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List of stars in Hydrus

Last updated December 30, 2025

This is the list of notable stars in the constellation Hydrus, sorted by decreasing brightness.

Name

B

Var

HD

HIP

RA

Dec

vis.
mag.

abs.
mag.

Dist. (ly)

Sp. class

Notes

β Hyi

β

2151

2021

00^h 25^m 39.20^s

−77° 15′ 18.1″

2.79

3.45

24

G2IV

suspected variable, V_max = 2.75^m, V_min = 2.81^m

α Hyi

α

12311

9236

01^h 58^m 45.87^s

−61° 34′ 11.7″

2.86

1.16

71

F0V

Head of Hydrus

γ Hyi

γ

24512

17678

03^h 47^m 14.23^s

−74° 14′ 21.3″

3.26

−0.83

214

M2III

Foo Pih; semiregular variable

δ Hyi

δ

15008

11001

02^h 21^m 45.02^s

−68° 39′ 33.9″

4.08

0.99

135

A3V

ε Hyi

ε

16978

12394

02^h 39^m 35.22^s

−68° 16′ 01.0″

4.12

0.76

153

B9III

η² Hyi

η²

11977

8928

01^h 54^m 56.01^s

−67° 38′ 50.9″

4.68

0.57

217

G5III

has a planet (b)

ν Hyi

ν

18293

13244

02^h 50^m 28.54^s

−75° 04′ 00.8″

4.76

−0.26

329

K3III

ζ Hyi

ζ

17566

12876

02^h 45^m 32.53^s

−67° 37′ 00.2″

4.83

0.05

295

A2IV/V

λ Hyi

λ

4815

3781

00^h 48^m 35.12^s

−74° 55′ 24.1″

5.09

1.10

205

K5III

μ Hyi

μ

16522

11757

02^h 31^m 40.12^s

−79° 06′ 33.3″

5.27

0.51

292

G4III

θ Hyi

θ

19400

14131

03^h 02^m 15.40^s

−71° 54′ 09.0″

5.51

−0.52

525

B8III/IV

ι Hyi

ι

21024

15201

03^h 15^m 57.36^s

−77° 23′ 19.0″

5.51

3.17

96

F4IV-V

π¹ Hyi

π¹

14141

10418

02^h 14^m 14.50^s

−67° 50′ 29.6″

5.57

−1.21

739

M1III

suspected variable, V_max = 5.52^m, V_min = 5.58^m

π² Hyi

π²

14287

10513

02^h 15^m 28.56^s

−67° 44′ 46.8″

5.67

−0.11

468

K2III

BN Hyi

ρ^[1]

BN

20313

14521

03^h 07^m 31.90^s

−78° 59′ 21.9″

5.70

1.26

248

F2II-III

δ Sct variable, ΔV = 0.02^m

HD 10615

10615

7921

01^h 41^m 47.95^s

−60° 47′ 21.3″

5.70

0.42

371

K2/K3III

HD 8810

8810

6631

01^h 25^m 05.28^s

−64° 22′ 10.0″

5.92

−1.53

1009

M0III

HD 1801

1801

1706

00^h 21^m 28.74^s

−77° 25′ 36.7″

5.96

−0.69

697

K3III

HD 21722

21722

15968

03^h 25^m 36.25^s

−69° 20′ 11.7″

5.96

2.99

128

F3V

κ Hyi

κ^[2]

15248

11095

02^h 22^m 52.47^s

−73° 38′ 45.0″

5.99

1.05

318

K0III

suspected variable

HD 9896

9896

7387

01^h 35^m 14.71^s

−58° 08′ 21.8″

6.03

3.00

132

F2V

τ² Hyi

τ²

11604

8366

01^h 47^m 46.69^s

−80° 10′ 34.2″

6.05

2.09

202

F0III

HD 11995

11995

8983

01^h 55^m 46.47^s

−60° 51′ 40.1″

6.07

2.73

152

F0IV/V

HD 12477

12477

9318

01^h 59^m 41.08^s

−66° 03′ 59.7″

6.09

0.50

428

K2III

HD 10042

10042

7271

01^h 33^m 39.26^s

−78° 30′ 16.1″

6.11

0.46

441

G3IV

HD 19940

19940

14547

03^h 07^m 49.00^s

−69° 15′ 53.8″

6.12

1.30

300

K1III

HD 21563

21563

15840

03^h 24^m 02.28^s

−69° 37′ 28.7″

6.14

−0.17

595

A4:V+...

