04239+0928 Position and Visibility Tonight
Where is 04239+0928 right now?
04239+0928 is located in the constellation Taurus. It is currently above the horizon at an altitude of 55° toward the south-east, with an apparent magnitude of 5.8.
04239+0928 visibility on 2026-08-21
04239+0928 Visible from early morning until sunrise
04239+0928 rise and set timetable
| Time | Elevation | |
Moonrise, 49% illuminated  | 12:56 | -10° |
| Astronomical observing session begins | 19:27 | -36° |
| Moonset | 22:12 | -10° |
| 04239+0928 rise | 23:03 | |
| Astronomical observing session ends | 02:54 | 45° |
| Twilight end | 03:29 | 51° |
| Civil sunrise | 04:01 | 55° |
| Sunrise | 04:30 | 59° |
| 04239+0928 transit | 05:31 | 62° |
Track 04239+0928 Position Throughout the Night
← 21 August 2026 →
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Shift the map to change the time and observe 04239+0928 changing position in the night sky.
Star system description: 04239+0928
System 04239+0928 — double star system, is located in the constellation Taurus, at coordinates RA: 04h 23m 51s", Dec: 09° 27' 39s.
The primary and secondary magnitudes are 5.8 and 5.9. Their separation is 0.3 arcseconds, at position angle 24°. The magnitude difference is 0.1 magnitudes; the primary is approximately 1.1 times brighter.
Both components are white.
The following technical data come from the Washington Double Star Catalog.
The primary and secondary magnitudes are 5.8 and 5.9. Their separation is 0.3 arcseconds, at position angle 24°. The magnitude difference is 0.1 magnitudes; the primary is approximately 1.1 times brighter.
Both components are white.
The following technical data come from the Washington Double Star Catalog.
Technical details: 04239+0928
| Property | Value |
|---|---|
| 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) |
| Primary magnitude | 5.8 |
| Secondary magnitude | 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 |
Data source: Washington Double Star (WDS) Catalog. Maintained by the U.S. Naval Observatory; thanks to the WDS team.
Finder Chart for 66 Tau
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| Object name | 66 Tau |
| Field of view | |
| Limiting magnitude | |
| 66 Tau 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 | 04:02 |
| Latitude | 37.3541 |
| Longitude | -121.955 |
| Elevation | 55° |
| Azimuth | 137° |
Here you can see the current position of 04239+0928 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.
Annual motion of 04239+0928
04239+0928 will remain visible until April 7, when it moves too close to the Sun and temporarily disappears from the night sky.
| Date | Fri, 21 August 2026 |
| Twilight start | 19:23 |
| Twilight end | 02:48 |
| Twilight duration | 7h 25m |
| Rise | 23:03 |
| Set | 12:00 |
| Elevation at transit | 62° |
| Transit time | 05:31 |
| Equatorial coordinates | RA: 04h 23m 51s", Dec: 09° 27' 39s |
| Magnitude | 6 |
| Constellation | Taurus |
The graph illustrates the annual visibility pattern of 04239+0928, 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 view detailed visibility information in a table with exact rise, transit, and set times for each date.
You can also view detailed visibility information in a table with exact rise, transit, and set times for each date.
Astrometric and Physical Parameters of 04239+0928
Coordinates and Visibility
| Right Ascension | 4.39772° |
| Declination | 9.46097° |
| Magnitude | 5.8 |
| Constellation | Taurus |
| Elevation | 55° |
| Azimuth | 136.7° |