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Hydra - The Sea Serpent Hydra, the sea serpent, may be the longest and largest of all constellations, but its stars are very faint. Hydra is the longest constellation in the sky and is also the largest in terms of area. Hydra is the longest constellation in the sky (>90 degrees) and is also the largest in terms of area. www.windows.ucar.edu /the_universe/hydra.html   (532 words)

Online Encyclopedia and Dictionary - Hydra (constellation) The constellation Hydra resembles a twisting snake [1], and features as such in some Greek myths. In Greek mythology, a crow serves Apollo, and is sent to fetch water, but it rests lazily on the journey, and after finally obtaining the water in a cup, takes back a water snake as well, as an excuse. The Hydra was also considered to be the Lernaean Hydra (as defeated by Herakles for one of his Twelve Labours) by the Greeks. fact-archive.com /encyclopedia/Hydra_(constellation)   (313 words)

Hydra (constellation) - Wikipedia, the free encyclopedia The constellation Hydra resembles a twisting snake, and features as such in some Greek myths. The origin of this story is likely to be the juxtaposition of this constellation with those of Crater, and Corvus, in the area of the sky known as the Sea. The Hydra was also considered to be the Lernaean Hydra (as defeated by Heracles for one of his Twelve Labours) by the Greeks. en.wikipedia.org /wiki/Hydra_(constellation)   (465 words)

South Spring Skies Hydra however is close to it at two points, its head and tail. Hydra's head is a group of 6 stars in a distinctive shape. Hydra, Corvus and Crater lend their stars and stories to the richness of the spring skies. ourworld.compuserve.com /homepages/bmoler/sosprsky.htm   (744 words)

Hydra As a constellation Hydra sinuously winds down from the northern hemisphere, bordering Cancer, to as far in the southern hemisphere as Centaurus, stretching out to around one hundred degrees in the process. Beta Hydrae is a pair of nearly equal stars (4.5, 5) at PA 8º and a separation of 0.9". Hydrae is a binary of two similar stars (5.8, 5.8) with an even more rapid orbit. www.dibonsmith.com /hya_con.htm   (1581 words)

Les étoiles les plus brillantes   (Site not responding. Last check: 2007-11-03) Epsilon Canis Majoris Adhara 06 59 -29.0 239.9 -11.3 B2II 1.50 -4.10 7.57 0.57 430 23. Epsilon Sagittarii Kaus Australis 18 24 -34.4 359.2 -9.8 B9.5III 1.79 -1.44 22.55 1.02 145 36. Alpha Hydrae Alphard 09 28 -8.7 241.6 +29.1 K3II 1.99 -1.69 18.40 0.78 180 49. atunivers.free.fr /stars.html   (4639 words)

Encyclopedia: Hydra (constellation) Monoceros (Latin for Unicorn) is a faint constellation on the winter night sky, surrounded by Orion to the west, Gemini to the north, Canis Major to the south and Hydra to the east. Hydrus (Latin for Hydra, also referred to as male Hydra or little Hydra) is a minor southern constellation. A second of arc or arcsecond is a unit of angular measurement which comprises one-sixtieth of an arcminute, or 1/3600 of a degree of arc or 1/1296000 ≈ 7. www.nationmaster.com /encyclopedia/Hydra-(constellation)   (3389 words)

Astronomical Association of Queensland One of the remarkable aspects of R Hydrae is that its period of brightness fluctuation has changed considerably over the years. R Hydrae was first observed in 1662 by Johannes Hevelius but its true variable nature was not identified until 1704 by Italian astronomer Giacomo Maraldi. R Hydrae's position (equinox 2000) is 13h 29.7m RA and -23° 17.1' Dec. It is located approximately 13° east of Beta Corvi and 12° south of Alpha Virginis (Spica). www.aaq.org.au /variablestars_RHydrae.htm   (806 words)

Hydra (constellation) . Centaurus . Leo . Libra . Hydrus . Apollo . Lernaean Hydra   (Site not responding. Last check: 2007-11-03) The constellation also contains the radio source Hydra A. modern constellation constellations, and was also one of the 48 constellations listed by Ptolemy. Lernaean Hydra was a snake-like beast that possessed nine usually nine, it ranged from five to one hundred heads and poisonous breath, killed by Heracles as one of his The Twelve Labours Twelve Labours. The Hydra was said to be the sibling of the Nemean Lion, and thus seeking revenge for Heracles... www.uk.kunsimuna.net /Hydra_(constellation)_UK_640466_ck   (530 words)

Hydra - The Sea Serpent Hydra - The Sea Serpent Hydra is the longest and largest of all constellations but it is also very faint. The northernmost of the six, Epsilon Hydrae, is a quintuple star, that is, a system of five stars. Hydra harbors a fairly faint, but large, open cluster of about 80 stars known as M48. www.windows.ucar.edu /the_universe/Constellations/spring/old/hydra.html   (541 words)

hydrae   (Site not responding. Last check: 2007-11-03) One of the more obscure constellations of the sky, Hydra (the Water Serpent) is known mostly for its bright Alpha star, Alphard, which lies to the south and a bit west of Regulus in Leo. The variable star R Hydrae has the distinction of being the third Mira-type variable to be... Hydrae Productions was founded in April 1998 by a large group of directors, actors and... www.e-words.org /H/hydrae.html   (962 words)

