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 664→
SolPhoDeiTerVenJovSat
123
45678910
11121314151617
18192021222324
25262728
1 Hydra 664 2 Hydra 664 3 Hydra 664 4 Hydra 664 5 Hydra 664 6 Hydra 664 7 Hydra 664 8 Hydra 664 9 Hydra 664 10 Hydra 664 11 Hydra 664 12 Hydra 664 13 Hydra 664 14 Hydra 664 15 Hydra 664 16 Hydra 664 17 Hydra 664 18 Hydra 664 19 Hydra 664 20 Hydra 664 21 Hydra 664 22 Hydra 664 23 Hydra 664 24 Hydra 664 25 Hydra 664 26 Hydra 664 27 Hydra 664 28 Hydra 664 1 Corvus 664 11 April 2860 12 April 2860 13 April 2860 14 April 2860 15 April 2860 16 April 2860 17 April 2860 18 April 2860 19 April 2860 20 April 2860 21 April 2860 22 April 2860 23 April 2860 24 April 2860 25 April 2860 26 April 2860 27 April 2860 28 April 2860 29 April 2860 30 April 2860 1 May 2860 2 May 2860 3 May 2860 4 May 2860 5 May 2860 6 May 2860 7 May 2860 8 May 2860 9 May 2860 10 May 2860
MS 296559 MS 296560 MS 296561 MS 296562 MS 296563 MS 296564 MS 296565 MS 296566 MS 296567 MS 296568 MS 296569 MS 296570 MS 296571 MS 296572 MS 296573 MS 296574 MS 296575 MS 296576 MS 296577 MS 296578 MS 296579 MS 296580 MS 296581 MS 296582 MS 296583 MS 296584 MS 296585 MS 296586 MS 296587 MD 304787 MD 304788 MD 304789 MD 304790 MD 304791 MD 304792 MD 304793 MD 304794 MD 304795 MD 304796 MD 304797 MD 304798 MD 304799 MD 304800 MD 304801 MD 304802 MD 304803 MD 304804 MD 304805 MD 304806 MD 304807 MD 304808 MD 304809 MD 304810 MD 304811 MD 304812 MD 304813 MD 304814 MD 304815 MD 304816