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Hydra Constellation

Hydra (Pronounciation:Hi-dra, Abbrev:Hya, Latin:Hydrae) is a constellation, one of 88 constellations that the night sky is divided into. The sky is not divided up equally between the constellations. Hydra takes up 1302.844 sq. degrees of the night sky which equates to 3.16% of the night sky. The constellation gets its name as it name means The Water Monster . The constellation is one of the original constellations that was devised by the Ancient Greco-Egyptian astronomer Ptolemy who lived between 90 A.D. and 168 A.D.

Hydra is a northern hemispheric constellation which means it can't be seen easily or at all from the southern hemisphere. The brightest star in Hydra is Alphard. There are 15 Extrasolar Planets (Exoplanets) in this constellation that are detailed on this site.

Size and Location of Hydra

Hydra is the undefeated largest constellation in the sky by area. It accounts for just over 3% which might seem a small amount but you need to take into account it is one of 88 constellations so it takes up more than its fair share of space. Hydra is a southern constellation lying south of the equator.

Items of Interest in Hydra

The constellation is home to a number of interesting variable stars, V Hydra, a variable star that is one of the brightest of its type at an apparent magnitude of 7, it is visible with a pair of binoculars away from all light polution. The other interesting variables are U Hydrae and R Hydrae.

Legend of the Constellation

Hydra was a multi-headed sea creature that inhabited the lake near Lerna in the Argoid. It was alleged the lake had an entrance to the Underworld which it guarded. When one head was chopped off, another two would grow in its place. The only way of killing it was to chop off its head and setting fire to the severed neck. Hercules would chop off the head and Iolaus, a companion would set fire. During the fight, Hera set Cancer the crab to make things harder for Hercules.

There are no major meteor showers that radiate from within this constellation.

Hydra Facts


NameHydra
AbbreviationHya
Is a Zodiac Sign No
Brightest StarAlphard
Area1302.844 sq. deg.
Percentage of Night Sky3.16%
Size Position1st
Hemisphere Northern
Site Exoplanet Count15
Meteor Shower Count16
Bordering / Neighbouring / Surrounding ConstellationsCrater
Sextans
Leo
Cancer
Canis Minor
Monoceros
Puppis
Pyxis
Antlia
Centaurus
Lepus
Libra
Virgo
Corvus

Hydra Constellation Map


Hydra Constellation Star Map

The map was generated using Night Vision, an awesome free application by Brian Simpson.

List of Stars with Exoplanets in Hydra


StarDistance (Lt. Yrs.)Exoplanet CountDeclinationRight Ascension
HD 122430439.571-27d 25` 47.114h 02m 22.80
HD 12835684.921-25d 48` 08.014h 37m 04.90
HD 72659162.511-01d 34` 04.708h 34m 03.26
HD 72892237.381-14d 27` 22.608h 34m 52.54
HD 74156210.163+04d 34` 42.908h 42m 25.11
HD 8294389.613-12d 07` 44.809h 34m 50.73
HD 86226146.921-24d 05` 58.2 09h 56m 29.96
HD 86264224.321-15d 53` 41.909h 56m 57.85
HD 9015672.901-29d 38` 44.810h 23m 55.30
HD 9670083.672-30d 10` 27.311h 07m 54.77

List of Named Stars in Hydra without Extrasolar Planets

As there's so many stars in the cosmos, not all the stars are listed here. The site has lots of stars not listed so if your star isn't listed and you know the Henry Draper or Hipparcos ID, type https://www.universeguide.com/star/ then followed by the HIPNNNNNN or HDNNNN where NNNNN is the number part of the name. The stars that I do list have either a traditional name, a bayer or other classification name.

