° |
| Declination | 25.645° |
| Magnitude | 4.94 |
| Constellation | Pegasus |
| Elevation | 10.7° |
| Azimuth | 294.2° |