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 268→
SolPhoDeiTerVenJovSat
1234
567891011
12131415161718
19202122232425
262728
1 Hydra 268 2 Hydra 268 3 Hydra 268 4 Hydra 268 5 Hydra 268 6 Hydra 268 7 Hydra 268 8 Hydra 268 9 Hydra 268 10 Hydra 268 11 Hydra 268 12 Hydra 268 13 Hydra 268 14 Hydra 268 15 Hydra 268 16 Hydra 268 17 Hydra 268 18 Hydra 268 19 Hydra 268 20 Hydra 268 21 Hydra 268 22 Hydra 268 23 Hydra 268 24 Hydra 268 25 Hydra 268 26 Hydra 268 27 Hydra 268 28 Hydra 268 1 Corvus 268 1 April 2115 2 April 2115 3 April 2115 4 April 2115 5 April 2115 6 April 2115 7 April 2115 8 April 2115 9 April 2115 10 April 2115 11 April 2115 12 April 2115 13 April 2115 14 April 2115 15 April 2115 16 April 2115 17 April 2115 18 April 2115 19 April 2115 20 April 2115 21 April 2115 22 April 2115 23 April 2115 24 April 2115 25 April 2115 26 April 2115 27 April 2115 28 April 2115 29 April 2115 30 April 2115
MS 31797 MS 31798 MS 31799 MS 31800 MS 31801 MS 31802 MS 31803 MS 31804 MS 31805 MS 31806 MS 31807 MS 31808 MS 31809 MS 31810 MS 31811 MS 31812 MS 31813 MS 31814 MS 31815 MS 31816 MS 31817 MS 31818 MS 31819 MS 31820 MS 31821 MS 31822 MS 31823 MS 31824 MS 31825 MD 32670 MD 32671 MD 32672 MD 32673 MD 32674 MD 32675 MD 32676 MD 32677 MD 32678 MD 32679 MD 32680 MD 32681 MD 32682 MD 32683 MD 32684 MD 32685 MD 32686 MD 32687 MD 32688 MD 32689 MD 32690 MD 32691 MD 32692 MD 32693 MD 32694 MD 32695 MD 32696 MD 32697 MD 32698 MD 32699