* Epsilon Hydrae - (Astronomy): Definition   (Site not responding. Last check: 2007-11-03) One of the more obscure constellations of the sky, (the Water Serpent) is known mostly for its bright Alpha star, Alphard, which lies to the south and a bit west of Regulus in Leo... Epsilon Hydrae is a multiple binary; four stars can be seen and another has been calculated to exist. Components A and B form a rapid binary with a period of 15... www.mimihu.com /astronomy/epsilon_hydrae.html   (91 words)

Constellation of the Month: Hydra, Corvus & Crater; The Water Serpent, The Crow & The Cup. Hydra was instructed to make sure that Corvus never came within reach of the Cup (Crater) to quench his thirst. This Hydra is not the same multi-headed beast that Hercules fought in his second labor, as this Hydra is always pictured with only one head. Hydra, the largest constellation, stretches across the sky from 8 hours 11.5 minutes at its western border to 15 hours 2.5 minutes at its eastern edge, and from north 6 degrees 39 minutes declination to south 35 degrees 39.5 minutes declination. www.umich.edu /~lowbrows/guide/hydra.html   (1256 words)

* Alphard - (Astronomy): Definition The northernmost of the six stars in the head of the serpent, Epsilon Hydrae, is a quintuple star - a system of five stars. Alphard (Arabic for "the solitary one") is Hydra's brightest star... The constellation of Hydra contains only one bright star Alphard, known as the "Solitary One", since it is the only bright star in that part of the sky... en.mimi.hu /astronomy/alphard.html   (223 words)

Epsilon Hydrae   (Site not responding. Last check: 2007-11-03) One of the more obscure constellations of the sky, Hydra (the Water Serpent) is known mostly for its bright Alpha star, Alphard, which lies to the south and a bit west of Regulus in Leo. Alcor in Ursa Major, with an inner double-double and an outlier, though there is some indication that Epsilon Hydrae may have yet another member. www.astro.uiuc.edu /~kaler/sow/epshya.html   (435 words)

SPACE.com -- NightSky Friday - Explore a Constellation: The Water Snake Hydras trail of faint stars finally ends in a distant tail below Virgo and reaching almost as far to the east as Libra, the Scales. Hydra is slithering underneath faint Sextans, the Sextant, Crater, the Cup, and brighter Corvus, the Crow. But the star Epsilon Hydrae is a multiple star system: a close pair that takes 15.3 years to orbit each other with a third star orbiting around the close pair and taking about 650 years to make one complete revolution. www.space.com /spacewatch/hydra_constellation_040409.html   (960 words)

Hydra   (Site not responding. Last check: 2007-11-03) Mythology - This constellation is associated with the Lernean Hydra, slain by Heracles. Stars - Epsilon hydrae is a triple star system, two components may be resolved in amateur telescopes. Visibility - Although the whole of Hydra is not visible from the UK, the best time to view it is April. www.skyguide.org.uk /constellations/hydra/hydra.htm   (121 words)

(Autumn Double Star Tour) Epsilon Hydrae is a difficult double to split in a small scope. Epsilon Bootis is easy to spot along the eastern side of the Herdsman shining at magnitude 2.5. In 1782, Epsilon Bootis was the object of his investigations for stellar parallax, though they were unsuccessful. www.munisingwebsites.com /lookum/springtour.html   (3050 words)

33 Doubles in Hydra: Epsilon Hydrae Hydra was not high enough in the sky during the early evening so time was spent in Orion viewing the sights. The weather was very mild to observe and the only downside was that some farmer nearby had sold off some of his bigger calves and the cows were bawling the whole night looking for their offspring but that is life on the farm. I split Epsilon Hya with my C-8 in the early 1990's and noted in my logs that the primary was Yellow, the companion greenish-white, and the third star undetermined. www.carbonar.es /s33/Hydra/Epsilon.html   (2384 words)

Hydra   (Site not responding. Last check: 2007-11-03) Even though it is rather weak, Hydra is the biggest constellation of the sky, which extends for well seven hours of right ascension. The most evident part is a small group of stars that draw the head and that are on the border with Cancer, to the south-west of Leo: from there, the tail stretches toward Centaurus, finally touching Libra. Remarkable is also epsilon Hydrae, a double composed by a yellow star and a blue star, respectively of third and seventh magnitude. www.astrofilitrentini.it /mat/costell/hya_e.html   (191 words)

A Sampling of Planetaries One of the brightest planetary nebulae I've viewed is NGC 3242, or the Ghost of Jupiter in Hydra. About half the size and brightness of the planet for which it is named, this target can be seen even in small telescopes. Returning to Hydra, there is a planetary known as The Southern Owl Nebula. ephemeris.sjaa.net /0404/g.html   (741 words)