StarDistance (Lt. Yrs.)DeclinationRight Ascension
1 G. Hya290.70-07d 46` 20.908h 11m 33.03
1 Hydrae86.81-03d 45` 04.208h 24m 35.14
10 Hydrae210.56+05d 40` 50.108h 45m 01.28
100 G. Hya418.69-16d 16` 37.809h 08m 44.52
101 G. Hya453.00-12d 21` 27.709h 09m 11.50
102 G. Hya272.94-18d 19` 43.009h 09m 04.25
104 G. Hya165.48+05d 28` 07.209h 11m 55.69
105 G. Hya323.90+03d 52` 01.209h 12m 12.91
107 G. Hya303.97-19d 44` 51.909h 11m 58.77
109 G. Hya541.80-14d 41` 41.309h 14m 03.09
111 G. Hya364.02-15d 01` 29.509h 15m 24.95
117 G. Hya365.65-11d 06` 10.609h 16m 57.05
118 G. Hya360.80-14d 34` 26.609h 17m 07.73
12 Hydrae245.05-13d 32` 51.708h 46m 22.53
121 G. Hya451.75-15d 50` 04.309h 19m 33.11
126 G. Hya162.43-15d 37` 03.209h 20m 55.46
13 G. Hya237.73-06d 10` 45.008h 22m 30.20
136 G. Hya691.02-01d 27` 50.609h 26m 22.31
14 G. Hya1289.18-07d 32` 35.308h 22m 54.10
14 Hydrae450.50-03d 26` 34.708h 49m 21.74
14 Librae391.08-25d 26` 30.414h 57m 31.94
142 G. Hya99.20-06d 04` 15.709h 27m 46.92
144 G. Hya258.04-01d 15` 24.909h 29m 02.34
146 G. Hya420.31-02d 12` 18.609h 29m 24.47
147 G. Hya181.50-04d 14` 47.409h 29m 32.43
148 G. Hya1190.38-20d 44` 56.909h 29m 12.65
149 G. Hya1342.24-23d 20` 43.209h 29m 49.88
15 Hydrae446.19-07d 10` 38.008h 51m 34.44
150 G. Hya238.42-15d 34` 37.909h 30m 22.54
153 G. Hya167.69-10d 33` 07.109h 31m 38.97
154 G. Hya357.24-10d 22` 13.409h 31m 55.77
155 G. Hya380.59+01d 51` 51.309h 32m 41.41
156 G. Hya377.07-19d 24` 01.209h 32m 20.43
157 G. Hya408.21-08d 30` 19.009h 33m 02.00
158 G. Hya739.60-13d 31` 00.509h 32m 55.78
159 G. Hya407.20-07d 11` 24.509h 33m 19.94
16 G. Hya206.69-04d 43` 00.708h 24m 36.42
160 G. Hya362.40-21d 06` 56.709h 33m 12.47
162 G. Hya261.77-22d 51` 50.509h 33m 26.10
165 G. Hya285.86-19d 34` 59.909h 35m 33.82
166 G. Hya458.09-03d 10` 14.209h 37m 45.94
17 Crateris85.76 -29d 15` 40.911h 32m 16.42
17 G. Hya893.60+02d 06` 08.108h 25m 35.55
17 Hydrae288.64-07d 58` 15.908h 55m 29.60
172 G. Hya736.26-10d 46` 09.109h 40m 20.07
179 G. Hya390.61-16d 32` 04.609h 51m 59.53
182 G. Hya497.96-22d 29` 14.809h 54m 31.83
185 G. Hya220.23-26d 32` 59.109h 56m 46.89
19 Hydrae614.24-08d 35` 22.209h 08m 42.19
192 G. Hya508.84-18d 06` 05.110h 04m 02.83
193 G. Hya228.89-24d 17` 08.110h 04m 21.02
195 G. Hya382.37-17d 08` 29.710h 07m 09.49
197 G. Hya566.26-15d 36` 43.010h 08m 35.45
199 G. Hya276.64-12d 05` 42.910h 09m 56.49
2 Hydrae163.16-03d 59` 14.308h 26m 27.23
2 Sextantis295.44+04d 38` 57.909h 38m 27.39
20 Hydrae481.78-08d 47` 15.509h 09m 35.58
200 G. Hya90.48-12d 48` 56.410h 10m 05.96
