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Why do satellites have a period of rotation equal to the earths period of rotation?
Wiki User
∙ 13y ago
Some satellites cover the whole earth each pass, because that is what they are used for. However, many also cover nly certan regions such as the poles or the equator or one continent or one country.
Geostationary orbiters for example, stay above the same place forever (that is, until they are taken or sent down by something). Many orbit over the same places each time, covering the same regions each pass. This is true of all satellites, the difference is how large the regions are nd how many of them.
Some satellites cover the whole earth each pass, because that is what they are used for.
Wiki User
∙ 14y ago
Wiki User
∙ 13y agoNot all of them do; only "geosynchronous" satellites do. The orbit of a satellite is determined by the purpose of the satellite. Geosynchronous communications satellites appear to hang suspended in the sky, BECAUSE their orbit is there, which means that your antenna doesn't have to track with a moving satellite.
Wiki User
∙ 11y agoBecause the plane of the orbit stays fixed,
and the Earth rotates inside of the orbit.
Wiki User
∙ 14y agoBecause they are. Everything in orbit is moving separately.
Wiki User
∙ 14y agoIf the satellites were not orbiting the Earth, they would fall down. In orbit, they are still falling - but they are going so fast that they keep missing the Earth!
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What is the temperature on Ceres day and night?
Ceres' rotation has no effect on the earths rotation. Ceres rotational period is equal to one day on Ceres.
What is the time of one rotation on its axis for Venus?
The rotation period of Venus is equal to 243.02 Earth days. In other words, one "day" (a "sidereal day" to be precise) on Venus is equal to about 243 Earth days. A sidereal day is the rotation period relative to the distant stars. It's often confused with the "solar day" which is based on the position of the Sun. The solar day for Venus is only about 117 Earth days. For Earth there is hardly any difference in the lengths of the two days . So people usually just say an "Earth day" for either.
How long does it take for venus to complete a full rotation?
venus completes an orbit every 224.65 days.
How many Earths can fit across Uranus?
Approximately 4 Earths would equal the diameter of Uranus
Why is the solar day not equal in time to the period of exactly one rotation of the earth about its axis?
Its to do with the planets progression around the sun in that time. A planets rotation is often expressed in terms of how long it takes to revolve once on its axis relative to the fixed background stars (sidreal rotation period). But during this time, the earth (or other planet) has moved around the sun a little. This progression means that the angles have changed, the earth has to rotate just that little bit more for the sun to appear in the same place as it did the day before. So for Earth and most other planets, a solar or apparent day is slightly longer than its sidereal rotation period.
What is the temperature on Ceres day and night?
Ceres' rotation has no effect on the earths rotation. Ceres rotational period is equal to one day on Ceres.
Plutos period of rotation?
Pluto has a rotational period equal to 153.3 hours.
Explain the Moons period of rotation versus period of revolution.?
They are precisely equal.
How long does one rotation on it axis take for venus?
The rotation period of Venus is equal to about 243.02 Earth days.
What is the period of rotation to equal 1 day on the planet Venus?
about 243 earth days
What State is at which the moon orbital and rotational periods are equal?
A state of `synchronous rotation`. Its where the rotational period of the moon is equal to orbital rotation period about Earth, one face of the moon will always appear to face earth. In our moons case this is due to tidal locking.
Why do you always sees the same side of the moon?
Because the period of the Moon's revolution around the Earth and the period of the Moon's rotation on its axis are precisely equal.
What is earths length of day in days?
The time that it takes Saturn to rotate on its axis completely (one Saturn day) is equal to a time period ranging from 10 hours and 14 minutes to 10 hours and 39 minutes, with an average of 10 hours and 32 minutes.Saturn's rotation period is 10.66 earth hours = 0.44 Earth Day
How long is plutos potation?
A single day, or one rotation period for Pluto, is equal to 6.39 days on Earth. The orbital period of Pluto is equal to 248 years on Earth. Pluto has an axial tilt of 120 degrees.
When the Moon reaches equal periods of orbital and rotational periods it's known as rotation?
When a satelite's rotational period is the same as its orbital period, like our moon, the satelite is tidally locked to the body being orbited. Such a rotation rate is known as a synchronous rotation. The effect is that the same side of the satelite always faces the orbited body.
Which one of the following planets has equal periods of rotation and revolution?
well, it just so happens I've done research in this type of stuff in school, and i can remember, and tell you that the 2 planets that have the closest period of rotation are Jupiter and Saturn.
Can satellites at different heights have equal velocities?
I'm not sure
