The shape of Hydra resembles a twisting snake, and features as such in some Greek myths. One myth associates it with a water snake that a crow served Apollo in a cup when it was sent to fetch water; Apollo saw through the fraud, and angrily…
It is visible to the naked eye with an apparent visual magnitude of 4.48. The estimated distance to this star from the Sun, based upon an annual parallax shift of 8.75 mas, is around 370 light-years. There is no cluster in the position indicated by Messier. The value that he gave for the right ascension matches that of NGC 2548, however, his declination is off by five degrees. Credit for discovery is sometimes given instead to Caroline… b Massarotti, Alessandro; et al. (January 2008), "Rotational and Radial Velocities for a Sample of 761 Hipparcos Giants and the Role of Binarity", The Astronomical Journal, 135 (1): 209–231, Bibcode:2008AJ. ^ (in Chinese) 中國星座神話, written by 陳久金. Published by 台灣書房出版有限公司, 2005, ISBN 978-986-7332-25-7. Iota Hydrae (ι Hydrae, abbreviated Iota Hya, ι Hya), formally named Ukdah / ˈ ʌ k d ə/, is a star in the constellation of Hydra, about 8° to the north-northwest of Alphard (Alpha Hydrae) and just to the south of the celestial equator.
630 number pattern Order Red 11-Golden Pattern 1 1 1 2 3 4 2 7 8 9 10 3 4 13 14 15 16 4 1 19 20 21 22 5 25 26 27 28 6 4 31 32 33 34 7 1 37 38 39 40 8 7 43 44 45 46 9 49 50 51 52 10 55 56 57 58 11 7 61 62 63 64 12 4 67 68 69 70 13 1 73 74 75… The shape of Hydra resembles a twisting snake, and features as such in some Greek myths. One myth associates it with a water snake that a crow served Apollo in a cup when it was sent to fetch water; Apollo saw through the fraud, and angrily… As an elliptical galaxy, Messier 49 has the physical form of a radio galaxy, but it only has the radio emission of a normal galaxy. It is a single giant star, cooler than the sun but larger and more luminous. It is about 177 light years away. NGC 3109 is a small barred Magellanic type spiral or irregular galaxy around 4.34 Mly away in the direction of the constellation of Hydra.
630 number pattern Order Red 11-Golden Pattern 1 1 1 2 3 4 2 7 8 9 10 3 4 13 14 15 16 4 1 19 20 21 22 5 25 26 27 28 6 4 31 32 33 34 7 1 37 38 39 40 8 7 43 44 45 46 9 49 50 51 52 10 55 56 57 58 11 7 61 62 63 64 12 4 67 68 69 70 13 1 73 74 75… The shape of Hydra resembles a twisting snake, and features as such in some Greek myths. One myth associates it with a water snake that a crow served Apollo in a cup when it was sent to fetch water; Apollo saw through the fraud, and angrily… As an elliptical galaxy, Messier 49 has the physical form of a radio galaxy, but it only has the radio emission of a normal galaxy. It is a single giant star, cooler than the sun but larger and more luminous. It is about 177 light years away. NGC 3109 is a small barred Magellanic type spiral or irregular galaxy around 4.34 Mly away in the direction of the constellation of Hydra. Messier 84 or M84, also known as NGC 4374, is an elliptical or lenticular galaxy in the constellation Virgo. Charles Messier discovered Messier 84 on 18 March 1781 in a systematic search for "nebulous objects" in the night sky. Messier 68 (also known as M68 or NGC 4590) is a globular cluster in the equatorial constellation Hydra. It was discovered by Charles Messier in 1780. William Herschel described it as "a beautiful cluster of stars, extremely rich, and so…
zažil, můžete se těšit na jeho strašidelné historky s bubáky, strašáky, proradnými můrami a tajemnými povozy, při jejichž čtení se budete i trochu bát. 17×24 cm, pevná vazba, 64 stran, 198 Kč, 8,32 �, ISBN 978-80-271-0081-1 It is rotating rapidly with a projected rotational velocity of 19 km s−1. It has an X-ray luminosity of 2.8 × 1029 erg s−1. With an apparent visual magnitude of 4.3, it is visible to the naked eye. However, it is the faintest of the five stars that form the "head" of the hydra. Based upon an annual parallax shift of 5.56 mas, it is located roughly 590 light years… The inner layers of the nebula were formed some 1,500 years ago. The two ends of the nebula are marked by Fliers, lobes of fast moving gas often tinted red in false-color pictures. It is visible to the naked eye with an apparent visual magnitude of 4.48. The estimated distance to this star from the Sun, based upon an annual parallax shift of 8.75 mas, is around 370 light-years. There is no cluster in the position indicated by Messier. The value that he gave for the right ascension matches that of NGC 2548, however, his declination is off by five degrees. Credit for discovery is sometimes given instead to Caroline… b Massarotti, Alessandro; et al. (January 2008), "Rotational and Radial Velocities for a Sample of 761 Hipparcos Giants and the Role of Binarity", The Astronomical Journal, 135 (1): 209–231, Bibcode:2008AJ.
It was later rediscovered by astronomer Guillaume Bigourdan on February 26, 1887. NGC 3312 was later listed and equated with IC 629 because the two objects share essentially the same celestial coordinates.
