IAU and Sky & Telescope magazine (Roger Sinnott & Rick Fienberg)
Hydra
The Hydra
OriginAncient
AbbreviationHya
GenitiveHydrae
Pronunciation/ˈhaɪdrə/ genitive /ˈhaɪdriː/
HIGH-druh
LocationCelestial Equator
Primary StarAlphard (α Hya)
Right Ascention 9h 28m Declination -8° 40'
Martian Solar Lag δ(🜨→♂) +0.272 h (16.3 min)
Hydra represents the Lernaean Hydra, a reptilian monster so vile that even its breath and blood were highly poisonous. It had nine serpent heads, eight mortal and one immortal. Every time one was cut off two would grow in its place. Defeating the Lernaean Hydra was the second labor assigned to Hercules by King Eurystheus. In the marshes of Lerna, Hercules drew out the Hydra from its lair, and with his mighty club, bashed one of its heads in. In its place, two heads sprouted, just as mean and deadly as the original. He realized he would need to take a different approach. He had his nephew Iolaus quickly cauterize each stump after it was bashed in. This prevented the heads from growing back. Hercules did this with each of the mortal heads. He struck off the immortal head and buried it deep in the ground and placed a huge rock on top of it. With his second labor complete, he dipped the tips of his arrows into the blood of the Hydra, covering them with deadly poison. In a second myth involving Hydra, this constellation represents the snake that Corvus used in a lie to Apollo.
www.underthesky.com
Hydra as depicted by Johann Bayer in his Uranometria (1603). Source image provided by www.RareMaps.com — Barry Lawrence Ruderman Antique Maps Inc. Via www.underthenightsky.com.
←Hydra -260→
SolPhoDeiTerVenJovSat
1234
567891011
12131415161718
19202122232425
262728
1 Hydra -260 2 Hydra -260 3 Hydra -260 4 Hydra -260 5 Hydra -260 6 Hydra -260 7 Hydra -260 8 Hydra -260 9 Hydra -260 10 Hydra -260 11 Hydra -260 12 Hydra -260 13 Hydra -260 14 Hydra -260 15 Hydra -260 16 Hydra -260 17 Hydra -260 18 Hydra -260 19 Hydra -260 20 Hydra -260 21 Hydra -260 22 Hydra -260 23 Hydra -260 24 Hydra -260 25 Hydra -260 26 Hydra -260 27 Hydra -260 28 Hydra -260 3 Centaurus -259 14 December 1121 15 December 1121 16 December 1121 17 December 1121 18 December 1121 19 December 1121 20 December 1121 21 December 1121 22 December 1121 23 December 1121 24 December 1121 25 December 1121 26 December 1121 27 December 1121 28 December 1121 29 December 1121 30 December 1121 31 December 1121 1 January 1122 2 January 1122 3 January 1122 4 January 1122 5 January 1122 6 January 1122 7 January 1122 8 January 1122 9 January 1122 10 January 1122 11 January 1122
MS -321192 MS -321193 MS -321194 MS -321195 MS -321196 MS -321197 MS -321198 MS -321199 MS -321200 MS -321201 MS -321202 MS -321203 MS -321204 MS -321205 MS -321206 MS -321207 MS -321208 MS -321209 MS -321210 MS -321211 MS -321212 MS -321213 MS -321214 MS -321215 MS -321216 MS -321217 MS -321218 MS -321219 MS -321165 MD -330124 MD -330123 MD -330122 MD -330121 MD -330120 MD -330119 MD -330118 MD -330117 MD -330116 MD -330115 MD -330114 MD -330113 MD -330112 MD -330111 MD -330110 MD -330109 MD -330108 MD -330107 MD -330106 MD -330105 MD -330104 MD -330103 MD -330102 MD -330101 MD -330100 MD -330099 MD -330098 MD -330097 MD -330096