204 G. Hya134.78-19d 09` 10.110h 12m 38.10
205 G. Hya472.02-27d 01` 44.310h 13m 19.48
206 G. Hya1186.05-23d 48` 50.310h 14m 08.98
209 G. Hya214.16-12d 31` 41.210h 19m 16.88
21 Hydrae282.88-07d 06` 35.609h 12m 26.05
210 G. Hya203.72-17d 59` 05.610h 21m 07.98
213 G. Hya345.88-23d 42` 39.210h 21m 28.70
217 G. Hya600.67-19d 51` 59.710h 22m 12.96
224 G. Hya359.21-29d 39` 49.910h 29m 29.01
225 G. Hya522.70-13d 35` 18.510h 30m 59.86
227 G. Hya139.27-28d 14` 13.510h 31m 48.73
23 Hydrae245.42-06d 21` 11.409h 16m 41.72
231 G. Hya215.01-23d 10` 34.810h 34m 57.76
233 G. Hya259.07-18d 34` 08.410h 35m 38.86
235 G. Hya134.56-26d 40` 31.010h 36m 04.51
236 G. Hya81.79-12d 13` 42.610h 36m 32.22
24 Hydrae676.69-08d 44` 41.109h 16m 41.38
243 G. Hya363.21-12d 26` 37.110h 38m 50.44
245 G. Hya829.93-13d 58` 28.410h 42m 31.38
25 Hydrae527.77-11d 57` 42.709h 17m 29.22
252 G. Hya466.61-31d 41` 16.310h 48m 14.13
258 G. Hya584.52-20d 39` 53.910h 55m 11.58
259 G. Hya158.25-33d 44` 14.810h 59m 13.74
26 G. Hya825.73-08d 48` 58.308h 28m 19.78
26 Hydrae336.95-11d 58` 29.609h 19m 46.40
260 G. Hya102.37-31d 50` 22.611h 00m 40.84
263 G. Hya698.42-31d 57` 38.811h 03m 16.09
27 G. Hya1462.62-09d 44` 54.908h 28m 51.01
27 Hydrae222.49-09d 33` 20.309h 20m 29.03
270 G. Hya433.15-29d 58` 20.811h 08m 15.77
274 G. Hya452.38-26d 48` 22.111h 11m 57.86
275 G. Hya918.77 -32d 26` 01.811h 12m 14.78
279 G. Hya154.80-34d 44` 14.311h 17m 38.88
28 Hydrae898.52-05d 07` 02.609h 25m 24.04
281 G. Hya1169.04-35d 19` 43.911h 27m 58.67
29 G. Hya272.94-15d 01` 48.708h 32m 33.39
29 Hydrae765.64-09d 13` 25.309h 27m 14.65
294 G. Hya141.07-29d 11` 48.611h 41m 08.60
297 G. Hya56.99-30d 17` 09.411h 47m 15.99
299 G. Hya504.12-27d 16` 40.611h 50m 37.24
3 G. Hya498.72-01d 09` 57.208h 13m 21.79
3 Hydrae302.84-07d 58` 56.408h 35m 28.21
30 Monocerotis122.34-03d 54` 22.908h 25m 39.67
300 G. Hya101.67-30d 50` 02.711h 51m 41.62
302 G. Hya241.78-35d 03` 59.711h 53m 26.87
303 G. Hya286.11-25d 42` 50.611h 54m 42.51
308 G. Hya1052.14-25d 54` 31.711h 58m 54.39
31 Monocerotis769.25-07d 14` 01.408h 43m 40.38
311 G. Hya758.52-35d 41` 38.212h 05m 56.69
312 G. Hya168.47-32d 57` 38.712h 06m 05.25
315 G. Hya322.30-34d 42` 17.012h 10m 02.58
317 G. Hya418.69-33d 47` 34.412h 13m 36.80
318 G. Hya512.03-29d 14` 13.912h 15m 06.42
320 G. Hya748.08-30d 20` 07.412h 23m 47.82
322 G. Hya561.38-27d 44` 56.412h 25m 18.41
323 G. Hya507.25-32d 49` 48.212h 26m 51.69
325 G. Hya607.38-32d 32` 01.412h 32m 04.40
328 G. Hya111.97-27d 08` 19.212h 37m 42.23
329 G. Hya624.83-30d 25` 20.512h 39m 03.48
33 G. Hya294.64-02d 09` 05.808h 34m 01.64
