Double Star 19138+3909 Observation Details
19138+3909 Daily Motion
19138+3909 will be visible until January, 3, 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.
19138+3909 Visibility Timetable on June 16
19138+3909 Rise and Set Timetable
| Time | Elevation | |
| 19138+3909 rise | 18:15 | |
| Sunset | 21:01 | 23° |
| Civil sunset | 21:35 | 29° |
| Astrosession begin | 23:05 | 44° |
| Moon Rise, 77.2% illuminated | 00:33 | 61° |
| 19138+3909 transit | 03:06 | 89° |
| Astrosession end | 03:59 | 80° |
| Civil sunrise | 05:29 | 62° |
| Sunrise | 06:04 | 56° |
| Moon Set | 11:08 | 6° |
| 19138+3909 set | 11:57 |
Track 19138+3909 Position Throughout the Night
← Mon, 16 June 2025 →
| Time | 02:17 |
| Altitude | 36° |
| Azimuth | -66° |
Shift the map to change the time and observe 19138+3909 changing position in the night sky.
19138+3909 Star System Description
19138+3909 is Triple Star System located in constellation Lyra at coordinates RA: 19h 13m 45s", Dec: 39° 08' 45s.
The primary component has a magnitude of 4.38, while the secondary component has a magnitude of 8.58. They are separated by 26 arcseconds at a position angle of 90 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.
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.
The primary component has a magnitude of 4.38, while the secondary component has a magnitude of 8.58. They are separated by 26 arcseconds at a position angle of 90 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.
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 19138+3909
| Property | Value |
|---|---|
| Star System Identifier | 19138+3909 |
| System Type | Triple Star System |
| Primary Star | eta Lyr |
| Right Ascension (RA) | 19.22928 (19h 13m 45s") |
| Declination (Dec) | 39.14597 (39° 08' 45s) |
| Magnitude (Primary) | 4.38 |
| Magnitude (Secondary) | 8.58 |
| Spectral Type (Primary/Secondary) | B2.5IV |
| Separation (Arcseconds) | 26.0 |
| Position Angle | 90° |
| Discovery Year | 1777 |
| Last Observed | 2017 |
| Primary Proper Motion (Ra, Dec) | -001-001 |
| Secondary Proper Motion (Ra, Dec) | +003+007 |
| Number of Observations | 74 |
19138+3909 Components
| Component | Magnitude | Separation (arcseconds) | Position Angle |
| AB | 8.58 | 26.0 | 90 |
| AC | 11.42 | 161.3 | 151 |
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 eta Lyr
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| Object name | 19138+3909 |
| Field of view | |
| Limiting magnitude | |
| 19138+3909 coordinates | 19.22928, 39.14597 |
| Center coordinates | 19.22928, 39.14597 |
19138+3909 Passage Through Night
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Current position of 19138+3909
| Time | 12:55 |
| Latitude | 39.9625 |
| Longitude | -83.0061 |
| 19138+3909 elevation | -5° |
| 19138+3909 Azimuth | 25° |
Here you can see the current position of the 19138+3909 on the map, as well as its positions for rise and set. This tool allows you to track the 19138+3909's movement throughout the night, providing you with accurate and up-to-date information.
Annual motion of 19138+3909
| Date | Mon, 16 June 2025 |
| Twighlight start | 23:01 |
| Twighlight end | 03:54 |
| Twighlight duration | 5h 54m |
| Rise | 18:15 |
| Set | 11:57 |
| Elevation at transit | 89° |
| Transit time | 03:06 |
| Equatorial coordinates | RA: 19h 13m 45s", Dec: 39° 08' 45s |
| Magnitude | 4 |
| Constellation | Lyra |
The graph illustrates the annual visibility pattern of a 19138+3909, 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 19138+3909 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 19138+3909 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.