Hydrus Constellation
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Hydrus, the water snake, is a southern constellation that represents a small snake in the water, known for containing the bright star Beta Hydri.
Hydrus Rise and Set Timetable
| Time | Elevation | |
| Hydrus is always below the horizon | - | |
Moonrise, 31.2% illuminated  | 23:22 | -25° |
| Moonset | 14:56 | -55° |
| Astronomical observing session begins | 18:26 | -45° |
| Hydrus transit | 02:38 | -20° |
| Astronomical observing session ends | 03:45 | -20° |
Track Hydrus Position Throughout the Night
← 7 September 2026 →
| Time | |
| Altitude | |
| Azimuth |
Shift the map to change the time and observe Hydrus changing position in the night sky.
Nebulae in the constellation Hydrus
Annual motion of Hydrus
| Date | Mon, 7 September 2026 |
| Twilight start | 18:54 |
| Twilight end | 03:07 |
| Twilight duration | 8h 13m |
| Rise | Hydrus is always down |
| Set | Hydrus is always down |
| Elevation at transit | -20° |
| Transit time | 02:38 |
| Equatorial coordinates | RA: 02h 36m 42s", Dec: -72° 29' 30s |
| Magnitude | - |
| Constellation |
The graph illustrates the constellation’s annual visibility pattern and its daily rise, set, and transit times throughout the year.
The vertical axis shows the hours of the day, while the horizontal axis spans the days of the year.
The reddish area marks when the constellation is above the horizon. The white line shows when it reaches its highest point in the sky. View detailed visibility information in a table with rise, transit, and set times for each date.
The vertical axis shows the hours of the day, while the horizontal axis spans the days of the year.
The reddish area marks when the constellation is above the horizon. The white line shows when it reaches its highest point in the sky. View detailed visibility information in a table with rise, transit, and set times for each date.
Acknowledgements
We gratefully acknowledge the International Astronomical Union (IAU) for defining and standardizing the official constellation boundaries used in celestial mapping.
Special thanks to Sky & Telescope Magazine and contributors Roger Sinnott and Rick Fienberg for producing the charts and tables. Alan MacRobert’s constellation patterns were influenced by the work of H. A. Rey and adjusted to align with earlier traditions.