Untitled Document In the story of Heracles and the Twelve Labors, the warrior had a great battle with the monster Hydra. The giant crab tried to help Hydra, but Heracles smashed it with his foot. In Greek mythology, Hercules slew Hydra, a horrible serpent with many heads that grew back as soon as they were cut off. members.chello.nl /~m.walstijn/dokumenten/constellations3.htm   (1228 words)

Art Russell's Monthly Messier Star-Hop; June #2 From Gamma Hydrae, locate the star Pi Hydrae which is about 11 degrees east-southeast of Gamma Hydrae. The distance from both Gamma and Pi Hydrae to M83 is about 7 degrees in each case, or about the distance spanned by 4 fingers held against the sky. Starting at Pi Hydrae, look east about 30 degrees, or twice the distance spanned by your index and little fingers to find the prominent red-yellow supergiant star Antares, Alpha Scorpii ("The Rival of Mars, "or "The Heart of the Scorpion"). education.gsu.edu /spehar/focus/astronomy/star-hop/Monthly/msh06-2.htm   (972 words)

Mythology It is located between the stars which form the western side of the Keystone. Many other constellations, like Leo, the Lion, Hydra, the nine-headed Serpent, and Draco, the Dragon, were unfortunate victims of Hercules, and thus were also placed in the sky. Cancer, the Crab was sent by Hera to annoy Hercules in his battles, and became yet another victim of the hero. www.astro-tom.com /getting_started/mythology.htm   (5050 words)

Star Trek Dimension - Star Trek Cartography With its almost 800 light years distance, the real star Rigel has often been quoted as too far away from Earth to be indeed the central star of the important Star Trek system (mentioned in more than a dozen episodes!). In contrast to 40 Eridani/Vulcan, the fandom assignations for Andor and Tellar, Epsilon Indi and 61 On contrary, Epsilon Indi as Andorian home sun is quite unlikely given that this system was mentioned twice in Trek without any hint regarding its alleged prominent inhabitants. www.stdimension.org /int/Cartography/DistanceList.htm   (1031 words)

Zeta Hydrae   (Site not responding. Last check: 2007-11-03) Zeta Hydrae is an orange giant (seven to ten times the size of the Sun) which forms the top of the neck of the Hydra, and is the brightest star in the asterism known as The Hydra's Head. From amongst this group of stars epsilon Hydrae is the most remarkable, as it is a splendid multiple binary. Companion B is much too close for all but the largest of telescopes, for it has a very rapid orbit of 15.06 years. www.dibonsmith.com /hya_z.htm   (137 words)

CAOSP articles, Volume: 16, year: 1987   (Site not responding. Last check: 2007-11-03) Author(s): Bakos, G. A.; Tremko, J. Title: Spectroscopic orbital elements and photometry of the multiple system epsilon Hydrae. Author(s): Kulcar, L. Title: Large-scale changes in the intensity of the green corona and their reflection in the solar wind particle flux. Author(s): Chochol, D.; Ziznovsky, J. Title: Photoelectric photometry of the eclipse of epsilon Aurigae. www.ta3.sk /caosp/Eedition/Abstracts/1987/Vol_16   (153 words)

[No title] Hercules brought his nephew R Hydrae ­ This was the Iolaus to assist him in the task third long period variable to In ancient Mesopotamia, it of killing the Hydra. This is a located in the tail of Hydra bright, large, slightly NGC5101. This is a and is very bright (8.5), large e l o n g a t e d g a l a x y o f bright, s m a l l, and elongated. amateurastronomy.org /EH/Jan00.txt   (2107 words)

The First Known Variable Stars According to G.D. Roth, the number of known variable stars has developed as follows: 12 by 1786, 18 by 1844, 175 by 1890, 393 by 1896, 4,000 by 1912, 22,650 by 1970, and 28,450 by 1983. As Hoffmeister states, of the 18 variables "known" in 1844, a list which had been published by F.W. Argelander, two (Alpha Cassiopeiae and Alpha Hydrae) are actually not variable, while Argelander had missed R Cancri (also). The most reliable reference, however, is probably Isles, who has researched at least two variables (i Bootis B and Epsilon Aurigae) which had been neglected by the other references. www.seds.org /~spider/spider/Vars/vars.html   (642 words)

CD-32 8179 / HR 4458 / Gl 432 AB The CD-32 8179 binary system is located about 31.1 light-years (ly) away from our Sol, in the south central edge (11:34:29.5-32:49:52.8, ICRS 2000.0) of Constellation Hydra, the Water Serpent -- southwest of Xi Hydrae, west of Beta Hydrae, and southeast of Chi1 Hydrae. One involved an enormous water snake with nine heads that was killed by Hercules with the help of the Goddess Athena. Another referred to a water serpent brought by a pet Raven sent by the God Apollo for water, which the hungry Raven falsely claimed to have been attacked when it actually was delayed in waiting for a meal of ripening figs; both were flung into the Heavens by the angry God. members.nova.org /~sol/solcom/stars/hr4458ab.htm   (829 words)

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