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  • Publicado : 16 de febrero de 2012
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Venus planet

It has:

Inclination

3,39471°

Eccentricity

0,00677323

Sidereal orbital period 224,701 days



Synodic orbital period 583,92 days

Orbital speed average 35,0214 km/s

Middle 0,72333199 UA radio orbital

108.208.930 km



Satellites

0

Physical characteristics

Mass

4,869 × 1024 kg



Density

5.24 g/cm³

Area of 4.60 × 108 km²



Diameter

12.103,6 km

Gravity

8,87 m/s²Escape velocity

10.36 km/s

Rotation period

-243,0187 days

[retrograde movement (in sense of the clockwise viewed from the North Pole)]

Axial tilt

2,64°

Albedo

0,65

Atmospheric characteristics

Pressure

9321,9 kPa (92 atm)



Temperature

Minimum ** 228 K - 45.15 ° C



Average 737 K 463,85 ° C



773 K 499,85 ° C maximum



** Regarding the temperature above clouds.

CompositionCarbon dioxide

96%

Nitrogen

3%

Sulphur dioxide

0,015%

Water steam

0,002%

Carbon monoxide

0,0017%

Argon

0,007%

Helium

0,0012%

Neon

0,0007%

Carbon disulfide

Traces

Hydrogen chloride

Traces

Hydrogen fluoride

Traces



(1) Concept:

Venus is the second planet of the Solar system in order of distance from the Sun, and the third in size, from minor to major. It is named in honor ofVenus, the Roman goddess of love. It is a planet of rock and Earth, type often called Planet Earth brother, since both are similar in size, mass and composition, although completely different in thermal and atmospheric issues. Venus's orbit is an ellipse with an eccentricity of less than 1%, forming the most circular orbit of the planets; barely exceeds that of Neptune. Its atmospheric pressureis 94 times greater than the Earth; It is therefore more atmospheric pressure of all the Rocky planets. Despite being closer to the Sun mercury, Venus has the hottest atmosphere, this therefore traps more heat from the Sun. This planet also has the longest day of the solar system: 243 Earth days, and its motion is retrograde, so a Venusian day the sun rises in the West and lies to the East.

FindVenus closer to the Sun the Earth, always can be, approximately, in the same direction of the Sun (its greatest elongation is 47.8 °), so from the earth you can see only a few hours before the Sunrise, in a few months of the year, or after the sunset, in the rest of the year. However, when Venus is brighter, it can be seen during the day, being one of three unique celestial bodies that can be seenday to simple view, in addition to the Moon and the Sun. Venus is usually known as the star of tomorrow (Lucero of the Alba) or the star of the evening (evening Lucero) and, when it is visible in the night sky, is the second brightest object in the night sky after the moon.

For this reason, Venus had already known since prehistoric times. Their movements in the sky were known by the majority ofthe ancient civilizations, become important in almost all astrological interpretations of planetary motion. In particular, the maya civilization developed a religious calendar based on the cycles of astronomical, including cycles of Venus. The symbol of the planet Venus is a stylized representation of the goddess Venus mirror: a circle with a small cross underneath, also used today to denote thefeminine sex.

The venusians-a, venusino-a and Venereum-a. adjectives (poetically) are used to denote the characteristics usually attributed to Venus-Afrodita. The Venereum adjective often associated with sexually transmitted diseases. It is the only planet in the Solar system with female name, apart from two of the dwarf planets, Ceres and Eris with Earth (Goddess Gaia of antiquity).



(2)Orbital characteristics:

(a) orbit:

Although all planetary orbits are elliptical, Venus's orbit is the most similar to a circle, with an eccentricity of less than 1%.

Cycle between two maximum elongations (Synodic orbital period) lasts 584 days. After those 584 days Venus appears in a position to 72 ° of previous stretching. Given that there are 5 periods of 72 ° in a circle, Venus returns to the...
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