33 Hydrae566.26-05d 54` 53.309h 34m 32.64
330 G. Hya412.34-28d 19` 25.912h 44m 00.55
332 G. Hya739.60-24d 51` 06.312h 47m 53.67
333 G. Hya320.40-27d 35` 50.012h 48m 26.36
337 G. Hya387.83-22d 45` 12.512h 57m 33.17
34 G. Hya523.54+02d 44` 36.408h 35m 24.96
34 Hydrae424.14-09d 25` 28.109h 37m 51.54
342 G. Hya360.80-26d 33` 06.213h 11m 39.24
346 G. Hya1399.84-26d 24` 08.013h 28m 01.88
348 G. Hya324.54-28d 06` 45.913h 31m 33.22
349 G. Hya164.81-29d 33` 55.013h 32m 34.52
350 G. Hya233.47-28d 41` 33.813h 32m 35.96
351 G. Hya266.04-26d 29` 42.813h 36m 48.51
354 G. Hya150.93-29d 33` 38.413h 38m 42.13
356 G. Hya517.72-25d 30` 03.213h 44m 45.70
357 G. Hya283.87-26d 06` 57.513h 45m 36.94
359 G. Hya382.82-29d 04` 52.513h 50m 06.54
360 G. Hya63.52-24d 23` 23.213h 51m 20.70
361 G. Hya211.52-28d 34` 09.913h 54m 16.75
363 G. Hya573.22-23d 01` 21.513h 57m 27.75
364 G. Hya640.79-25d 59` 53.113h 57m 58.86
369 G. Hya558.50-24d 21` 48.014h 12m 24.55
37 G. Hya416.02-04d 56` 02.408h 37m 27.17
37 Hydrae1003.58-10d 34` 13.009h 39m 47.42
371 G. Hya530.35-26d 36` 44.214h 13m 13.25
372 G. Hya551.88-29d 16` 54.714h 15m 01.28
373 G. Hya903.50-27d 08` 28.214h 19m 07.17
374 G. Hya58.82-25d 48` 58.714h 19m 01.13
378 G. Hya234.14-26d 51` 07.614h 25m 47.77
391 G. Hya494.19-29d 09` 27.414h 57m 13.72
44 Hydrae797.47-23d 44` 42.810h 34m 00.89
47 Hydrae332.82-24d 58` 19.813h 58m 31.18
48 G. Hya309.75-11d 57` 57.508h 42m 09.83
48 Hydrae182.62-25d 00` 36.614h 00m 00.25
50 G. Hya991.38+04d 20` 04.508h 43m 59.79
50 Hydrae217.59-27d 15` 40.014h 12m 46.03
51 Hydrae157.41-27d 45` 13.414h 23m 05.91
52 Hydrae393.44-29d 29` 29.714h 28m 10.44
54 G. Hya532.95+04d 39` 52.408h 45m 34.84
54 Hydrae98.78-25d 26` 34.514h 46m 00.18
55 G. Hya201.46-02d 36` 03.708h 45m 20.77
55 Hydrae742.97-25d 37` 27.214h 47m 22.56
56 G. Hya302.00-02d 02` 55.608h 46m 02.45
56 Hydrae358.03-26d 05` 14.914h 47m 44.78
57 Hydrae447.41-26d 38` 46.114h 47m 57.56
58 G. Hya1000.50-11d 00` 24.508h 46m 06.89
58 Hydrae331.13-27d 57` 36.814h 50m 17.47
59 Hydrae368.96-27d 39` 26.314h 58m 39.29
6 G. Hya550.02+03d 56` 53.108h 19m 49.85
6 Hydrae388.29-12d 28` 31.308h 40m 01.52
60 Hydrae331.80-28d 03` 37.915h 02m 06.38
61 G. Hya401.68-01d 53` 49.408h 47m 15.01
63 G. Hya616.57-17d 03` 10.308h 47m 21.48
65 G. Hya704.46-06d 33` 31.508h 48m 04.87
66 G. Hya557.54-01d 02` 41.408h 48m 37.48
71 G. Hya1009.79+05d 20` 25.208h 52m 24.18
73 G. Hya339.05-13d 13` 58.608h 52m 30.74
74 G. Hya453.63-16d 57` 08.508h 53m 05.35
8 G. Hya128.82-00d 54` 32.808h 20m 12.98
80 G. Hya446.19-18d 14` 28.308h 55m 12.42
