04204+2721 Position and Visibility Tonight
Where is 04204+2721 right now?
04204+2721 is located in the constellation Taurus. It is currently below the horizon and is not visible from your location.
04204+2721 visibility on 2026-09-07
04204+2721 Visible from early morning until sunrise
04204+2721 rise and set timetable
| Time | Elevation | |
| Moonset | 14:56 | -22° |
| Astronomical observing session begins | 18:58 | -16° |
| 04204+2721 rise | 20:49 | |
Moonrise, 21% illuminated  | 23:21 | 27° |
| Astronomical observing session ends | 03:13 | 73° |
| Twilight end | 03:45 | 77° |
| Civil sunrise | 04:17 | 80° |
| 04204+2721 transit | 04:21 | 80° |
| Sunrise | 04:44 | 79° |
Track 04204+2721 Position Throughout the Night
← 7 September 2026 →
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Star system description: 04204+2721
System 04204+2721 — triple star system, is located in the constellation Taurus, at coordinates RA: 04h 20m 21s", Dec: 27° 21' 03s.
The primary and secondary magnitudes are 5.08 and 7.51. Their separation is 55.9 arcseconds, at position angle 242°. The magnitude difference is 2.43 magnitudes; the primary is approximately 9.4 times brighter.
The following technical data come from the Washington Double Star Catalog.
The primary and secondary magnitudes are 5.08 and 7.51. Their separation is 55.9 arcseconds, at position angle 242°. The magnitude difference is 2.43 magnitudes; the primary is approximately 9.4 times brighter.
The following technical data come from the Washington Double Star Catalog.
Technical details: 04204+2721
| Property | Value |
|---|---|
| System identifier | 04204+2721 |
| System type | triple star system |
| Primary star | phi Tau |
| Right ascension (RA) | 4.33922 (04h 20m 21s") |
| Declination (Dec) | 27.35094 (27° 21' 03s) |
| Primary magnitude | 5.08 |
| Secondary magnitude | 7.51 |
| Spectral type (primary/secondary) | K2III |
| Separation (arcseconds) | 55.9 |
| Position angle | 242° |
| Discovery year | 1832 |
| Last observed | 2017 |
| Primary proper motion (RA, Dec) | -029-078 |
| Secondary proper motion (RA, Dec) | -017-001 |
| Number of observations | 49 |
Components of 04204+2721
| Component | Magnitude | Separation (arcseconds) | Position angle |
| AB | 7.51 | 55.9 | 242 |
| AC | 12.27 | 120.0 | 30 |
Data source: Washington Double Star (WDS) Catalog. Maintained by the U.S. Naval Observatory; thanks to the WDS team.
Finder Chart for phi Tau
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| Object name | phi Tau |
| Field of view | |
| Limiting magnitude | |
| phi Tau coordinates | 4.33922, 27.35094 |
| Center coordinates | 4.33922, 27.35094 |
04204+2721 Passage Through Night
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Current position of 04204+2721
| Time | 17:48 |
| Latitude | 37.3541 |
| Longitude | -121.955 |
| Elevation | -22° |
| Azimuth | 20° |
Here you can see the current position of 04204+2721 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 04204+2721 Visible Throughout the Year?
04204+2721 will remain visible until April 16, when it moves too close to the Sun and temporarily disappears from the night sky.
| Date | Tue, 8 September 2026 |
| Twilight start | 18:56 |
| Twilight end | 03:12 |
| Twilight duration | 8h 16m |
| Rise | 20:45 |
| Set | 11:49 |
| Elevation at transit | 80° |
| Transit time | 04:17 |
| Equatorial coordinates | RA: 04h 20m 21s", Dec: 27° 21' 03s |
| Magnitude | 5 |
| Constellation | Taurus |
The graph illustrates the annual visibility pattern of 04204+2721, 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 04204+2721 is visible throughout the year in a table with exact rise, transit, and set times for each date.
You can also see when 04204+2721 is visible throughout the year in a table with exact rise, transit, and set times for each date.
Astrometric and Physical Parameters of 04204+2721
Coordinates and Visibility
| Right Ascension | 04h 20m 21s |
| Declination | 27° 21′ 03″ |
| Magnitude | 5.08 |
| Constellation | Taurus |
| Elevation | -22.3° |
| Azimuth | 20.5° |