The reason why the giant planet has a shorter day is because of its rotational velocity with is 28, Since the planet is not solid, the rotational speed at the equator is higher compared to the rotational speed at the poles. On Jupiter, the sun would be seen on the same point on the sky in about 10 hours. In one Jovian year, the sun will rise and set for approximately 10, times. The planet Saturn experiences almost the same situation as Jupiter, and the rotational speed of the planet is 22, This implies that the planet takes an average of 10 hrs and 33 mins to complete one sidereal rotation, and therefore a day on the planet Saturn is less than half a day on planet Earth.
Saturn also takes the comparable of The sidereal rotation of the planet Uranus takes 17 hrs, 14 mins and 24 secs, which is about 0.
The planet has a tilt of Therefore, during summer on the planet, one side will experience continuous sunlight for 42 years while one side which is facing away from the sun will experience perpetual darkness for 42 years as well.
Therefore, one single day in Uranus, which is the duration from one sunrise the next sunrise would typically last for 84 years. In other words, one Uranian day is the same as one Uranian year, which is equivalent to First, the earth rotates on its axis, like a spinning top.
Second, the earth revolves around the sun, like a tetherball at the end of a string going around the center pole. The top-like rotation of the earth on its axis is how we define the day. The time it takes the earth to rotate from noon until the next noon we define as one day. We further divide this period of time into 24 hours, each of which is divided into 60 minutes, each of which is broken into 60 seconds. There are no rules that govern the rotation rates of the planets, it all depends on how much "spin" was in the original material that went into forming each one.
Giant Jupiter has lots of spin, turning once on its axis every 10 hours, while Venus takes days to spin once. The revolution of the earth around the sun is how we define the year. A year is the time it takes the earth to make one revolution - a little over days. We all learn in grade school that the planets move at differing rates around the sun.
While earth takes days to make one circuit, the closest planet, Mercury, takes only 88 days. Poor, ponderous, and distant Pluto takes a whopping years for one revolution. Below is a table with the rotation rates and revolution rates of all the planets.
We need to go back to the time of Galileo, except that we're not going to look at his work, but rather at the work of one of his contemporaries, Johannes Kepler Kepler briefly worked with the great Danish observational astronomer, Tycho Brahe. Because of this, astronomers use three systems as frames of reference. System II applies at all latitudes north and south of these; its period is 9 hours, 55 minutes, and So if you could, theoretically, stand on the cloud tops of Jupiter or possibly on a floating platform in geosynchronous orbit , you would witness the sun rising an setting in the space of less than 10 hours from any latitude.
And in the space of a single Jovian year, the sun would rise and set a total of about 10, times. Despite its massive size, the planet has an estimated rotational velocity of 9.
As such Saturn takes about 10 hours and 33 minutes to complete a single sidereal rotation, making a single day on Saturn less than half of what it is here on Earth. And, also like Jupiter, Saturn takes its time orbiting the Sun. With an orbital period that is the equivalent of 10, System II covers all other Saturnian latitudes, excluding the north and south poles, and have been assigned a rotation period of 10 hr 38 min Using these various systems, scientists have obtained different data from Saturn over the years.
In , this was revised by researches at the Department of Earth, Planetary, and Space Sciences, UCLA, which resulted in the current estimate of 10 hours and 33 minutes. Much like with Jupiter, the problem of obtaining accurate measurements arises from the fact that, as a gas giant, parts of Saturn rotate faster than others.
When we come to Uranus, the question of how long a day is becomes a bit complicated. One the one hand, the planet has a sidereal rotation period of 17 hours 14 minutes and 24 seconds, which is the equivalent of 0. So you could say a day on Uranus lasts almost as long as a day on Earth. With an axial tilt of This means that either its north or south pole is pointed almost directly at the Sun at different times in its orbital period.
When that same pole is pointed away from the Sun i. Hence, you might say that a single day — from one sunrise to the next — lasts a full 84 years on Uranus! In other words, a single Uranian day is the same amount of time as a single Uranian year Select personalised content. Create a personalised content profile. Measure ad performance. Select basic ads.
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Carolyn Collins Petersen is an astronomy expert and the author of seven books on space science. She previously worked on a Hubble Space Telescope instrument team. Facebook Facebook. Planet Length of Day Mercury
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