21441+2845 Position and Visibility Tonight
Where is 21441+2845 right now?
21441+2845 is located in the constellation Cygnus. Although 21441+2845 is currently 12° above the horizon, it is not visible because it is daytime.
Twilight begins at 18:57 local time. At that moment, 21441+2845 will be 38° above the horizon toward the east.
Twilight begins at 18:57 local time. At that moment, 21441+2845 will be 38° above the horizon toward the east.
21441+2845 visibility on 2026-08-18
21441+2845 Visible from sunset until sunrise
21441+2845 rise and set timetable
| Time | Elevation | |
Moonrise, 21% illuminated  | 09:49 | -21° |
| 21441+2845 rise | 15:27 | |
| Sunset | 17:55 | 26° |
| Civil sunset | 18:24 | 32° |
| Twilight start | 18:57 | 38° |
| Astronomical observing session begins | 19:32 | 45° |
| Moonset | 20:26 | 56° |
| 21441+2845 transit | 23:05 | 81° |
| Astronomical observing session ends | 02:51 | 42° |
| Twilight end | 03:26 | 36° |
| Civil sunrise | 03:59 | 29° |
| Sunrise | 04:28 | 24° |
| 21441+2845 set | 06:42 |
Track 21441+2845 Position Throughout the Night
← 18 August 2026 →
| Time | |
| Altitude | |
| Azimuth |
Shift the map to change the time and observe 21441+2845 changing position in the night sky.
Star system description: 21441+2845
System 21441+2845 — 9-star system, is located in the constellation Cygnus, at coordinates RA: 21h 44m 08s", Dec: 28° 44' 33s.
The primary and secondary magnitudes are 4.75 and 6.18. Their separation is 5.7 arcseconds, at position angle 113°. The magnitude difference is 1.43 magnitudes; the primary is approximately 3.7 times brighter.
The primary is yellow-white; the secondary is yellow.
The following technical data come from the Washington Double Star Catalog.
The primary and secondary magnitudes are 4.75 and 6.18. Their separation is 5.7 arcseconds, at position angle 113°. The magnitude difference is 1.43 magnitudes; the primary is approximately 3.7 times brighter.
The primary is yellow-white; the secondary is yellow.
The following technical data come from the Washington Double Star Catalog.
Technical details: 21441+2845
| Property | Value |
|---|---|
| System identifier | 21441+2845 |
| System type | 9-star system |
| Primary star | mu Cyg |
| Right ascension (RA) | 21.73569 (21h 44m 08s") |
| Declination (Dec) | 28.74261 (28° 44' 33s) |
| Primary magnitude | 4.75 |
| Secondary magnitude | 6.18 |
| Spectral type (primary/secondary) | F6V+G2V (yellow-white/yellow) |
| Separation (arcseconds) | 5.7 |
| Position angle | 113° |
| Discovery year | 1823 |
| Last observed | 2022 |
| Primary proper motion (RA, Dec) | +260-243 |
| Secondary proper motion (RA, Dec) | +260-243 |
| Number of observations | 735 |
Components of 21441+2845
| Component | Magnitude | Separation (arcseconds) | Position angle |
| AB | 6.18 | 5.7 | 113 |
| AC | 12.93 | 35.3 | 263 |
| AD | 6.94 | 216.5 | 62 |
| AF | 12.64 | 113.7 | 73 |
| AG | 13.77 | 170.3 | 73 |
| BD | 6.94 | 213.9 | 60 |
| DE | 13.13 | 14.3 | 270 |
| DG | 13.77 | 93.5 | 166 |
Data source: Washington Double Star (WDS) Catalog. Maintained by the U.S. Naval Observatory; thanks to the WDS team.
Finder Chart for mu Cyg
Double-click to unlock the map.
| Object name | mu Cyg |
| Field of view | |
| Limiting magnitude | |
| mu Cyg coordinates | 21.73569, 28.74261 |
| Center coordinates | 21.73569, 28.74261 |
21441+2845 Passage Through Night
Double-click to unlock the map.
Current position of 21441+2845
| Time | 05:33 |
| Latitude | 37.3541 |
| Longitude | -121.955 |
| Elevation | 12° |
| Azimuth | 297° |
Here you can see the current position of 21441+2845 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 21441+2845
21441+2845 will remain visible until January 26, 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 | 15:27 |
| Set | 06:42 |
| Elevation at transit | 81° |
| Transit time | 23:05 |
| Equatorial coordinates | RA: 21h 44m 08s", Dec: 28° 44' 33s |
| Magnitude | 5 |
| Constellation | Cygnus |
The graph illustrates the annual visibility pattern of 21441+2845, 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 21441+2845
Coordinates and Visibility
| Right Ascension | 21.73569° |
| Declination | 28.74261° |
| Magnitude | 4.75 |
| Constellation | Cygnus |
| Elevation | 12.4° |
| Azimuth | 296.8° |