Given the task definition and input, reply with output. Given a passage and a query based on the passage, generate an unambiguous, concise and simple answer to the query from information in the passage. Note that the answer may not be present in exact form.

The Universe Today readers are always asking great questions. ”How long is a day on Jupiter?”, is one of them. A day on Jupiter, also known as the sidereal rotation period, lasts 9.92496 hours. Jupiter is the fastest rotating body in our Solar System. Determining the length of a day on Jupiter was very difficult, because, unlike the terrestrial planets, it does not have surface features that scientists could use to determine its rotational speed. How long is a day on other planets by Colm Byrne on January 3, 2013 When we think of a day on Earth we measure it in a period of 24 hours, actually it takes 23 hours and 56 minutes and 4 seconds to rotate on it’s axis. So, if we measure a day on each planet compared to Earth it kind of makes it easier. The Jovian day is 9.925 Earth hours in length The Jovian year is 11.862 Earth years in length Earth overtakes Jupiter every 398.9 days as it orbits the Sun, a duration called the synodic period. As it does so, Jupiter appears to undergo retrograde motion with respect to the background stars. NASA’s Ask an Astronomer also has an answer for the question, “how long is a day on Jupiter?” And a cool video of Jupiter’s rotation. We’ve also recorded an entire show just on Jupiter for Astronomy Cast. Listen to it here, Episode 56: Jupiter, and Episode 57: Jupiter’s Moons. Best Answer: A Jupiter day is 0.41354 as long as our day or about 10 hours. The year is 4332.71 earth days long or about 12 earth years. A month is determined by the revolution of our moon around the earth. Jupiter has many moons so it does not have months like we do. The Universe Today readers are always asking great questions. ”How long is a day on Jupiter?”, is one of them. A day on Jupiter, also known as the sidereal rotation period, lasts 9.92496 hours. Jupiter is the fastest rotating body in our Solar System. Determining the length of a day on Jupiter was very difficult, […] How Long Is A Day On Saturn? Date: May 3, 2006 Source: Particle Physics & Astronomy Research Council Summary: Measuring the rotation period of a rocky planet like the Earth is easy, but similar measurements for planets made of gas, such as Saturn, pose problems. Researchers from JPL, Imperial College London and UCLA present new results in this week's Nature (4th May 2006) that may solve the mystery. Using the magnetometer instrument on Cassini, they have found a clear period in the magnetic field of the planet that they believe indicates a day of 10 hours and 47 minutes. How long is a day on other planets. by Colm Byrne on January 3, 2013. When we think of a day on Earth we measure it in a period of 24 hours, actually it takes 23 hours and 56 minutes and 4 seconds to rotate on it’s axis. So, if we measure a day on each planet compared to Earth it kind of makes it easier. Some of the planets rotate and spin slow and some rotate and spin fast so you can see a big difference as they orbit the Sun in our solar system. Mercury – 58 days and 15 hours. Venus – 243 Earth days. Earth – 23 hours and 56 minutes This is a whole 8 minutes slower than NASA Voyager results from the early 1980s, and slower than previous estimates from another Cassini instrument. The magnetometer results provide the best estimate of the Saturn day to date, because it can see deep inside Saturn. Planets rotate around their spin axes as they orbit about the Sun. Rocky planets like the Earth and Mars have rotation periods that remain quite constant and are easy to measure because we can see the surfaces rotate. Mercury – 58 days and 15 hours. Venus – 243 Earth days. Earth – 23 hours and 56 minutes. Mars – 24 hours 39 minutes and 35 seconds. Jupiter – 9.9 Earth hours. Saturn – 10 hours 39 minutes and 24 seconds. Uranus – 17 hours 14 minutes and 24 seconds. Neptune – 16 hours 6 minutes and 36 seconds. Pluto – 6.39 Earth days Query: how long is a day on jupiter in earth days

Jupiter is 9.9 Earth hours.