The asteroid Preparation-A has an orbital eccentricity 0.19, and an orbital period 7.78. What is the greatest distance from the Sun that this asteroid experiences? [Enter answer in AU]
An undiscovered planet in our solar system sits at superior conjunction every 1.31 years. What is the semi-major axis of this planet (in AU)?
Consider a (fictional) space station which orbits the Earth. The size of the station's orbit is 76% of the Moon's. What is the orbital period of this space station?
You are traveling to the space station mentioned in the previous question. You have reached a distance of 151,000 from the Earth's centre and you look back towards the planet. How big does it appear? [answer in arcmin]
If a star rises at 4 am tonight, at approximately what hour will it set 3 months from now? [for 'units' put either am or pm]