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
00h 25m 39.20s
−77° 15′ 18.1″
2.79
3.45
24
G2IV
suspected variable, Vmax = 2.75m, Vmin = 2.81m
α Hyi
α
12311
9236
01h 58m 45.87s
−61° 34′ 11.7″
2.86
1.16
71
F0V
Head of Hydrus
γ Hyi
γ
24512
17678
03h 47m 14.23s
−74° 14′ 21.3″
3.26
−0.83
214
M2III
Foo Pih; semiregular variable
δ Hyi
δ
15008
11001
02h 21m 45.02s
−68° 39′ 33.9″
4.08
0.99
135
A3V
ε Hyi
ε
16978
12394
02h 39m 35.22s
−68° 16′ 01.0″
4.12
0.76
153
B9III
η2 Hyi
η2
11977
8928
01h 54m 56.01s
−67° 38′ 50.9″
4.68
0.57
217
G5III
has a planet (b)
ν Hyi
ν
18293
13244
02h 50m 28.54s
−75° 04′ 00.8″
4.76
−0.26
329
K3III
ζ Hyi
ζ
17566
12876
02h 45m 32.53s
−67° 37′ 00.2″
4.83
0.05
295
A2IV/V
λ Hyi
λ
4815
3781
00h 48m 35.12s
−74° 55′ 24.1″
5.09
1.10
205
K5III
μ Hyi
μ
16522
11757
02h 31m 40.12s
−79° 06′ 33.3″
5.27
0.51
292
G4III
θ Hyi
θ
19400
14131
03h 02m 15.40s
−71° 54′ 09.0″
5.51
−0.52
525
B8III/IV
ι Hyi
ι
21024
15201
03h 15m 57.36s
−77° 23′ 19.0″
5.51
3.17
96
F4IV-V
π1 Hyi
π1
14141
10418
02h 14m 14.50s
−67° 50′ 29.6″
5.57
−1.21
739
M1III
suspected variable, Vmax = 5.52m, Vmin = 5.58m
π2 Hyi
π2
14287
10513
02h 15m 28.56s
−67° 44′ 46.8″
5.67
−0.11
468
K2III
BN Hyi
BN
20313
14521
03h 07m 31.90s
−78° 59′ 21.9″
5.70
1.26
248
F2II-III
δ Sct variable, ΔV = 0.02m
HD 10615
10615
7921
01h 41m 47.95s
−60° 47′ 21.3″
5.70
0.42
371
K2/K3III
HD 8810
8810
6631
01h 25m 05.28s
−64° 22′ 10.0″
5.92
−1.53
1009
M0III
HD 1801
1801
1706
00h 21m 28.74s
−77° 25′ 36.7″
5.96
−0.69
697
K3III
HD 21722
21722
15968
03h 25m 36.25s
−69° 20′ 11.7″
5.96
2.99
128
F3V
κ Hyi
κ
15248
11095
02h 22m 52.47s
−73° 38′ 45.0″
5.99
1.05
318
K0III
suspected variable
HD 9896
9896
7387
01h 35m 14.71s
−58° 08′ 21.8″
6.03
3.00
132
F2V
τ2 Hyi
τ2
11604
8366
01h 47m 46.69s
−80° 10′ 34.2″
6.05
2.09
202
F0III
HD 11995
11995
8983
01h 55m 46.47s
−60° 51′ 40.1″
6.07
2.73
152
F0IV/V
HD 12477
12477
9318
01h 59m 41.08s
−66° 03′ 59.7″
6.09
0.50
428
K2III
HD 10042
10042
7271
01h 33m 39.26s
−78° 30′ 16.1″
6.11
0.46
441
G3IV
HD 19940
19940
14547
03h 07m 49.00s
−69° 15′ 53.8″
6.12
1.30
300
K1III
HD 21563
21563
15840
03h 24m 02.28s
−69° 37′ 28.7″
6.14
−0.17
595
A4:V+...
σ Hyi
σ
12363
8991
01h 55m 50.25s
−78° 20′ 55.2″
6.15
3.07
135
F5/F6IV/V
HD 10052
10052
7506
01h 36m 44.77s
−58° 16′ 15.5″
6.18
−0.78
805
M3III
semiregular variable, Vmax = 6.11m, Vmin = 6.23m
CT Hyi
CT
24188
17543
03h 45m 23.70s
−71° 39′ 29.7″
6.26
0.50
463
B8V
α2 CVn variable
τ1 Hyi
τ1
10859
7879
01h 41m 21.29s
−79° 08′ 53.7″
6.33
0.91
395
G6/G8III
HD 12270
12270
9149
01h 57m 53.37s
−65° 25′ 28.9″
6.36
0.28
535
G8II/III
HD 11944
11944
8957
01h 55m 19.69s
−60° 18′ 44.6″
6.43
2.73
179
F2V
HD 1221
1221
1268
00h 15m 54.94s
−75° 54′ 41.8″
6.49
−0.18
704
G8/K0III
GJ 3021
1237
1292
00h 16m 12.68s
−79° 51′ 04.3″
6.59
5.36
57
G8.5Vk
has a planet (b)
CN Hyi
CN
17653
12884
02h 45m 36.97s
−71° 14′ 09.4″
6.66
195.8
F6V
W UMa variable
η1 Hyi
η1
11733
8751
01h 52m 34.74s
−67° 56′ 40.2″
6.77
−0.03
748
B9V
suspected variable
HD 10180
10180
7599
01h 37m 53.58s
−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
03h 07m 38s
−72° 19′ 19″
8.37
143
G8V
has two planets (b & c)
HD 19918
BT
19918
14026
03h 00m 37.09s
−81° 54′ 07.3″
9.35
801
Ap...
rapidly oscillating Ap star
HD 2685
2685
00h 29m 19.0s
−76° 18′ 15″
9.59
646
Ap...
has a planet (b)
WASP-126
04h 13m 30.0s
−69° 13′ 37″
10.8
763
G2
has a transiting planet (b)
VW Hyi
VW
04h 09m 11.39s
−71° 17′ 41.3″
14.4
SU UMa variable, Vmax = 8.4m, Vmin = 14.4m, P = 0.074271 d
SMSS J031300.36-670839.3
03h 13m 00.36s
−67° 08′ 39.3″
14.7
K
oldest known star as of 2014
WX Hyi
WX
02h 09m 50.84s
−63° 18′ 39.9″
14.85
SU UMa variable, Vmax = 9.6m, Vmin = 14.85m, P = 0.074813 d
BL Hyi
BL
01h 41m 00.38s
−67° 53′ 27.4″
14.9
Am
AM Her variable and eclipsing binary, Vmax = 14.3m, Vmin = 18.6m, 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 mv), also known as apparent magnitude
• abs. mag. = absolute magnitude (Mv)
• 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.]
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