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Why do all orbits with the same semi-major axis have the same period?
Wiki User
∙ 13y ago
As simple as Newton's equation of gravity looks, if you massage it long enough
with enough calculus and geometry, all of Kepler's laws fall out of it.
Those mathematical results include the facts that the planets have to travel in
elliptical orbits, with the sun at one focus, and that the number equal to
(square of the orbital period) divided by (cube of the semi-major axis)
has to be the same number for every object that orbits the sun.
Wiki User
∙ 13y ago
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Do all comets have the same orbital period?
No. At the extremity of a comet's orbit (farthest point from the sun) it is moving very slowly (for an interstellar object). But it cannot quite escape the sun's gravity, so it begins to fall back in toward the sun. It is accelerating constantly from that point on until it swings around the sun, when it is moving at it's fastest. Then, as it heads back out into space on it's orbit, it is slowly and steadily slowing down, and the whole cycle repeats.
Why is it possible for two satellites to circle the earth in orbits with identical period but different heights above the earths surface?
It is not, because the altitude of the orbit is related to the period. If two satellites have the same orbital period, then they have the same altitude.
Which of these occurs because the moon spins on its axis at the same rate it orbits the earth?
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What is the orbital period of an asteroid that has a semimajor axis of 2.8 au?
Even if we assume that the central mass is our sun, the question is still insufficient for an answer as just giving the semi-major axis isn't enough. We need to know the minor axis as well to calculate the eccentricity.
How long it take to Phobos rotate on its own axis?
Phobos is tidally locked; its rotational period and orbital period are the same (a little under 7 hours 40 minutes).
What is the semimajor axis of a circle of diameter 24 cm?
The major and minor axes of a circle are the same - either is any diameter. So a semimajor axis is half the diameter which is 12 cm.
The earth's axis never points to the same point in the heavens as it orbits the sun?
false
Which occurs when the moon spins on its axis at the same rate it orbits the earth?
The same side of the moon always faces the Earth
How does it take for the to rotate on its axis?
The moon has an axis, and as the moon orbits the Earth, it keeps the same face toward the earth. So the moon rotates on its axis the same length of time it takes to rotate the earth -28 days.
An object that orbits the sun and also revolves on its axis at the same time?
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Since the moon always keeps the same side facing earth does it rotates on its on axis?
Yes, it rotates at the same rate it orbits the Earth.
Can you consider that the planets in your solar system as having elliptical orbits with the same major axis and the perihelion and aphelion on the same side on this axis?
NO. jus...just no. Although I did see an alien with a sharpie in his pooper once.
Do all comets have the same orbital period?
No. At the extremity of a comet's orbit (farthest point from the sun) it is moving very slowly (for an interstellar object). But it cannot quite escape the sun's gravity, so it begins to fall back in toward the sun. It is accelerating constantly from that point on until it swings around the sun, when it is moving at it's fastest. Then, as it heads back out into space on it's orbit, it is slowly and steadily slowing down, and the whole cycle repeats.
What satellite orbits around the earth and takes the same time it takes for the earth to rotate on its axis?
Only artificial, geostationary satellites.
What makes the moon a satellite?
I believe because it orbits the earth and does not rotate or turn on an axis. You always see the same side of the moon.
What makes a moon a satellite?
I believe because it orbits the earth and does not rotate or turn on an axis. You always see the same side of the moon.
Why you can see only one side of moon?
The moon rotates on it's axis within the same period of time the moon orbits the earth, therefore only the "near side" of the moon can be seen from Earth. Technically the moon's "year" and the moon's "day" are equal length.
