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Hydrus

Genitive: Hydri

Southern 243 sq° Hyi

Brightest star: Beta Hydri

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Mythology

A modern constellation by Keyser and de Houtman representing a small water snake, not to be confused with Hydra.

Observing Highlights

A southern constellation between the two Magellanic Clouds. Beta Hydri is one of the nearest Sun-like stars.

Main Stars

20
Beta Hyi

HIP 2021; Beta Hyi

2.80 mag G0V
Head of Hydrus

HIP 9236; Alpha Hyi

2.86 mag F0IV
Gamma Hyi

HIP 17678; Gamma Hyi

3.24 mag M1III
Delta Hyi

HIP 11001; Delta Hyi

4.09 mag A3V
Epsilon Hyi

HIP 12394; Epsilon Hyi

4.11 mag B9V
Eta Hyi

HIP 8928; Eta2 Hyi

4.69 mag G8.5III
Nu Hyi

HIP 13244; Nu Hyi

4.75 mag K3III
Zeta Hyi

HIP 12876; Zeta Hyi

4.84 mag A2IV-V
Kappa Hyi

HIP 11095; Kappa Hyi

5.01 mag K1III
Lambda Hyi

HIP 3781; Lambda Hyi

5.07 mag K5III
Mu Hyi

HIP 11757; Mu Hyi

5.28 mag G8III
Iota Hyi

HIP 15201; Iota Hyi

5.52 mag F4III
Theta Hyi

HIP 14131; Theta Hyi

5.53 mag 0.1″ B: 6.3 B3V+A0IV
Pi Hyi

HIP 10418; Pi Hyi

5.55 mag M1III
BN Hyi

HIP 14521

5.57 mag 15.2″ B: 7.7 F2II-III
Pi Hyi

HIP 10513; Pi Hyi

5.69 mag K2III
HIP 7921
5.71 mag K2-3III
HIP 6631
5.93 mag K5III
HIP 15968
5.96 mag F3-5IV
HIP 1706
5.97 mag K3III

Double Stars

5
BN Hyi

HIP 14521

5.57 mag 15.2″ B: 7.7 F2II-III
HIP 8983
6.06 mag 128.8″ B: 9.8 F0IV-V
Tau Hyi

HIP 7879; Tau1 Hyi

6.33 mag G6-8III
Tau Hyi

HIP 8366; Tau2 Hyi

6.06 mag F0IV
HIP 7271
6.11 mag K0III

Deep Sky Objects

13
Open Cluster (1)
NGC 1629
— mag
Globular Cluster (2)
NGC 1466
11.4 mag 2.3
NGC 643
13.0 mag
Galaxy (5)
NGC 1511
12.0 mag 3.3 Sab
NGC 813
— mag 1.3 S0-a
NGC 1473
— mag IB
NGC 802
— mag 0.7 S0-a
NGC 646
— mag
Unknown (5)
602 C
— mag
796 C
— mag
NGC 1557
— mag
IC 1708
— mag
IC 1717
— mag