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Sky-Tonight.com / Constellations / Hydrus
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Observation Settings

Or select it on the map:
This Earth map fragment is intended to illustrate celestial motion across the sky, emphasizing both bearing and elevational perspectives. The map's center point corresponds to the transit, showcasing celestial objects at their highest point, while elevation gradually decreases towards the map edges. This dynamic representation offers insights into the changing positions of celestial bodies with a focus on their bearing and elevational trajectories.
Your location: Columbus, United States
Timezone:
Latitude:
39.9625
Longitude:
-83.0061

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

TimeElevation
Hydrus is always below the horizon-
Moon Rise, 30.2% illuminated03:46-48°
Hydrus Transit12:06-22°
Moon Set16:54-33°
Astrosession begin21:57-54°
Astrosession end04:59-43°

Track Hydrus Position Throughout the Night

← Fri, 23 May 2025 →

Elevation (degrees)
Time01:57
Altitude-54°
Azimuth164°
Shift the map to change the time and observe Hydrus changing position in the night sky.

Annual motion of Hydrus

Time
DateSat, 24 May 2025
Twighlight start22:42
Twighlight end04:13
Twighlight duration6h 31m
RiseHydrus is always down
SetHydrus is always down
Elevation at transit-22°
Transit time12:02
Equatorial coordinatesRA: 02h 36m 42s", Dec: -72° 29' 30s
Magnitude-
Constellation
The graph illustrates the annual visibility pattern of a Hydrus, 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 Hydrus 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.

Acknowledgements

We gratefully acknowledge the International Astronomical Union (IAU) for defining and standardizing the official constellation boundaries, which provide a consistent framework for celestial mapping.

Special thanks to Sky & Telescope Magazine and contributors Roger Sinnott and Rick Fienberg for their collaboration in producing the charts and tables. The constellation patterns, drawn by Alan MacRobert, were influenced by the work of H. A. Rey and thoughtfully adjusted to align with earlier traditions.