One of the brightest comets of the 20th century was Comet Hyakutake, which passed close to the sun in early 1996. The orbital period of this comet is estimated to be about 30,000 years. Find the semimajor axis of this comet’s orbit. Compare it to the average sun–Pluto distance and to the distance to Alpha Centauri, the nearest star to the sun, which is 4.3 light-years distant.

The asteroid Icarus has a perihelion distance of 0.19 AU, an orbital eccentricity of 0.83 and semi major axis of 1.12 AU. What is its aphelion distance from the Sun?

The Sun occupies an angle of approximately 0.5 degrees to us on Earth, at a distance of 150 million kilometers from the Sun. Given this information, calculate the Sun's radius.

SnowT is an exoplanet orbiting star 27 Kood.  If the planet’s orbital period is 3.75 days and 27 Kood's constant is 2.9X10^-19 s^2/m^3, what is SnowT orbital radius?

The distance from the sun to saturn is approximately

Until recently, the term "planet" had no clear-cut definition. In August of 2006, leading astronomers established new guidelines and declared that Pluto is no longer a planet. Which of the following is either false or least consistent with the new guidelines? Group of answer choices Pluto is by far the largest known object in the Kuiper belt, while Eris is the largest known object in the asteroid belt.   A planet must have cleared the neighborhood around its orbit.   Pluto is automatically disqualified from being a planet because its oblong orbit overlaps with Neptune's.   A planet must have sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a nearly round shape.   Pluto and the asteroid Ceres are both now classified as dwarf planets.

Calculate the length of R of the semimajor axis of a planet whose period is 118 years.

A large asteroid is discovered orbiting the Sun with a period of 8 years. What is its average distance from the Sun? (i.e. its semi-major axis)

What is the angular diameter of Saturn (in arc seconds) as seen from Earth when the two planets are farthest apart?

Calculate the length R of the semimajor axis of a planet whose period is 138 years.