0. The Sun
Overview 
Mass(kg) 1.99130 Radious(km) 695,950 Radious(km) 695,950 Density(gm.cm3) 1.410 Rotation Period(Days) 24.66 Temperature(K) 5800 Composition 70% H,28% He,2% else The Sun is the largest object of Solar System. It contains more than 99.8% of the total mass of the Solar System. It is often said that the Sun is an "ordinary" star. That's true in the sense that there are many others similar to it. But there are many more smaller stars than larger ones; the Sun is in the top 10% by mass. The median size of stars in our galaxy is probably less than half the mass of the Sun. The Sun is about 4.5 billion years old. Since its birth it has used up about half of the hydrogen in its core. It will continue to radiate "peacefully" for another 5 billion years or so (although its luminosity will approximately double in that time). But eventually it will run out of hydrogen fuel. It will then be forced into radical changes which, though commonplace by stellar standards, will result in the total destruction of the Earth.
1. Mercury
Overview 
Mass(kg) 3.18123 Radious(km) 2,433 Density(gm.cm3) 5.431 Rotation Period(Days) 58.82 Temperature (K) 90 to 700 Composition 42% O2, 29.0% Na, 22.0% H, 6.0% He, 0.5% K Mercury is the closest planet to the Sun and the eighth largest.Since it is closer to the Sun than the Earth, the illumination of Mercury's disk varies when viewed with a telescope from our perspective.Mercury has a small magnetic field whose strength is about 1% of Earth's. Mercury has no known satellites.
2. Venus
Overview 
Mass(kg) 4.88324 Radious(km) 6,053 Density(gm.cm3) 5.256 Rotation Period(Days) 244.59 Temperature (C) -220 to 420 Composition 96.5% CO2, 3.5% N Venus is the second planet from the Sun, after the Moon, it is the brightest natural object in the night sky.Venus has no magnetic field, perhaps because of its slow rotation.Venus is usually visible with the unaided eye. Sometimes (inaccurately) referred to as the "morning star" or the "evening star", it is by far the brightest "star" in the sky.
3. Earth
Overview 
Mass(kg) Mass(kg):5.97924 Radious(km) 6,371 Density(gm.cm3) 5.431 Rotation Period(Days 1 Temperature (C) -82 to 70.7 Composition 34.6% Fe,29.5% O,15.2% Si,12.7% Mg No. of Moons 1 Earth is the third planet from the Sun, and the densest and fifth-largest of the eight planets in the Solar System. It is also the largest of the Solar System's terrestrial planet. It is sometimes referred to as the world or the Blue Planet.
4. Mars
Overview 
Mass(kg) 6.41823 Radious(km) 3,380 Density(gm.cm3) 3.907 Rotation Period(Days) 1.03 Temperature (C) -60 Composition 95.3% CO2,2.7%N No. of Moons 2 Mars (Greek: Ares) is the god of War. The planet probably got this name due to its red color; Mars is sometimes referred to as the Red Planet.When it is in the nighttime sky, Mars is easily visible with the unaided eye. Mars is a difficult but rewarding target for an amateur telescope though only for the three or four months each martian year when it is closest to Earth. Its apparent size and brightness varies greatly according to its relative position to the Earth.
5. Jupiter
Overview 
Mass(kg) 1.90127 Radious(km) 69,758 Density(gm.cm3) 1.337 Rotation Period(Days) 0.41 Temperature (C) -145 Composition 89% H,10% He No. of Moons 67 Jupiter is the fourth brightest object in the sky (after the Sun, the Moon and Venus). It has been known since prehistoric times as a bright "wandering star". Jupiter's mass is 2.5 times that of all the other planets in the Solar System combined—this is so massive that its barycenter with the Sun lies above the Sun's surface at 1.068 solar radii from the Sun's center. When it is in the nighttime sky, Jupiter is often the brightest "star" in the sky (it is second only to Venus, which is seldom visible in a dark sky). The four Galilean moons are easily visible with binoculars; a few bands and the Great Red Spot can be seen with a small astronomical telescope.
6. Saturn
Overview 
Mass(kg) 5.68428 Radious(km) 58,219 Density(gm.cm3) 0.688 Rotation Period(Days) 0.43 Temperature (C) -178 Composition 75% H,25% He No. of Moons 53 :
Saturn is the sixth planet from the Sun and the second largest planet in the Solar System, after Jupiter. Named after the Roman god of agriculture, Saturn, its astronomical symbol (♄) represents the god's sickle. Saturn is a gas giant with an average radius about nine times that of Earth Saturn is termed a gas giant, but it is not entirely gaseous. The planet primarily consists of hydrogen, which becomes a non-ideal liquid when the density is above 0.01 g/cm3. This density is reached at a radius containing 99.9% of Saturn's mass. Saturn has 53 named satellites (as of spring 2010) When it is in the nighttime sky, Saturn is easily visible to the unaided eye. Though it is not nearly as bright as Jupiter, it is easy to identify as a planet because it doesn't "twinkle" like the stars do. The rings and the larger satellites are visible with a small astronomical telescope.
7. Uranus
Overview 
Mass(kg) 8.68225 Radious(km) 23,470 Density(gm.cm3) 1.603 Rotation Period(Days) 0.45 Temperature (C) -224 Composition 83%H,15%He,2%CH4 No. of Moons 27 Uranus is the seventh planet from the Sun and the third largest (by diameter). Uranus is larger in diameter but smaller in mass than Neptune. Uranus, the first planet discovered in modern times, was discovered by William Herschel while systematically searching the sky with his telescope on March 13, 1781. Uranus is sometimes just barely visible with the unaided eye on a very clear night; it is fairly easy to spot with binoculars (if you know exactly where to look). A small astronomical telescope will show a small disk.
8. Neptune
Overview 
Mass(kg) 1.02726 Radious(km) 22,716 Density(gm.cm3) 2.272 Rotation Period(Days) 0.66 Temperature (C) 200 Compositions 80% H,19% He No. of Moons 13 Neptune is the eighth and farthest planet from the Sun in the Solar System. It is the fourth-largest planet by diameter and the third-largest by mass. Among the gaseous planets in the solar system, Neptune is the most dense. Neptune is 17 times the mass of Earth and is slightly more massive than its near-twin Uranus, which is 15 times the mass of Earth but not as dense. Neptune's blue color is largely the result of absorption of red light by methane in the atmosphere but there is some additional as-yet-unidentified chromophore which gives the clouds their rich blue tint. Neptune's magnetic field is, like Uranus', oddly oriented and probably generated by motions of conductive material (probably water) in its middle layers.Neptune can be seen with binoculars (if you know exactly where to look) but a large telescope is needed to see anything other than a tiny disk.
9. Pluto
Overview 
Mass(kg) 1.0824 Radious(km) 5,700 Density(gm.cm3) 1.65 Rotation Period(Days) 6.41 Temperature (C) -229 to -380 Composition N2, CH4, CO No. of Moons 1 Pluto orbits beyond the orbit of Neptune (usually). It is much smaller than any of the official planets and now classified as a "dwarf planet". Pluto is smaller than seven of the solar system's moons. In Roman mythology, Pluto (Greek: Hades) is the god of the underworld.luto is the second most contrasty body in the Solar System (after Iapetus)Little is known about Pluto's atmosphere, but it probably consists primarily of nitrogen with some carbon monoxide and methane. It is extremely tenuous, the surface pressure being only a few microbars. Pluto can be seen with an amateur telescope but it is not easy.
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