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 818→
SolPhoDeiTerVenJovSat
1234
567891011
12131415161718
19202122232425
262728
1 Hydra 818 2 Hydra 818 3 Hydra 818 4 Hydra 818 5 Hydra 818 6 Hydra 818 7 Hydra 818 8 Hydra 818 9 Hydra 818 10 Hydra 818 11 Hydra 818 12 Hydra 818 13 Hydra 818 14 Hydra 818 15 Hydra 818 16 Hydra 818 17 Hydra 818 18 Hydra 818 19 Hydra 818 20 Hydra 818 21 Hydra 818 22 Hydra 818 23 Hydra 818 24 Hydra 818 25 Hydra 818 26 Hydra 818 27 Hydra 818 28 Hydra 818 1 Corvus 818 4 January 3150 5 January 3150 6 January 3150 7 January 3150 8 January 3150 9 January 3150 10 January 3150 11 January 3150 12 January 3150 13 January 3150 14 January 3150 15 January 3150 16 January 3150 17 January 3150 18 January 3150 19 January 3150 20 January 3150 21 January 3150 22 January 3150 23 January 3150 24 January 3150 25 January 3150 26 January 3150 27 January 3150 28 January 3150 29 January 3150 30 January 3150 31 January 3150 1 February 3150 2 February 3150
MS 399521 MS 399522 MS 399523 MS 399524 MS 399525 MS 399526 MS 399527 MS 399528 MS 399529 MS 399530 MS 399531 MS 399532 MS 399533 MS 399534 MS 399535 MS 399536 MS 399537 MS 399538 MS 399539 MS 399540 MS 399541 MS 399542 MS 399543 MS 399544 MS 399545 MS 399546 MS 399547 MS 399548 MS 399549 MD 410609 MD 410610 MD 410611 MD 410612 MD 410613 MD 410614 MD 410615 MD 410616 MD 410617 MD 410618 MD 410619 MD 410620 MD 410621 MD 410622 MD 410623 MD 410624 MD 410625 MD 410626 MD 410627 MD 410628 MD 410629 MD 410630 MD 410631 MD 410632 MD 410633 MD 410634 MD 410635 MD 410636 MD 410637 MD 410638