The so-called “Planet Nine,” as scientists are calling it, is about 10 times the mass of Earth and 5,000 times the mass of Pluto. Here’s the order of the planets, starting nearest the sun and working outward through the solar system: Mercury, Venus, Earth, Mars,Jupiter, Saturn, Uranus, Neptune — and Planet Nine
(minor-planet designation: 134340 Pluto) is a dwarf planet in the Kuiper belt, a ring of bodies beyond Neptune. It was the first Kuiper belt object to be discovered.
Mercury is the smallest planet in the Solar System and the one closest to the Sun, with an orbital period of about 88 Earth days, which is much faster than any other planets in the solar system.
|Orbital period||87.969 1 d; 0.240 846 yr; 0.5 Month|
|Sidereal rotation period||58.646 d; 1407.5 h|
|Average orbital speed||47.362 km/s|
|Equatorial rotation velocity||10.892 km/h|
Venus is the second planet from the Sun, orbiting it every 224.7 Earth days. It has the longest rotation period of any planet in the Solar System and rotates in the opposite direction to most other planets. It has no natural satellite.
|Distance from Sun||108.0 million km|
|Mass||4.867 x 10^24 kg (0.815 M⊕)|
|Length of day||116d 18h 0m|
|Surface area||460.2 million km2|
|Orbit Period||225 days|
Earth is the third planet from the Sun, the densest planet in the Solar System, the largest of the Solar System’s four terrestrial planets.
|Surface pressure||101.325 kPa (at Mean Sea Level)
|Mean radius||6,371.0 km (3,958.8 mi)
|Surface gravity||9.807 m/s2 (32.18 ft/s2); (1 gram)|
|Mean density|| 5.514 g/cm3 (0.1992 lb/cu in)|
Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System, after Mercury. Named after the Roman god of war.
|Distance from sun||227.9 million km|
|Mass||6.39 × 10^23 kg (0.107 M⊕)|
|Surface Area||144.8 million km²|
Jupiter is the largest planet in the solar system. It is approximately 143,000 kilometers (about 89,000 miles) wide at its equator. Jupiter is so large that all of the solar system.
Saturn is the sixth planet from the Sun and the second largest. … Early observations of Saturn were complicated by the fact that the Earth passes through the plane of Saturn’s rings every few years as Saturn moves in its orbit. … Saturn’s rings remained unique in the known solar system .
|Distance from Sun||1.429 billion km|
|Mass||5.683 × 10^26 kg (95.16 M⊕)|
|Orbit Period||29 years|
Uranus is the seventh planet from the Sun. It has the third-largest planetary radius and fourth-largest planetary mass in the Solar System.
|Distance from Sun||2.877 billion km|
|Mass||8.681 x 10^25 kg (14.54 M⊕)|
Neptune is the eighth and farthest known planet from the Sun in the Solar System. It is the fourth-largest planet by diameter and the third-largest by mass. Among the giant planets in the Solar System, Neptune is the most dense.
|Distance from Sun||4.498 billion km|
|Mass||1.024 × 10^26 kg (17.15 M⊕)|
|Orbit Period||165 years|