V E N U S
CharacteristicsVenus is the second planet of our Solar System and also he is inner, it is to say is between the Sun and the Earth orbit . From our planet it is simpler to locate it and is spectacular observing it in the evening or before the dawn. The brightness that can reach Venus can arrive at magnitude 4.3 being able and everything if the night is closed after the twilight to make shade of any object. Its color is white purest and emphasizes on any star because the planets do not titilan and its light is fixed however, the one of stars when observing them is variable.
Venus I located it during month of April of 1980 when it had 12 years from the Majorcan locality of Inca (Majorca, Spain), for my it was important because it was the first planet that I located and therefore, I already began to discover constellations little by little and, the rest of planets. It had been two years of which I began to be become fond of to Astronomy and therefore, was for my whole a landmark discovering it, for that reason personally is to me still pleasing observing it each season the dawn or the dusk.
It began to buy first books of Astronomy and memory that when locating it and soon watching it with small prisms binocular discovering astonished to me that it presented/displayed phases like the Moon. Peculiarly the phases of Venus and also those of Mercury were discovered by Galileo astronomer who commented that they had to that when being between the Earth and the Sun never would be in opposition these planets and that when finding us we (the Earth) always behind would observe the illuminated phase of the planet in different positions based on the Earth position and of planets.
Venus is a planet that astonishes to you when you as much observe it at first as with prism binocular but it astonishes more to you when you read in the books that are a planet very similar to the Earth by their size but nothing else; it has a so dense atmosphere that there every day without the possibility on the part of the atmosphere that takes place what here we began to fear like effect conservatory, that is to say, higher temperatures the heat escapes to the outside that arrives from the Sun Has a so dense atmosphere that it is always covered with clouds and that the drops that fall is of sulfuric acid. The temperature that can reach in the surface is of anything less of 500ºC.
Second planet of the Solar System
Therefore, it is clear that it is not a good place to go to us to live, but even so everything, continues being spectacular observing during awhile Venus from our delicate planet.
There Venus has a diameter of 12,102 km very similar to the Earth of its similarity but it has a peculiar particularitity and it is that its day takes nothing else and nothing less than 243 days when the time that takes in giving a return to the Sun is of 225 days, that is to say, is longer its day than its year and in addition its movement is retrograde is to say the Sun leaves by the west and it is put by the east; really a world so different from ours and the other way around.
The cycle between two maximum elongaciones lasts 584 days. After those 584 Venus days it appears in a position to 72º of the previous elongación. Since there are 5 periods of 72º in a Venus circumference it returns to the same point of the sky every 8 years (less two days corresponding to the leap year years). This period was known like the Sothis cycle in Old Egypt.
Mitológicamente represented the goddess of the beauty, you can have more information of its mythology in the Web.
Once in a while, to the being an inner planet can locate between the Sun and we and happen of an apparent form through the solar disc. This phenomenon that is very rare to observe it produces respectively in cycles of 8 and 124 years. The first observation of the phenomenon was observed in 1639 and the next ones will take place the 5 of June of 2012, the 10 of December of 2117 and the 8 of December of 2125.
|Average Dist. of the Sun||0.723 UA|
|Average radio||108.200.000 km|
|Orbital period (sidereal)||224.7 days|
|Period of rotation||243 days|
|Orbital speed average||35,03 km/s|
|Inclination of the axis||177,3°|
|Number of satellites||0|
|Equatorial diameter||12,100 km|
|Average density||5,25 g/cm³|
|Superficial gravity||0.88 Earth|
|Speed of escape||4,25 km/s|
|Average Temp. superf.: Day||477 ºC|
|Average Temp. superf.: Night||-33 ºC|
In the page Web you can obtain more data of each one of our planets and the dwarf planets defined by the IAU of our Solar System.
Masm Last update 2006-10-20)