Double Star 04239+0928 Observation Details
04239+0928 Daily Motion
04239+0928 will be visible until April, 6, 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.
04239+0928 Visibility Timetable on October 06
04239+0928 Rise and Set Timetable
| Time | Elevation | |
| Moon Rise, 98.2% illuminated | 15:57 | -39° |
| Astrosession begin | 18:10 | -21° |
| 04239+0928 rise | 20:01 | |
| 04239+0928 transit | 02:30 | 62° |
| Astrosession end | 03:41 | 58° |
| Moon Set | 04:33 | 50° |
| Civil sunrise | 04:41 | 49° |
| Sunrise | 05:09 | 45° |
| 04239+0928 set | 08:58 |
Track 04239+0928 Position Throughout the Night
← Mon, 6 October 2025 →
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Shift the map to change the time and observe 04239+0928 changing position in the night sky.
Where is 04239+0928 right now?
04239+0928 is located in the constellation Taurus, at right ascension 04h 23m 51s" and declination 09° 27' 39s. At the current time, it is above the horizon at an altitude of 60 degrees toward the south-southeast from your location, with an apparent magnitude of 5.8.04239+0928 Star System Description
04239+0928 is Double Star System located in constellation Taurus at coordinates RA: 04h 23m 51s", Dec: 09° 27' 39s.
The primary component has a magnitude of 5.8, while the secondary component has a magnitude of 5.9. They are separated by 0.3 arcseconds at a position angle of 24 degrees. The brightness difference between the two components is 0.1 magnitudes, with the primary component being approximately 1.1 times brighter than the secondary.
The primary and secondary stars are both white in color
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 5.8, while the secondary component has a magnitude of 5.9. They are separated by 0.3 arcseconds at a position angle of 24 degrees. The brightness difference between the two components is 0.1 magnitudes, with the primary component being approximately 1.1 times brighter than the secondary.
The primary and secondary stars are both white in color
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 04239+0928
| Property | Value |
|---|---|
| Star System Identifier | 04239+0928 |
| System Type | Double Star System |
| Primary Star | 66 Tau |
| Right Ascension (RA) | 4.39772 (04h 23m 51s") |
| Declination (Dec) | 9.46097 (09° 27' 39s) |
| Magnitude (Primary) | 5.8 |
| Magnitude (Secondary) | 5.9 |
| Spectral Type (Primary/Secondary) | A0V+A1V (white/white) |
| Separation (Arcseconds) | 0.3 |
| Position Angle | 24° |
| Discovery Year | 1901 |
| Last Observed | 2018 |
| Primary Proper Motion (Ra, Dec) | -024-005 |
| Secondary Proper Motion (Ra, Dec) | |
| Number of Observations | 147 |
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 66 Tau
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| Object name | 04239+0928 |
| Field of view | |
| Limiting magnitude | |
| 04239+0928 coordinates | 4.39772, 9.46097 |
| Center coordinates | 4.39772, 9.46097 |
04239+0928 Passage Through Night
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Current position of 04239+0928
| Time | 03:19 |
| Latitude | 37.3541 |
| Longitude | -121.955 |
| 04239+0928 elevation | 60° |
| 04239+0928 Azimuth | 155° |
Here you can see the current position of the 04239+0928 on the map, as well as its positions for rise and set. This tool allows you to track the 04239+0928's movement throughout the night, providing you with accurate and up-to-date information.
Annual motion of 04239+0928
| Date | Tue, 7 October 2025 |
| Twighlight start | 18:05 |
| Twighlight end | 03:35 |
| Twighlight duration | 10h 31m |
| Rise | 19:58 |
| Set | 08:54 |
| Elevation at transit | 62° |
| Transit time | 02:26 |
| Equatorial coordinates | RA: 04h 23m 51s", Dec: 09° 27' 39s |
| Magnitude | 6 |
| Constellation | Taurus |
The graph illustrates the annual visibility pattern of a 04239+0928, 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 04239+0928 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 04239+0928 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 04239+0928
Coordinates & Visibility
| Right Ascension | 4.39772° |
| Declination | 9.46097° |
| Magnitude | 5.8 |
| Constellation | Taurus |
| Elevation | 60° |
| Azimuth | 155.2° |