Double Star 09291-0246 Observation Details
09291-0246 Daily Motion
09291-0246 will rise at 15:33, reaching 46° when twilight begins at 20:07. It will reach transit at 50° by 21:24 and will set before twilight ends at 03:14.09291-0246 will be visible until May, 29, 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.
09291-0246 Visibility Timetable on February 23
09291-0246 Rise and Set Timetable
| Time | Elevation | |
Moon Rise, 22.9% illuminated  | 07:21 | -45° |
| 09291-0246 rise | 15:33 | |
| Sunset | 15:53 | 4° |
| Civil sunset | 16:21 | 9° |
| Astrosession begin | 17:21 | 21° |
| 09291-0246 transit | 21:24 | 50° |
| Moon Set | 22:08 | 49° |
| 09291-0246 set | 03:14 | |
| Astrosession end | 03:19 | -1° |
Track 09291-0246 Position Throughout the Night
← Mon, 23 February 2026 →
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Shift the map to change the time and observe 09291-0246 changing position in the night sky.
Where is 09291-0246 right now?
09291-0246 is located in the constellation Hydra, at right ascension 09h 29m 08s" and declination -2° 46' 08s. At the current time, it is above the horizon at an altitude of 46 degrees toward the south-southwest from your location, with an apparent magnitude of 4.64.09291-0246 Star System Description
09291-0246 is Double Star System located in constellation Hydra at coordinates RA: 09h 29m 08s", Dec: -2° 46' 08s.
The primary component has a magnitude of 4.64, while the secondary component has a magnitude of 7.28. They are separated by 1 arcminute at a position angle of 359 degrees. The brightness difference between the two components is 2.64 magnitudes, with the primary component being approximately 11.4 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.
V: Proper motion or other technique indicates that this pair is physical.
The primary component has a magnitude of 4.64, while the secondary component has a magnitude of 7.28. They are separated by 1 arcminute at a position angle of 359 degrees. The brightness difference between the two components is 2.64 magnitudes, with the primary component being approximately 11.4 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 09291-0246
| Property | Value |
|---|---|
| Star System Identifier | 09291-0246 |
| System Type | Double Star System |
| Primary Star | tau 1 Hya |
| Right Ascension (RA) | 9.48578 (09h 29m 08s") |
| Declination (Dec) | -2.76894 (-2° 46' 08s) |
| Magnitude (Primary) | 4.64 |
| Magnitude (Secondary) | 7.28 |
| Spectral Type (Primary/Secondary) | F6V+K0 (yellow-white/orange) |
| Separation (Arcseconds) | 61.7 |
| Position Angle | 359° |
| Discovery Year | 1782 |
| Last Observed | 2016 |
| Primary Proper Motion (Ra, Dec) | +099-003 |
| Secondary Proper Motion (Ra, Dec) | +142-017 |
| Number of Observations | 47 |
Notes
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 tau 1 Hya
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| Object name | 09291-0246 |
| Field of view | |
| Limiting magnitude | |
| 09291-0246 coordinates | 9.48578, -2.76894 |
| Center coordinates | 9.48578, -2.76894 |
09291-0246 Passage Through Night
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Current position of 09291-0246
| Time | 20:07 |
| Latitude | 37.3541 |
| Longitude | -121.955 |
| 09291-0246 elevation | 46° |
| 09291-0246 Azimuth | -152° |
Here you can see the current position of the 09291-0246 on the map, as well as its positions for rise and set. This tool allows you to track the 09291-0246's movement throughout the night, providing you with accurate and up-to-date information.
Annual motion of 09291-0246
| Date | Tue, 24 February 2026 |
| Twighlight start | 17:22 |
| Twighlight end | 03:17 |
| Twighlight duration | 10h 55m |
| Rise | 15:29 |
| Set | 03:10 |
| Elevation at transit | 50° |
| Transit time | 21:20 |
| Equatorial coordinates | RA: 09h 29m 08s", Dec: -2° 46' 08s |
| Magnitude | 5 |
| Constellation | Hydra |
The graph illustrates the annual visibility pattern of a 09291-0246, 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 09291-0246 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.
You can also view detailed visibility information in a dedicated table, including exact rise, transit, and set times for each date.
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 09291-0246 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.
You can also view detailed visibility information in a dedicated table, including exact rise, transit, and set times for each date.
Astrometric & Physical Parameters of 09291-0246
Coordinates & Visibility
| Right Ascension | 9.48578° |
| Declination | -2.76894° |
| Magnitude | 4.64 |
| Constellation | Hydra |
| Elevation | 46.1° |
| Azimuth | -151.7° |