Exo-planets

Size Most Exo-planets are smaller than earth A common Exo-planet is around one-twelfth the size of earth (1,250-1,800 km in diameter) This is also about half the size of Pluto Sedna 1,300-1,600 km in diameter Quaoar 1,250 km Pluto 2,302 km Moon 3,476 km Earth 12,756 km

Colors and Surface Features Exo-planets all have wide ranges of colors and surface features Sedna, a well known planet, is trans-Neptune and composed of many different elements It is one of the reddest planets Quaoar, another planet is a rocky trans-Neptune planet that is moderately red

Rotation and Revolution Again, Exo-planet revolutions and rotations vary Sedna a common exo-planet rotation is 10 hours, and its revolution is around 11,400 years The orbit of Sedna (red) set against the orbits of Jupiter (orange), Saturn (yellow), Uranus (green), Neptune (blue), and Pluto (purple)

Density Exo-planets vary in density Two common Planets, Sedna and Quaoar have densities that are very similar Sedna has a density of about 2.0 g/cm3 Quaoar has a density of 2.2 g/cm3 This is about ½ the density of Earth

Gravity Exo- Planets have ranges of gravity Sedna’s gravitational pull is about 0.27 m/s2 Quaoar’s gravitational pull is around 0.376m/s 2 Earth’s gravity is 9.78 m/s² In relation, you would practically fly on Sedna and Quaoar, since there pull is 1/10 that of Earth’s

Atmospheric Composition Atmospheres on exo-planets can vary often Sedna, a common exo-planet does not have an atmosphere, but might contain one someday Quaoar, another example, also does not contain a known atmosphere Both may one day posses an atmosphere due to elements present Interpretation of the view of the sun form Sedna

Interpretation of Quaoar’s surface Surface Composition Most exo-planets surfaces are rocky and terrestrial Due to limits on space technology there are limits on what we know about the surface composition of exo-planets Interpretation of Quaoar’s surface

Interior Composition A majority of exo-planet interior’s are composed of ice-like materials, and a solid, rocky core Quaoar’s Interior

Magnetic Field Again, detecting the magnetic fields of exo- planets around us is highly complicated So far no magnetic fields have successfully been proven as detecting them is very complex All exo-planets are thought to have a magnetic field

Weywot, Quaror’s moon, is theorized to appear like so Moons Variation in the amounts of moons is common in exo-planets Sedna, for example, has no known moons Quaoar, has one moon, called Weywot, its revolution is around 12.9 days and has an equatorial diameter of about 85 km Weywot, Quaror’s moon, is theorized to appear like so

Unique Features of Exo-planets Exo- means outside There are over 200 known exo-planets Exoplanet: a planet that orbits the sun outside Pluto or another star Exo-planet 51 Pegasi B, one of the first discovered exo-planets

Exoplanets Size: Usually smaller than Earth Sedna: 1,300-1,600 km Quaoar: 1,250 km Color/Surface Features: wide range……commonly red Rotation: Sedna: 10hours Revolution: Sedna: 11,400 years Density: about ½ of earth’s density Gravity: most are 1/10 that of earth Atmospheric Composition: Little to no atmosphere Surface Composition: Rocky terrestrial surface, probably icy Interior Composition: Unverified, probably icy mantle, rocky solid core Magnetic Field: all exo-planets thought to have a magnetic field Moons: None to many Sedna: None Quaoar: 1/Weywot/85km diameter Unique Features: over 200 known exo-planets