Tolomeo , astronomer & Greek mathematician, in the Almagesto, described 48 constellations, of which, 47 are continued knowing by the same name.

System of Tolomeo     In century II a.C., Claudius Tolomeo raised a model of the Universe with the Earth in the center. In the model, the Earth she remains stationary while the planets, the Moon & the Sun describe complicated orbits around her. Apparently, to Tolomeo it worried to him that the model worked from the mathematical point of view, & not as much that described the planetary movement accurately. Although later its incorrección was demonstrated, the model of Tolomeo was accepted during several centuries. Mary Evans Picture Library/Photo Researchers, Inc..

         In the antiquity , many other towns grouped stars in constellations, although its disposition does not correspond with those of the old West. However, some Chinese constellations are looked like the western ones, indicating the possibility of a common origin.

       At the end of century XVI, the first European explorers of the seas of the South drew up maps of the austral hemisphere. The Dutch navigator Pieter Dirckz Keyser, who participated in the exploration of the Eastern Indians in 1595 added new constellations. Later they were added to other constellations of the South hemisphere by the German astronomer Johann Bayer -- who published the first extensive celestial atlas of the western world: Uranometría --, by Hevelius & the French astronomer Nicolas Louis of the Caille. Many others proposed new constellations, but the astronomers finally decided a list 88. However, the limits of the constellations continued being discussion subject until 1930, when the Astronomical Union the International fixed these limits.

       In order to designate approximately 1,300 shining stars, the genitive of the name of the constellations is used, preceded by a Greek letter; this system was introduced by Johann Bayer.

        For example, the famous star Algol, in the Perseo constellation is named by b Persei.

Discovered to date

        Next one indicates the exact dates of the day of descubrimento of the visible constellations from a latitude of +40º, that are visible from the island of Majorca, Spain & all discovered there ordered per dates.

        The rest of constellations that are very to the south, & therefore, inferior to a declination of -50º & hair nets from Majorca Spain. They are pending of which it can discover them in a trip to the seas of the south. (Dream of the author).

        The indicated ones with * indicate that it leaves from them are visible from Majorca, Spain but not all the structure.

        It exists another format in the Web with these dates & others of different objects from the Solar System, characterized by calendar.  In addition an ample information of each one of them, its mythology, history, characteristics and observations by telescope made exists to date that podeis to visit in a the Web.

Constellations Andromeda Antlia Apus Aquarius Aquila Ara Aries Auriga Bootes Caelum Camelopardalis Cancer Canis Major Canis Minor Canes Venatici Capricornius Carina Cassiopea Centaurus Cepheus Cetus Chamaleon Circinus Columba Coma Berenice Corona Australis Corona Borealis Corvus Crater Crux Cygnus Delphinus Dorado Draco Equuleus Eridianus Fornax Gemini Grus Hercules Horologium Hydra Hydrus Indus Lacerta Leo Leo Minor Lepus Libra Lupus Lynx Lyra Mensa Microscopium Monoceros Musca Norma Octans Ophiuchus Orion Pavus Pegasus Perseus Phoenix Pictor Piscis Piscis Austrinus Puppis Pyxis Reticulum Sagitta Sagittarius Scorpius Scultor Scutum Serpens Caput Serpens Cauda Sextans Taurus Telescopium Triangulum Triangulum Australe Tucana Ursa Major Ursa Minor Vela Virgo Volans Vulpecula

        It exists on my web celestial charts pointed at next coordenates to find them any constellations at celestial sphere with theirs names of stars, more importants, & the international limits of each one constellations that they are accepted by I.A.U.   

      Celestial charts R.A.:00 Dec.:+90 R.A.:00 Dec.:+45 R.A.:00 Dec.:+00 R.A.:00 Dec.:-45 R.A.:00 Dec.:-90 R.A.:06 Dec.:+45 R.A.:06 Dec.:+00 R.A.:06 Dec.:-45 R.A.:12 Dec.:+45 R.A.:12 Dec.:+00 R.A.:12 Dec.:-45 R.A.:18 Dec.:+45 R.A.:18 Dec.:+00 R.A.: 18 Dec.:-45

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 Masm © (Last update 01.31.2004)