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Hydrus (The Male Water Snake)

Hydrus (pronounced ˈhaɪdrəs) is the Latin name of a constellation situated south of the celestial equator. As such, it is more easily visible from the southern hemisphere.

In English language this constellation is also known as "The Male water snake" while in astronomical texts and literature this constellation is often abbreviated as "Hyi" (according to the standard of the International Astronomical Union - IAU) or as "Hydi" (according to a naming convention used by NASA).

The Latin genitive of the constellation name is "Hydri" (pronounced ˈhaɪdraɪ) and it is used to identify some of the brightest stars in this constellation based on the Bayer or Flamsteed star naming convention. For instance: α Hydri (the brightest star of Hydrus based on the Bayer catalog); or 23 Hydri (the 23th star in the constellation of Hydrus based on the Flamsteed catalog).

Hydrus is below the horizon from Greenwich, United Kingdom [change].
Available Resources for Hydrus

Sky chart of Hydrus from your location

Here we provide a simplified sky chart of the Hydrus constellation. Alternatively it is possible to locate Hydrus in the night sky using our Online Interactive Planetarium.

Chart of  constellation
This constellation image is derivatve work based on original work by IAU and Sky & Telescope magazine (Roger Sinnott & Rick Fienberg) CC-BY-3.0.

Visibility of Hydrus from your location

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Hydrus is currently not visible from Greenwich, United Kingdom [change]

The rise and set times provided here are just directional indications and they refer to a point approximately placed at the center of the constellation. In case of very large constellations these times can have little relevance.

Top bright stars in Hydrus

The table below lists the top 20 brightest stars in the Hydrus constellation. See also the complete list of 33 stars brighter than magnitude 6.5 (approximate) in the constellation of Hydrus. Click on each star to see more details about it.

HR Number(*) Star designation Proper name Visual magnitude Color Notes
HR98 β Hydri 2.8 Variable;
HR591 α Hydri 2.86
HR1208 γ Hydri 3.24
HR705 δ Hydri 4.09
HR806 ε Hydri 4.11
HR570 η2 Hydri 4.69
HR872 ν Hydri 4.75
HR837 ζ Hydri 4.84
HR715 κ Hydri 5.01
HR236 λ Hydri 5.07
HR776 μ Hydri 5.28
HR1025 ι Hydri 5.52
HR939 θ Hydri 5.53 Double;
HR667 π1 Hydri 5.55 Variable;
HR981 5.57 Variable; Double;
HR678 π2 Hydri 5.69
HR505 5.71
HR420 5.93
HR1064 5.96
HR87 5.97
...go to the complete list of 33 bright stars in the constellation of Hydrus

(*) HR stands for Harvard Revised Bright Star Catalogue, which is also known as the Yale Catalogue of Bright Stars.

Top deep sky objects in Hydrus

The table below lists all the deep sky objects in the Hydrus constellation. See also the complete list of 20 deep sky objects in the constellation of Hydrus. The list includes objects from the Messier, New General Catalogue (NGC) and Index Catalogue (IC).

Name Type Magnitude
NGC 1466 Globular Cluster 11.59 (V)
NGC 1511 Galaxy 11.97 (B)
NGC 1629 Globular Cluster 12.68 (V)
NGC 602 Open Cluster 13.02 (V)
NGC 1473 Galaxy 13.76 (B)
NGC 813 Galaxy 13.84 (B)
NGC 802 Galaxy 14.17 (B)
NGC 646 NED01 Galaxy 14.24 (B)
NGC 1511A Galaxy 14.27 (B)
IC 1708 Open Cluster 14.3 (B)
NGC 646 Galaxy Pair 14.37 (B)
NGC 643B Galaxy 14.61 (B)
NGC 1511B Galaxy 15.17 (B)
NGC 646 NED02 Galaxy 15.65 (B)
NGC 643C Galaxy 15.7 (B)
NGC 1557 Open Cluster N/A
NGC 643A Open Cluster N/A
NGC 796 Open Cluster N/A
NGC 643 Open Cluster N/A