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Solar System Cheat Sheet (DRAFT) by

This is a draft cheat sheet. It is a work in progress and is not finished yet.

Defini­tions

Periapsis is the closest and Apoapsis is farthest. Eccent­ricity shape of an orbit, 0 is a perfect circle. Asthen­osphere is upper mantle, below lithos­phere. Lithos­phere is crust and uppermost mantle.

Geologic Formations

Highland continents: areas of unstable terrain with high peaks and valleys on Mercury, Venus, The Moon, and Mars. Escarp­ments: steep slopes­/long cliffs that form because of vertical movement along a fault line. On Mercury. Dorsa (Winkle Ridges): low ridges, can extend for several hundred km. On Mercury, the Moon, and Mars. Mercury: when basaltic lava cools and contracts. Mars: due to compre­ssion stress in crust which caused a crack. One side then pushed on top of the other.

Geologic Formations 2

Pancake volcanoes (Farra) on Venus, near highly deformed terrain, look like shallow impact craters raised above the surface, and form from one large slow eruption of silica rich lava. Arachnoids features on Venus resembling spider webs. Several ovals surrounded by cracks Corona is an oval shaped volcanic surface feature on Venus. Formed when rising hot material pushes the material into a dome shape then collapses due to magma leakage to the sides. Caldera depres­sions formed after evacuation of magma from underneath a volcano.
 

Deimos

Rotational Period 30.4 hours. Semimajor Axis 23460 KM. Diameter 12 km. Orbital Period 1.263 days. Regolith 50m thick. Escape velocity 5.6 m/s. Apparent magnitude 12.45. Albedo 0.071. Misc. Is likely Deimos was an asteroid then Mars' gravit­ational field pulled it into orbit. Two craters have been named Swift and Voltaire both 3000m across. Named after writers that predicted existence of Martian moons. Orbit is circular and close to Mars’ equatorial plane. At a full moon would be bright as Venus. Discovered on 8/12/1877 by Asaph Hall. Named after greek figure Deimos, brother of Phobos, person­ified terror. Deimos translates to dread. Look Bit of a red hue. Would of been a sphere but chunk is missing on the bottom and top right
 

10 Hygeia

Diameter: 276 Miles. Mass:8.67 × 10^19 kg. 2.9% of mass of belt. Orbital Period: 2034.3 days. Eccent­ricity 0.1146 Aphelion: 3.5024 AU Perihelion: 2.7817 AU Inclin­ation: 3.8377° Albedo: 0.0717 Misc. 4th largest object in belt by volume and mass. Largest C-type asteroid. Discovered April 12 1849: Annibale de Gasparis. Visual Oblong sphere. Grey color with lines running across the surface. Most craters on one side.