20145+3648 Position and Visibility Tonight
Where is 20145+3648 right now?
20145+3648 is located in the constellation Cygnus. It is currently above the horizon at an altitude of 38° toward the north-west, with an apparent magnitude of 4.96.
Twilight begins at 23:21 local time. At that moment, 20145+3648 will be 38° above the horizon toward the north-west.
Twilight begins at 23:21 local time. At that moment, 20145+3648 will be 38° above the horizon toward the north-west.
20145+3648 visibility on 2026-09-27
20145+3648 Visible from sunset until early morning
20145+3648 rise and set timetable
| Time | Elevation | |
Moonrise, 99.8% illuminated  | 16:51 | 65° |
| Sunset | 16:57 | 66° |
| Civil sunset | 17:24 | 71° |
| Twilight start (−12°) | 17:54 | 77° |
| Astronomical observing session begins | 18:25 | 83° |
| 20145+3648 transit | 18:58 | 89° |
| 20145+3648 set | 03:16 | |
| Astronomical observing session ends | 03:33 | -2° |
| Moonset | 06:07 | -15° |
| 20145+3648 rise | 10:36 |
Track 20145+3648 position throughout the night
← 27 September 2026 →
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Star system description: 20145+3648
System 20145+3648 — 7-star system, is located in the constellation Cygnus, at coordinates RA: 20h 14m 31s", Dec: 36° 48' 22s.
The primary and secondary magnitudes are 4.96 and 6.71. Their separation is 3.5 arcminutes, at position angle 153°. The magnitude difference is 1.75 magnitudes; the primary is approximately 5 times brighter.
The following technical data come from the Washington Double Star Catalog.
Y: Different parallaxes indicate a non-physical pair.
The primary and secondary magnitudes are 4.96 and 6.71. Their separation is 3.5 arcminutes, at position angle 153°. The magnitude difference is 1.75 magnitudes; the primary is approximately 5 times brighter.
The following technical data come from the Washington Double Star Catalog.
Technical details: 20145+3648
| Property | Value |
|---|---|
| System identifier | 20145+3648 |
| System type | 7-star system |
| Primary star | 29 Cyg |
| Right ascension (RA) | 20.24219 (20h 14m 31s") |
| Declination (Dec) | 36.80614 (36° 48' 22s) |
| Primary magnitude | 4.96 |
| Secondary magnitude | 6.71 |
| Spectral type (primary/secondary) | A2V |
| Separation (arcseconds) | 212 |
| Position angle | 153° |
| Discovery year | 1887 |
| Last observed | 2016 |
| Primary proper motion (RA, Dec) | +070+069 |
| Secondary proper motion (RA, Dec) | +001-004 |
| Number of observations | 29 |
Components of 20145+3648
| Component | Magnitude | Separation (arcseconds) | Position angle |
| AB | 6.71 | 212 | 153 |
| AC | 9.99 | 225.2 | 23 |
| AE | 12.2 | 39.8 | 343 |
| AF | 12.5 | 45.2 | 38 |
| AH | 12 | 10 | 133 |
| BD | 10.72 | 216.5 | 120 |
Notes
Data source: Washington Double Star (WDS) Catalog. Maintained by the U.S. Naval Observatory; thanks to the WDS team.
Finder Chart for 20145+3648
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| Object name | 20145+3648 |
| Field of view | |
| Limiting magnitude | |
| 20145+3648 coordinates | 20.24219, 36.80614 |
| Center coordinates | 20.24219, 36.80614 |
20145+3648 Passage Through Night
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Current position of 20145+3648
| Time | 23:21 |
| Latitude | 37.3541 |
| Longitude | -121.955 |
| Elevation | 38° |
| Azimuth | 291° |
Here you can see the current position of 20145+3648 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.
When Is 20145+3648 Visible Throughout the Year?
20145+3648 will remain visible until January 12, when it moves too close to the Sun and temporarily disappears from the night sky.
| Date | Mon, 28 September 2026 |
| Astronomical observing session begins | 18:19 |
| Astronomical observing session ends | 03:27 |
| Astronomical observing duration | 9h 8m |
| Rise | 10:36 |
| Set | 03:12 |
| Elevation at transit | 89° |
| Transit time | 18:54 |
| Equatorial coordinates | RA: 20h 14m 31s", Dec: 36° 48' 22s |
| Magnitude | 5 |
| Constellation | Cygnus |
The graph illustrates the annual visibility pattern of 20145+3648, 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 see when 20145+3648 is visible throughout the year in a table with exact rise, transit, and set times for each date.
You can also see when 20145+3648 is visible throughout the year in a table with exact rise, transit, and set times for each date.
Astrometric and Physical Parameters of 20145+3648
Coordinates and Visibility
| Right Ascension | 20h 14m 32s |
| Declination | 36° 48′ 22″ |
| Magnitude | 4.96 |
| Constellation | Cygnus |
| Elevation | 38.5° |
| Azimuth | 290.9° |