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Is a sidereal day longer or shorter than a solar day?
The Sun crosses the meridian (the imaginaryline in the sky from due north to due south and passing directly overhead) at solar noon. The period between two successive solar noons is a "solar day". When you reckon the period of time between two successive meridian transits of a distant star, or the vernal equinox, that is a "sidereal day". In simple terms the sidereal day is the rotation period of a planet.
Which is longer the stellar day the sidereal day or the solar day?
Usually the solar day is the longest. The other two are very similar in length to each other. For example, the solar day on Earth is about 4 minutes longer than the other two "days". However, for the planet Venus the solar day is the shortest. That's because Venus has retrograde rotation.
How many earth day is there in a mars day?
The day lengths are very similar. Earth has a 24 hour day. This is the"solar day". Earth spins once in about 4 minutes less time than the solar day and that's called the sidereal day. Mars spins once in about 24 hours 37 minutes. The solar day on Mars is about 2 minutes longer.
How long does it take for a day to pass on Neptune?
The length of a day, or sidereal period, on Neptune is 16 hours 6 min 13 seconds (0.6713 days) Because Neptune is not a solid body, its atmosphere undergoes differential rotation. The wide equatorial zone rotates at a period of about 18 hours, at the polar regions the rotation period is about 12 hours.
Why is the solar day on Mercury longer than earth's solar day?
1) Mercury rotates very slowly. It takes Mercury about 58.6 Earth days to rotate just once. That's the length of the sidereal day. 2) Mercury has a solar day of about 176 Earth days in length. So, Mercury's solar day is much longer than its long sidereal day. That's because of the combination of slow rotation with a short orbital period (about 88 Earth days).
Why the length of day appears to be 4 minutes longer than it actually is?
There is more than one definition of "day". On the Earth one "day" is about 4 minutes longer than the other. Both are correct. The "solar day" is 24 hours, but the "sidereal day" is about 4 minutes shorter. The sidereal day is the time the Earth takes to rotate once. The solar day is the time taken (on average) for the Sun to complete its apparent daily journey around the sky. The solar day is a bit longer because the Earth orbits the Sun and that affects the position of the Sun in the sky. The Earth needs to rotate for about 4 minutes more than the "sidereal day" to have the Sun in the same place in the sky again.
What planets days are longer than your year?
Venus "sidereal day" is longer than its year. Mercury's "solar day" is longer than its year. However, there is no planet in our solar system with a day longer than our year on Earth.
If the direction of rotation of the Earth were reversed and the direction of revolution remained the same would the sidereal day be longer than the solar day?
Yes, I believe you have that correct.
What is the time difference between mars and earth?
Its 'sidereal' day is 24 hours, 37 minutes and 22 seconds, and its solar day 24 hours, 39 minutes and 35 seconds. A Martian day (referred to as “sol”) is therefore approximately 40 minutes longer than a day on Earth.
Is a sidereal day longer or shorter than a solar day?
The Sun crosses the meridian (the imaginaryline in the sky from due north to due south and passing directly overhead) at solar noon. The period between two successive solar noons is a "solar day". When you reckon the period of time between two successive meridian transits of a distant star, or the vernal equinox, that is a "sidereal day". In simple terms the sidereal day is the rotation period of a planet.
How long does the earth take to completeone orbit of the sun?
Our earth takes 365 days, 6 hours and 7 seconds to complete one orbit around sun . It is called the earth's sidereal year . The sidereal period of the earth about the sun , about 20 minutes longer than the solar year . One solar year is 365 days, 5 hours, 48 minutes and 46 seconds .
How long is day on mars?
a day on mars is 24 hours and 37 minutes slightly longer than an earth day. Edit : Yes, but that's the "sidereal day" or rotation period. There's also the "solar day" which is about 2 minutes longer.
Which is longer the stellar day the sidereal day or the solar day?
Usually the solar day is the longest. The other two are very similar in length to each other. For example, the solar day on Earth is about 4 minutes longer than the other two "days". However, for the planet Venus the solar day is the shortest. That's because Venus has retrograde rotation.
How many earth day is there in a mars day?
The day lengths are very similar. Earth has a 24 hour day. This is the"solar day". Earth spins once in about 4 minutes less time than the solar day and that's called the sidereal day. Mars spins once in about 24 hours 37 minutes. The solar day on Mars is about 2 minutes longer.
How many earth hours is a day on mars?
The rotational period (sidereal day) on Mars is slightly longer than Earth's, about 24.62 Earth hours. This is about 24 hours, 37 minutes, 22 seconds. The "solar day" (noon to noon) on Mars is slightly longer, about 24 hours, 39 minutes, 35 seconds.
How long does it take for a day to pass on Neptune?
The length of a day, or sidereal period, on Neptune is 16 hours 6 min 13 seconds (0.6713 days) Because Neptune is not a solid body, its atmosphere undergoes differential rotation. The wide equatorial zone rotates at a period of about 18 hours, at the polar regions the rotation period is about 12 hours.
How long are the days on Venus compared to the days on Earth?
The Earth rotates in about 23 hours and 56 minutes. That's called the "sidereal day". The sidereal day on Venus is about 243 Earth days. As a year on Venus is only about 224.7 Earth days, this makes Venus' day longer than its year. Venus is the only planet in our Solar System to have this feature.