σ Hyi

σ

12363

8991

01^h 55^m 50.25^s

−78° 20′ 55.2″

6.15

3.07

135

F5/F6IV/V

HD 10052

10052

7506

01^h 36^m 44.77^s

−58° 16′ 15.5″

6.18

−0.78

805

M3III

semiregular variable, V_max = 6.11^m, V_min = 6.23^m

CT Hyi

CT

24188

17543

03^h 45^m 23.70^s

−71° 39′ 29.7″

6.26

0.50

463

B8V

α² CVn variable

τ¹ Hyi

τ¹

10859

7879

01^h 41^m 21.29^s

−79° 08′ 53.7″

6.33

0.91

395

G6/G8III

HD 12270

12270

9149

01^h 57^m 53.37^s

−65° 25′ 28.9″

6.36

0.28

535

G8II/III

HD 11944

11944

8957

01^h 55^m 19.69^s

−60° 18′ 44.6″

6.43

2.73

179

F2V

HD 1221

1221

1268

00^h 15^m 54.94^s

−75° 54′ 41.8″

6.49

−0.18

704

G8/K0III

GJ 3021

1237

1292

00^h 16^m 12.68^s

−79° 51′ 04.3″

6.59

5.36

57

G8.5Vk

has a planet (b)

CN Hyi

CN

17653

12884

02^h 45^m 36.97^s

−71° 14′ 09.4″

6.66

195.8

F6V

W UMa variable

η¹ Hyi

η¹

11733

8751

01^h 52^m 34.74^s

−67° 56′ 40.2″

6.77

−0.03

748

B9V

suspected variable

CH Hyi

(α)^[3]

CH

12853

9472

02^h 01^m 52.33^s

−74° 26′ 44.62″

6.87

2265

HD 18050

(γ)^[4]

18050

13119

02^h 48^m 44.42^s

−73° 50′ 29.40″

6.94

924

suspected variable

HD 13950

(β)^[5]

10206

13950

02^h 11^m 17.63^s

−74° 30′ 04.93″

7.14

824

HD 10180

10180

7599

01^h 37^m 53.58^s

−60° 30′ 41.5″

7.33

4.36

128

G1V

has six confirmed planets (c, d, e, f, g and h) and three unconfirmed planets (b, i and j)

HD 20003

20003

14530

03^h 07^m 38^s

−72° 19′ 19″

8.37

143

G8V

has two planets (b & c)

HD 19918

BT

19918

14026

03^h 00^m 37.09^s

−81° 54′ 07.3″

9.35

801

Ap...

rapidly oscillating Ap star

HD 2685

2685

00^h 29^m 19.0^s

−76° 18′ 15″

9.59

646

Ap...

has a planet (b)

WASP-126

04^h 13^m 30.0^s

−69° 13′ 37″

10.8

763

G2

has a transiting planet (b)

VW Hyi

VW

04^h 09^m 11.39^s

−71° 17′ 41.3″

14.4

SU UMa variable, V_max = 8.4^m, V_min = 14.4^m, P = 0.074271 d

SMSS J031300.36-670839.3

03^h 13^m 00.36^s

−67° 08′ 39.3″

14.7

K

oldest known star as of 2014

WX Hyi

WX

02^h 09^m 50.84^s

−63° 18′ 39.9″

14.85

SU UMa variable, V_max = 9.6^m, V_min = 14.85^m, P = 0.074813 d

BL Hyi

BL

01^h 41^m 00.38^s

−67° 53′ 27.4″

14.9

Am

AM Her variable and eclipsing binary, V_max = 14.3^m, V_min = 18.6^m, P = 0.078915 d

Table legend:

• Name = Proper name
• B = Bayer designation
• F or/and G. = Flamsteed designation or Gould designation
• Var = Variable star designation
• HD = Henry Draper Catalogue designation number
• HIP = Hipparcos Catalogue designation number
• RA = Right ascension for the Epoch/Equinox J2000.0
• Dec = Declination for the Epoch/Equinox J2000.0

• vis. mag. = visual magnitude (m or m_v), also known as apparent magnitude
• abs. mag. = absolute magnitude (M_v)
• Dist. (ly) = Distance in light-years from Earth
• Sp. class = Spectral class of the star in the stellar classification system
• Notes = Common name(s) or alternate name(s); comments; notable properties [for example: multiple star status, range of variability if it is a variable star, exoplanets, etc.]

Notes

↑ Labelled Rho Hydri (ρ Hyi/ρ Hydri) by Bode in his Uranographia
↑ Labelled Kappa Nubeculae Minoris by Bode in his Uranographia
↑ Labelled Alpha Nubeculae Minoris by Bode in his Uranographia
↑ Labelled Gamma Nubeculae Minoris by Bode in his Uranographia
↑ Labelled Beta Nubeculae Minoris by Bode in his Uranographia

References

ESA (1997). "The Hipparcos and Tycho Catalogues" . Retrieved 2006-12-26.
Kostjuk, N. D. (2002). "HD-DM-GC-HR-HIP-Bayer-Flamsteed Cross Index" . Retrieved 2006-12-26.
Roman, N. G. (1987). "Identification of a Constellation from a Position" . Retrieved 2006-12-26.
Gould, B. A. "Uranometria Argentina". Reprinted and updated by Pilcher, F. Archived from the original on 2012-02-27. Retrieved 2010-07-16.
"AAVSO Website". American Association of Variable Star Observers. Retrieved 9 March 2014.

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[1] Labelled Rho Hydri (ρ Hyi/ρ Hydri) by Bode in his Uranographia

[2] Labelled Kappa Nubeculae Minoris by Bode in his Uranographia

[3] Labelled Alpha Nubeculae Minoris by Bode in his Uranographia

[4] Labelled Gamma Nubeculae Minoris by Bode in his Uranographia

[5] Labelled Beta Nubeculae Minoris by Bode in his Uranographia

[1]

[2]

[3]

[4]

[5]

英文互译镜像站

List of stars in Hydrus

See also

References