81 G. Hya1418.10+04d 14` 11.708h 56m 37.04
82 G. Hya817.45-15d 26` 22.008h 55m 54.49
84 G. Hya723.20-16d 42` 31.308h 56m 34.13
88 G. Hya68.61-16d 07` 59.708h 58m 43.78
89 G. Hya128.06-19d 12` 28.108h 59m 39.94
9 G. Hya689.56-05d 19` 47.408h 20m 17.01
9 Hydrae211.79-15d 56` 35.308h 41m 43.33
90 G. Hya1038.74+05d 38` 27.609h 01m 31.40
92 G. Hya490.47-00d 28` 58.209h 01m 58.02
Alphard180.30-08d 39` 31.309h 27m 35.25
Ashlesha129.28+06d 25` 08.108h 46m 46.65
Beta Hydrae309.75-33d 54` 29.311h 52m 54.56
Chi1 Hydrae141.01-27d 17` 36.911h 05m 20.03
Chi2 Hydrae692.49-27d 17` 16.111h 05m 57.55
Delta Hydrae160.36+05d 42` 13.708h 37m 39.41
Eta Hydrae586.62+03d 23` 55.208h 43m 13.49
Gamma Hydrae133.84-23d 10` 17.113h 18m 55.25
HQ Hydrae345.51-10d 09` 57.008h 19m 15.11
HR 4339394.39-32d 22` 02.811h 09m 53.38
Hydrobius167.18+05d 56` 43.908h 55m 23.68
II Hydrae545.42-26d 44` 59.111h 48m 45.11
Iota Hydrae263.25-01d 08` 33.609h 39m 51.33
Kappa Hydrae436.05-14d 19` 56.109h 40m 18.38
Lambda Hydrae112.55-12d 21` 13.810h 10m 35.40
LO Hydrae243.22-02d 31` 01.608h 28m 29.16
LV Hydrae393.44-33d 18` 55.611h 57m 03.78
Minchir372.76+03d 20` 29.308h 38m 45.45
MO Hydrae218.46-26d 44` 18.112h 51m 57.97
Mu Hydrae234.14-16d 50` 09.910h 26m 05.51
NS Hydrae813.37+01d 27` 45.809h 06m 59.95
Nu Hydrae143.75-16d 11` 38.910h 49m 37.43
Omega Hydrae896.05+05d 05` 32.409h 05m 58.38
Omicron Hydrae448.64-34d 44` 40.811h 40m 12.82
OY Hydrae797.47-23d 57` 02.809h 59m 06.32
Phi Hydrae210.56-16d 52` 35.910h 38m 35.01
Phi1 Hydrae239.30-16d 57` 30.710h 32m 41.17
Phi2 Hydrae756.76-16d 20` 39.610h 36m 16.68
Pi Hydrae100.98-26d 40` 55.314h 06m 22.27
Psi Hydrae231.49-23d 07` 04.713h 09m 03.28
R Hydrae405.17-23d 16` 52.913h 29m 42.82
Rho Hydrae354.14+05d 50` 16.408h 48m 25.98
Tau 1 Hydrae56.54-02d 46` 08.209h 29m 08.84
Tau 2 Hydrae517.72-01d 11` 04.809h 31m 58.93
Theta Hydrae113.49+02d 18` 54.109h 14m 21.79
U Hydrae679.51-13d 23` 04.010h 37m 33.25
Upsilon1 Hydrae263.89-14d 50` 47.609h 51m 28.68
Upsilon2 Hydrae313.62-13d 03` 52.810h 05m 07.49
V Hydrae2265.02-21d 15` 00.310h 51m 37.26
V335 Hydrae1169.04-34d 07` 31.012h 13m 12.97
Wise 0855-0714-07d 14' 42.508h 55m 10.83
Xi Hydrae129.64-31d 51` 27.111h 33m 00.26



Objects of Interest (Galaxies, Nebulas, Supernovas, etc) in Hydra


NameTypeDistanceDeclinationRight Ascension
M48 Globular ClusterGlobular Cluster1.5-05:4808h 13m 8
M68 Globular ClusterGlobular Cluster33.6-26:4512h 39m 5
M83 Spiral GalaxySpiral Galaxy14700-29:5213h 37m 0


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