Post a New Question

astronomy

posted by .

Observations with the Hubble Space Telescope revealed a planet about 16 AU from a star whose mass is the same as our Sun’s mass. How long does it take the planet to orbit the star?

  • astronomy -

    Since the star's mass equals that of the sun, you can use the same form of Kepler's third law that applies to our solar system.

    P^2 = a^3

    In the above formula, P is the period in years and a is the distance from the star in a.u.

    See http://spiff.rit.edu/classes/phys440/lectures/kepler3/kepler3.html
    for more about the law

    P^2 = (16)^3 = 4096
    P = 64 years

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Astronomy

    Suppose that, in the future, observations with some new telescope reveal a planet about 16 AU from a star whose mass is the same as our sun's mass. How long does it take the planet to orbit the star?
  2. physics

    Astonomers discover a new planet orbiting a fixed point in space, but for reasons unknown, they can't directly observe a star where one is expected. The radius of the orbit is measured to be 1.85 x 10^8 km, and the lone planet completes …
  3. Astronomy (algebra-based physics)

    Extrasolar planets There are currently 340 known extrasolar planets, i.e., planets around other suns. Most of them we infer only by their gravitational pull on their host stars, and a handful appear to dim the light of their host star …
  4. Astronomy

    Suppose that future observations with a new telescope reveal a planet about 16 AU from a star whose mass is the same size as our sun's. How long does it take the planet to orbit the star?
  5. physics

    Planets A and B orbit the same star. Planet B is four times further from the star than planet A and has twice the mass of planet A. The gravitational force of the star on planet B is ____ the force on planet A.
  6. college physics

    new planet is discovered orbiting a distant star. Observations have confirmed that the planet has a circular orbit with a radius of 21 AU and takes 118 days to orbit the star. Determine the mass of the star. State your answer with …
  7. Physics please HELP

    A planet A of mass m is in a circular orbit of radius "a" around a star ( M_star >> m ). Another planet B with the same mass m is in an elliptical orbit around the same star with its length of the semi-major axis equal to "a" …
  8. physics

    A planet A of mass m is in a circular orbit of radius "a" around a star ( M_star >> m ). Another planet B with the same mass m is in an elliptical orbit around the same star with its length of the semi-major axis equal to "a" …
  9. Ap physics 1

    The mass of a star in a galaxy far, far away, is 3.12 × 105 Earth masses, and the mean distance from the center of this star to the center of a planet with the same mass as our Earth is 2.46 × 108 km. Treating this planet and star …
  10. Physics

    The mass of a star in a galaxy far, far away, is 2.13 × 105 Earth masses, and the mean distance from the center of this star to the center of a planet with the same mass as our Earth is 7.87 × 108 km. Treating this planet and star …

More Similar Questions

Post a New Question