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 1225→
SolPhoDeiTerVenJovSat
123456
78910111213
14151617181920
21222324252627
28
1 Hydra 1225 2 Hydra 1225 3 Hydra 1225 4 Hydra 1225 5 Hydra 1225 6 Hydra 1225 7 Hydra 1225 8 Hydra 1225 9 Hydra 1225 10 Hydra 1225 11 Hydra 1225 12 Hydra 1225 13 Hydra 1225 14 Hydra 1225 15 Hydra 1225 16 Hydra 1225 17 Hydra 1225 18 Hydra 1225 19 Hydra 1225 20 Hydra 1225 21 Hydra 1225 22 Hydra 1225 23 Hydra 1225 24 Hydra 1225 25 Hydra 1225 26 Hydra 1225 27 Hydra 1225 28 Hydra 1225 1 Corvus 1225 26 September 3915 27 September 3915 28 September 3915 29 September 3915 30 September 3915 1 October 3915 2 October 3915 3 October 3915 4 October 3915 5 October 3915 6 October 3915 7 October 3915 8 October 3915 9 October 3915 10 October 3915 11 October 3915 12 October 3915 13 October 3915 14 October 3915 15 October 3915 16 October 3915 17 October 3915 18 October 3915 19 October 3915 20 October 3915 21 October 3915 22 October 3915 23 October 3915 24 October 3915
MS 671637 MS 671638 MS 671639 MS 671640 MS 671641 MS 671642 MS 671643 MS 671644 MS 671645 MS 671646 MS 671647 MS 671648 MS 671649 MS 671650 MS 671651 MS 671652 MS 671653 MS 671654 MS 671655 MS 671656 MS 671657 MS 671658 MS 671659 MS 671660 MS 671661 MS 671662 MS 671663 MS 671664 MS 671665 MD 690284 MD 690285 MD 690286 MD 690287 MD 690288 MD 690289 MD 690290 MD 690291 MD 690292 MD 690293 MD 690294 MD 690295 MD 690296 MD 690297 MD 690298 MD 690299 MD 690300 MD 690301 MD 690302 MD 690303 MD 690304 MD 690305 MD 690306 MD 690307 MD 690308 MD 690309 MD 690310 MD 690311 MD 690312