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A planet's year consists of the time it takes it to orbit the Sun. The Earth takes 365 and a quarter days to do this. Every 4 years there is a leap year which catches us up on these fractional days.
The position of a planet in its orbit can be determined by comparing its relative position from Earth when the Earth is in the "same" location (same day of the year). The positions of Venus and Mercury, which are closer to the Sun than Earth, can be observed directly, or indirectly by their "phases." The observation of phases of outer planets is a much more complex process, but also illustrates comparative positions in their orbits.
The location of a planet can be determined with some precision should it experience occultation (blockage) by the Sun. This establishes it on the opposite side of the Sun from Earth.
Wiki User
∙ 10y ago
Wiki User
∙ 11y agoThe length of a year for a planet is defined as the time it takes for that planet to orbit its star.
For example Earth takes about 365 days to orbit its star, the sun, so an Earth year is about 365 days. Jupiter takes about 11.86 Earth years to orbit its star (also the sun), so a Jupiter year is about 11.86 Earth years.
Earth years are often used to describe the length of years on other planets. The length of an Earth year doesn't change if you are on a different planet.
Wiki User
∙ 10y agoThe time a planet takes to go around the Sun (its year) depends on its distance from the Sun.
More precisely, it depends on the semi-major axis of the orbit. That is the average between the apapsis and the periapsis of the planet's orbit (closest and farthest distance) - in other words, the average distance from the Sun (roughly speaking.
The relation between the distance and the period of the orbit is given by Kepler's Third Law.
Wiki User
∙ 12y agoRevolutions about the Sun are generally regarded as one year, Earth, Mars, Jupiter, or otherwise.
Wiki User
∙ 12y agoWe estimate the distance between the sun and that planet, then we calculate the velocity of the planet.
Wiki User
∙ 15y agoEarth years are measured with a calendar.
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What determines the length of a planets year?
distance from a source of light and how long it takes to orbit that source
What planets year is only 88 days long?
Mercury
Which planets have more than 1000 days in a year?
Neptune's year is about 164 Earth years long.
How long are the planets orbits?
8 planets orbit the sun
Explain how the planets in our solar system move in relation to the sun?
Due to the sun's gravity, the planets in our solar system revolve around the sun. This revolution around the sun determines our seasons.
What determines the length of a planets year?
distance from a source of light and how long it takes to orbit that source
What determines the weight on planets?
Usually, its mass determines its weight.
How long is this planets year?
365 days
What planets day is half as long as its year?
murcury
Why do planets have different periods of revolution?
The planets are not all the same distance from the Sun, which determines how far they have to travel, and how fast they are moving. Planets farther from the Sun have much longer orbits and are not moving as quickly. So their period of revolution (year) is longer.
What planets year is only 88 days long?
Mercury
How long are the planets years?
Uranuses year is 84.3 Earth years
Which planets have more than 1000 days in a year?
Neptune's year is about 164 Earth years long.
What determine whether a planet is visible all night long?
the naked eye determines if it is visible.
How long does it take for earth moon to orbit around the sun?
One orbit around the Sun is what determines what one year is. Your answer is, "one year".
How long does it take an object to go around the sun?
Depends on distance Earth takes one year The two closer planets (Mercury and Venus) take less than a year The other planets take more than a year
What determines a year?
12 months is a year .
