Informational Site NetworkInformational Site Network
Privacy
 
      Home - Stars - Amateur Astronomy

Most Viewed

- The Constellations Of Spring.

- Hercules (her´-kū-lēz)—the Kneeler.

- Ursa Minor (er´-sa Mi´-nor)—the Little Bear. (face North.)

- Ursa Major (er´sa Mā´-jor)—the Great Bear. (face North.)

- Cetus (sē´-tus)—the Whale. (face Southeast.)

- Corvus (kôr´-vus)—the Crow. (face South.)

- Leo (le´o)—the Lion. (face South.)

- Auriga (â-ri´-ga)—the Charioteer. (face Northwest.)

- The Diagrams.

- Coma Berenices (kō´-ma Ber-e-ni´-sez)—berenice's Hair.

- The Constellations Of Autumn.

- Andromeda (an-drom´-e-dä)—the Chained Lady.

- Scorpius (skôr´-pi-us)—the Scorpion. (face South.)

- Aquarius (a-kwā´ri-us)—the Water Carrier. (face Southwest.)

- Ophiuchus (of-i-ū-kus)—the Serpent Bearer, And Serpens. (face Southwest.)


draco (drā´-ko)—the Dragon. (face North.)








Location.—About 10° from α Ursæ Majoris—from α to δ is 10°—slightly south of, that is above, the line from α to Polaris, is Giansar, λ in the tip of the Dragon's tail. Above λ, and almost in line with it, are two more stars in Draco, which form with two stars in Ursa Major a quadrilateral. (See diagram.) Draco now curves sharply eastward, coiling about the Little Bear as shown, then turns abruptly southerly, ending in a characteristic and clearly defined group of four stars, forming an irregular square, representing the Dragon's head. This group is almost overhead in the early evening in summer. The star in the heel of Hercules lies just south of the Dragon's head. The brilliant Vega will be seen about overhead, 12° southwest of the Dragon's head. Eltanin, one of the Dragon's eyes, is noted for its connection with the discovery of the law of aberration of light. It is of an orange hue, while the star β, near it, is white. Note Thuban, once the Pole Star, at one corner of a quadrilateral that Draco forms with Ursa Major.


Thuban could be seen by day or night from the bottom of the central passage of several of the Pyramids in Egypt.


The rising of Eltanin was visible about thirty-five hundred years b.c. through the central passages of the temples of Hathor at Denderah. The Egyptians called Draco "The Hippopotamus."


Vega and the four stars in the Dragon's head offer an opportunity to compare the first five stellar magnitudes with which all should be familiar.


DRACO DRACO









Next:

lyra (lī´-ra)—the Lyre.



Previous:

the Constellations Of Summer.





Add to del.icio.us Add to Reddit Add to Digg Add to Del.icio.us Add to Google Add to Twitter Add to Stumble Upon
Add to Informational Site Network
Report
Privacy
SHAREADD TO EBOOK


Viewed 2733