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 748→
SolPhoDeiTerVenJovSat
123
45678910
11121314151617
18192021222324
25262728
1 Hydra 748 2 Hydra 748 3 Hydra 748 4 Hydra 748 5 Hydra 748 6 Hydra 748 7 Hydra 748 8 Hydra 748 9 Hydra 748 10 Hydra 748 11 Hydra 748 12 Hydra 748 13 Hydra 748 14 Hydra 748 15 Hydra 748 16 Hydra 748 17 Hydra 748 18 Hydra 748 19 Hydra 748 20 Hydra 748 21 Hydra 748 22 Hydra 748 23 Hydra 748 24 Hydra 748 25 Hydra 748 26 Hydra 748 27 Hydra 748 28 Hydra 748 1 Corvus 748 25 April 3018 26 April 3018 27 April 3018 28 April 3018 29 April 3018 30 April 3018 1 May 3018 2 May 3018 3 May 3018 4 May 3018 5 May 3018 6 May 3018 7 May 3018 8 May 3018 9 May 3018 10 May 3018 11 May 3018 12 May 3018 13 May 3018 14 May 3018 15 May 3018 16 May 3018 17 May 3018 18 May 3018 19 May 3018 20 May 3018 21 May 3018 22 May 3018 23 May 3018 24 May 3018
MS 352720 MS 352721 MS 352722 MS 352723 MS 352724 MS 352725 MS 352726 MS 352727 MS 352728 MS 352729 MS 352730 MS 352731 MS 352732 MS 352733 MS 352734 MS 352735 MS 352736 MS 352737 MS 352738 MS 352739 MS 352740 MS 352741 MS 352742 MS 352743 MS 352744 MS 352745 MS 352746 MS 352747 MS 352748 MD 362508 MD 362509 MD 362510 MD 362511 MD 362512 MD 362513 MD 362514 MD 362515 MD 362516 MD 362517 MD 362518 MD 362519 MD 362520 MD 362521 MD 362522 MD 362523 MD 362524 MD 362525 MD 362526 MD 362527 MD 362528 MD 362529 MD 362530 MD 362531 MD 362532 MD 362533 MD 362534 MD 362535 MD 362536 MD 362537