The main focus for this question is Apophis Table 1- Data for Earth and Your Chosen Object:

	Earth	Object Name:_Apophis_____________
Orbital Period	365.25 days	324 days
Average Orbital Speed	29.78 km/sec	30.73 km/s
Average Distance from Sun (Semi Major Axis)	1.50 x 10 ^8 km 1 AU	38, 012 km
Perihelion	1.47 x 10 ^8 km	0.75 AU
Aphelion	1.52 x 10 ^8 km	1.1 AU
Major Axis Length	2 AU	1.58 AU
Mass	5.97 1024 kilograms	4.61010 kg

Part 2: Calculations

Calculate the orbital speed of the object based on the average orbital period and average distance from the Sun.

Do this by using the formula v = 2 rT where r is the distance from the sun and T is the average orbital period.

Show your calculations below:

Compare and contrast your calculated value to published orbital speeds of the object. Explain why there is a range for orbital speeds of the object, using scientific concepts.

Part 3: Modeling the System (Developing Models, ESS1.B, PS2.B)

Create a model that confirms Kepler's Laws of Planetary Motion, accurately explains and predicts the orbital path and duration of your object around the Sun, and the Earth around the Sun. Your model must include the following:

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