Double Star 15038+4739 Observation Details
15038+4739 Daily Motion
15038+4739 will be visible until November, 1, 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.
15038+4739 Visibility Timetable on October 27
15038+4739 Rise and Set Timetable
| Time | Elevation | |
| Moon Rise, 23.5% illuminated | 10:29 | 72° |
| 15038+4739 transit | 11:49 | 80° |
| Sunset | 16:14 | 41° |
| Civil sunset | 16:42 | 37° |
| Astrosession begin | 17:43 | 27° |
| Moon Set | 19:34 | 12° |
| 15038+4739 set | 21:35 | |
| 15038+4739 rise | 01:59 | |
| Astrosession end | 04:00 | 12° |
| Civil sunrise | 05:01 | 20° |
| Sunrise | 05:29 | 24° |
Track 15038+4739 Position Throughout the Night
← Mon, 27 October 2025 →
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Shift the map to change the time and observe 15038+4739 changing position in the night sky.
Where is 15038+4739 right now?
15038+4739 is located in the constellation Bootes, at right ascension 15h 03m 47s" and declination 47° 39' 14s. Although it is currently above the horizon at an altitude of 50 degrees, 15038+4739 is not visible because it is daytime.15038+4739 Star System Description
15038+4739 is Double Star System located in constellation Bootes at coordinates RA: 15h 03m 47s", Dec: 47° 39' 14s.
The primary component has a magnitude of 5.20, while the secondary component has a magnitude of 6.10. They are separated by 1.5 arcseconds at a position angle of 228 degrees. The brightness difference between the two components is 0.9 magnitudes, with the primary component being approximately 2.3 times brighter than the secondary.
The primary star is yellow-white in color, and the secondary star is orange.
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 5.20, while the secondary component has a magnitude of 6.10. They are separated by 1.5 arcseconds at a position angle of 228 degrees. The brightness difference between the two components is 0.9 magnitudes, with the primary component being approximately 2.3 times brighter than the secondary.
The primary star is yellow-white in color, and the secondary star is orange.
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 15038+4739
| Property | Value |
|---|---|
| Star System Identifier | 15038+4739 |
| System Type | Double Star System |
| Primary Star | 44 Boo |
| Right Ascension (RA) | 15.06314 (15h 03m 47s") |
| Declination (Dec) | 47.65406 (47° 39' 14s) |
| Magnitude (Primary) | 5.20 |
| Magnitude (Secondary) | 6.10 |
| Spectral Type (Primary/Secondary) | F7V+K4V (yellow-white/orange) |
| Separation (Arcseconds) | 1.5 |
| Position Angle | 228° |
| Discovery Year | 1819 |
| Last Observed | 2022 |
| Primary Proper Motion (Ra, Dec) | -444+010 |
| Secondary Proper Motion (Ra, Dec) | -374+039 |
| Number of Observations | 863 |
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 44 Boo
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| Object name | 15038+4739 |
| Field of view | |
| Limiting magnitude | |
| 15038+4739 coordinates | 15.06314, 47.65406 |
| Center coordinates | 15.06314, 47.65406 |
15038+4739 Passage Through Night
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Current position of 15038+4739
| Time | 15:24 |
| Latitude | 37.3541 |
| Longitude | -121.955 |
| 15038+4739 elevation | 50° |
| 15038+4739 Azimuth | 58° |
Here you can see the current position of the 15038+4739 on the map, as well as its positions for rise and set. This tool allows you to track the 15038+4739's movement throughout the night, providing you with accurate and up-to-date information.
Annual motion of 15038+4739
| Date | Tue, 28 October 2025 |
| Twighlight start | 17:42 |
| Twighlight end | 03:58 |
| Twighlight duration | 10h 16m |
| Rise | 01:59 |
| Set | 21:31 |
| Elevation at transit | 80° |
| Transit time | 11:45 |
| Equatorial coordinates | RA: 15h 03m 47s", Dec: 47° 39' 14s |
| Magnitude | 5 |
| Constellation | Bootes |
The graph illustrates the annual visibility pattern of a 15038+4739, 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 15038+4739 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 15038+4739 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 15038+4739
Coordinates & Visibility
| Right Ascension | 15.06314° |
| Declination | 47.65406° |
| Magnitude | 5.20 |
| Constellation | Bootes |
| Elevation | 49.8° |
| Azimuth | 57.5° |