20585+5028 Position and Visibility Tonight
Where is 20585+5028 right now?
20585+5028 is located in the constellation Cygnus. Although 20585+5028 is currently 18° above the horizon, it is not visible because it is daytime.
Twilight begins at 18:57 local time. At that moment, 20585+5028 will be 52° above the horizon toward the north-east.
Twilight begins at 18:57 local time. At that moment, 20585+5028 will be 52° above the horizon toward the north-east.
20585+5028 visibility on 2026-08-18
20585+5028 Visible from sunset until sunrise
20585+5028 rise and set timetable
| Time | Elevation | |
Moonrise, 21% illuminated  | 09:49 | -2° |
| 20585+5028 rise | 11:50 | |
| Sunset | 17:55 | 42° |
| Civil sunset | 18:24 | 47° |
| Twilight start | 18:57 | 52° |
| Astronomical observing session begins | 19:32 | 58° |
| Moonset | 20:26 | 66° |
| 20585+5028 transit | 22:19 | 77° |
| Astronomical observing session ends | 02:51 | 41° |
| Twilight end | 03:26 | 36° |
| Civil sunrise | 03:59 | 31° |
| Sunrise | 04:28 | 27° |
| 20585+5028 set | 08:48 |
Track 20585+5028 Position Throughout the Night
← 18 August 2026 →
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Star system description: 20585+5028
System 20585+5028 — quadruple star system, is located in the constellation Cygnus, at coordinates RA: 20h 58m 30s", Dec: 50° 27' 42s.
The primary and secondary magnitudes are 5.94 and 6.79. Their separation is 1.2 arcseconds, at position angle 44°. The magnitude difference is 0.85 magnitudes; the primary is approximately 2.2 times brighter.
The following technical data come from the Washington Double Star Catalog.
V: Proper motion indicates a physical pair.
The primary and secondary magnitudes are 5.94 and 6.79. Their separation is 1.2 arcseconds, at position angle 44°. The magnitude difference is 0.85 magnitudes; the primary is approximately 2.2 times brighter.
The following technical data come from the Washington Double Star Catalog.
Technical details: 20585+5028
| Property | Value |
|---|---|
| System identifier | 20585+5028 |
| System type | quadruple star system |
| Primary star | Cyg-20585 5028 |
| Right ascension (RA) | 20.975 (20h 58m 30s") |
| Declination (Dec) | 50.46178 (50° 27' 42s) |
| Primary magnitude | 5.94 |
| Secondary magnitude | 6.79 |
| Spectral type (primary/secondary) | B5Vn |
| Separation (arcseconds) | 1.2 |
| Position angle | 44° |
| Discovery year | 1783 |
| Last observed | 2023 |
| Primary proper motion (RA, Dec) | +005+003 |
| Secondary proper motion (RA, Dec) | +005+003 |
| Number of observations | 156 |
Components of 20585+5028
| Component | Magnitude | Separation (arcseconds) | Position angle |
| AB | 6.79 | 1.2 | 44 |
| AC | 11.77 | 139.4 | 356 |
| CD | 13.3 | 12.6 | 51 |
Notes
Data source: Washington Double Star (WDS) Catalog. Maintained by the U.S. Naval Observatory; thanks to the WDS team.
Finder Chart for
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| Object name | |
| Field of view | |
| Limiting magnitude | |
| coordinates | 20.975, 50.46178 |
| Center coordinates | 20.975, 50.46178 |
20585+5028 Passage Through Night
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Current position of 20585+5028
| Time | 05:33 |
| Latitude | 37.3541 |
| Longitude | -121.955 |
| Elevation | 18° |
| Azimuth | 320° |
Here you can see the current position of 20585+5028 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 20585+5028
20585+5028 will remain visible until January 28, 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 | 11:50 |
| Set | 08:48 |
| Elevation at transit | 77° |
| Transit time | 22:19 |
| Equatorial coordinates | RA: 20h 58m 30s", Dec: 50° 27' 42s |
| Magnitude | 6 |
| Constellation | Cygnus |
The graph illustrates the annual visibility pattern of 20585+5028, 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 20585+5028
Coordinates and Visibility
| Right Ascension | 20.975° |
| Declination | 50.46178° |
| Magnitude | 5.94 |
| Constellation | Cygnus |
| Elevation | 18.3° |
| Azimuth | 320.3° |