Double Star 20155+4743 Observation Details
20155+4743 Daily Motion
20155+4743 will reach its transit before twilight, at 17:00. By the onset of twilight at 17:13, it will be at elevation, and it will set before sunrise, at 02:47.20155+4743 will be visible until January, 18, 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.
20155+4743 Visibility Timetable on October 27
20155+4743 Rise and Set Timetable
| Time | Elevation | |
| Moon Rise, 23.5% illuminated | 10:29 | 22° |
| Sunset | 16:14 | 77° |
| Civil sunset | 16:42 | 79° |
| 20155+4743 transit | 17:00 | 80° |
| Astrosession begin | 17:43 | 77° |
| Moon Set | 19:34 | 60° |
| 20155+4743 set | 02:47 | |
| Astrosession end | 04:00 | -4° |
| 20155+4743 rise | 07:09 |
Track 20155+4743 Position Throughout the Night
← Mon, 27 October 2025 →
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Shift the map to change the time and observe 20155+4743 changing position in the night sky.
Where is 20155+4743 right now?
20155+4743 is located in the constellation Cygnus, at right ascension 20h 15m 28s" and declination 47° 42' 51s. Although it is currently above the horizon at an altitude of 69 degrees, 20155+4743 is not visible because it is daytime.20155+4743 Star System Description
20155+4743 is Double Star System located in constellation Cygnus at coordinates RA: 20h 15m 28s", Dec: 47° 42' 51s.
The primary component has a magnitude of 4.16, while the secondary component has a magnitude of 8.36. They are separated by 3.5 arcminutes at a position angle of 175 degrees. The brightness difference between the two components is 4.2 magnitudes, with the primary component being approximately 47.9 times brighter than the secondary.
The primary star is orange in color, and the secondary star is blue-white.
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.
S: Statistically different parallax and proper motion indicates that this pair is non-physical.
The primary component has a magnitude of 4.16, while the secondary component has a magnitude of 8.36. They are separated by 3.5 arcminutes at a position angle of 175 degrees. The brightness difference between the two components is 4.2 magnitudes, with the primary component being approximately 47.9 times brighter than the secondary.
The primary star is orange in color, and the secondary star is blue-white.
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 20155+4743
| Property | Value |
|---|---|
| Star System Identifier | 20155+4743 |
| System Type | Double Star System |
| Primary Star | 32 Cyg |
| Right Ascension (RA) | 20.25786 (20h 15m 28s") |
| Declination (Dec) | 47.71422 (47° 42' 51s) |
| Magnitude (Primary) | 4.16 |
| Magnitude (Secondary) | 8.36 |
| Spectral Type (Primary/Secondary) | K7Ib+B6V (orange/blue-white) |
| Separation (Arcseconds) | 208.9 |
| Position Angle | 175° |
| Discovery Year | 1824 |
| Last Observed | 2015 |
| Primary Proper Motion (Ra, Dec) | +000-002 |
| Secondary Proper Motion (Ra, Dec) | +004+005 |
| Number of Observations | 13 |
Notes
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 32 Cyg
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| Object name | 20155+4743 |
| Field of view | |
| Limiting magnitude | |
| 20155+4743 coordinates | 20.25786, 47.71422 |
| Center coordinates | 20.25786, 47.71422 |
20155+4743 Passage Through Night
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Current position of 20155+4743
| Time | 15:19 |
| Latitude | 37.3541 |
| Longitude | -121.955 |
| 20155+4743 elevation | 69° |
| 20155+4743 Azimuth | -53° |
Here you can see the current position of the 20155+4743 on the map, as well as its positions for rise and set. This tool allows you to track the 20155+4743's movement throughout the night, providing you with accurate and up-to-date information.
Annual motion of 20155+4743
| Date | Tue, 28 October 2025 |
| Twighlight start | 17:42 |
| Twighlight end | 03:58 |
| Twighlight duration | 10h 16m |
| Rise | 07:09 |
| Set | 02:43 |
| Elevation at transit | 80° |
| Transit time | 16:56 |
| Equatorial coordinates | RA: 20h 15m 28s", Dec: 47° 42' 51s |
| Magnitude | 4 |
| Constellation | Cygnus |
The graph illustrates the annual visibility pattern of a 20155+4743, 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 20155+4743 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.
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 20155+4743 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.
Astrometric & Physical Parameters of 20155+4743
Coordinates & Visibility
| Right Ascension | 20.25786° |
| Declination | 47.71422° |
| Magnitude | 4.16 |
| Constellation | Cygnus |
| Elevation | 68.9° |
| Azimuth | -52.6° |