Your Age on Planet Neptune

Neptune is the eighth and most distant planet of the solar system from the Sun. It is 17 times the mass of Earth, slightly more massive than its near-twin Uranus. The planet revolves around the Sun once every 164.8 years. By July 12, 2011, Neptune had completed a full orbit around the sun since the planet was discovered in 1846. The planet is named after the Roman god of the sea. Neptune has the astronomical symbol ♆, a stylized version of the god Neptune's trident.

Neptune was the first planet located by mathematical calculations. Using predictions by Urbain Le Verrier, Johann Galle discovered the planet in 1846. Neptune is considered an ice giant.

Neptune also has the strongest wind of any planet in the solar system, as high as 2,100 km/h or 1,300 mph.

Neptune has fourteen moons. The longest known moon is Triton.

The first observations of Neptune were made by Galileo Galilei in December 1612 and January 1613, when the planet appeared right next to Jupiter. But because Galileo assumed it was a star, the discovery is not credited to him. On May 8 and 10, 1795, Neptune was again observed by Jérôme Lalande, but he too did not realize that this was a planet and thought he had made a mistake in his calculations.

In 1821 Alexis Bouvard published tables of the orbit of Uranus, noting anomalies (perturbations) that could only be caused by another planet. In 1843, John Couch Adams and Urbain Le Verrier independently calculated the orbit that this hypothetical planet would describe, but it was dismissed as impossible by George Airy. In the summer of 1846, James Challis hesitantly began a new search for the unknown planet. However, it was Johann Galle and Heinrich d'Arrest who first observed the planet on September 23, 1846, just 1° from where Adams and Le Verrier predicted it. Challis later realized that he had already sighted the planet twice in August, without recognizing it as the new planet.

The structure of the ice giant Neptune is very similar to that of Uranus. The core consists of metal and rock and around it is a mantle of rock, water, ammonia and methane (which gives it the bright blue color). Outwardly, the mantle becomes more and more liquid and eventually passes gradually into the atmosphere.

At higher altitudes, Neptune's atmosphere consists almost entirely of hydrogen and helium. Lower also methane, ammonia and water are found. The relatively high concentration of methane in the lower atmosphere causes the blue color characteristic of Neptune. Unlike the atmosphere of Uranus, large cloud formations do occur on Neptune. Until 1994, there was a large dark spot caused by a giant storm, the size of Earth and similar to the Great Red Spot on Jupiter, but later it disappeared and a new one appeared.

Like Earth's magnetic field, Neptune's field can be roughly represented by that of a dipole, but its polarity is essentially opposite to that of Earth's current field.

The average wind speed on Neptune is 200 to 300 meters per second (about 900 km per hour). The winds rotate from east to west, opposite to the planet's rotation. Using Voyager 2, the highest wind speed was measured at 2400 km per hour, which is five times faster than the highest speed in a tornado on Earth. The highest wind speeds are measured on Neptune around the equator. Presumably these storms are caused by the heat radiation of the planet.

In 1989, the Great Dark Spot, an anticyclonic storm system spanning 13,000 km × 6,600 km was discovered by NASA's Voyager 2 spacecraft.

The winds in the storm were the strongest ever seen on any planet in the solar system. By 1994 the big dark spot had completely disappeared. In 2016, a very similar spot appeared in Neptune's northern hemisphere.

Five rings are known in 2004 that are located at distances between 41,900 and 62,900 km from the center of the planet. The rings consist of five main rings. The outermost of these, the Adams ring, consists of four separate arches bearing the names Liberté, Egalité, Fraternité, and Courage. Under the influence of the moon Galatea, these arcs do not grow into complete rings.

Neptune cannot be seen without telescope, because of its great distance from the sun it is not bright enough. With binoculars and a search card, Neptune can be found, but it is little more spectacular than an eighth size "star". To see it as a blue disk, a fairly large telescope is required.

Do you want to know what would be your age if you were born on Neptune? So just select your birthdate in the above form and click on the calculate button and this tool will calculate and tell you how many revolutions Neptune has made on the Sun and its axis since your birthday. That is, how old are you on Neptune in years, months and days, along with this this calculator will also give the date of your next birthday on Neptune.

Neptune orbit around the Sun takes 60,190 Earth days. For easy understanding we have written some years in the table below and it has been converted to how many years on Neptune if you are x years old on Earth.