(Courtesy NASA/JPL) Ida and Dactyl (GIF, 43K) This image is the first full picture showing both asteroid 243 Ida and its moon Dactyl transmitted to Earth from NASA's Galileo spacecraft. “IDA” , Oils, 2021. The tiny moon, named Dactyl, is about one mile across, while the potato shaped Ida measures about 36 miles long and 14 miles wide. This is the first full picture showing both asteroid 243 Ida and its newly discovered moon to be transmitted to Earth from the Galileo spacecraft--the first conclusive evidence that natural satellites of asteroids exist. The south pole is believed to be in the dark side near the middle of the asteroid. The smaller object in the picture is probably Dactyl. Ida, the large object, is about 56 kilometers (35 miles) long. It orbits within the main asteroid belt and was visited by the Galileo probe on its way to Jupiter. The second asteroid it photographed, Ida, was discovered to have a moon which appears as a small dot to the right of Ida in this image from 1993. This is the first full picture showing both asteroid 243 Ida and its newly discovered moon to be transmitted to Earth from the National Aeronautics and Space Administration's (NASA's) Galileo spacecraft--the first conclusive evidence that natural satellites of asteroids exist. Ida was the name given to an asteroid in the Kronis family of the asteroid belt by Austrian astronomer Johann Palisa. Ida, the first known moon of an asteroid, is the tiny dot to the right of the asteroid Dactyl in this enhanced-color image from the Galileo spacecraft. In 1993, the first asteroid moon was confirmed when the Galileo probe discovered the small Dactyl orbiting 243 Ida in the asteroid belt. During its examination of the asteroid Ida, the Galileo spacecraft returned images of a second object, Dactyl--the first confirmed satellite or moon of an asteroid; the much smaller moon is visible to the right of Ida. Ida and Moon: This color mosaic shows the asteroid Ida and its newly-discovered moon, Dactyl.The images were taken by the camera system on the Galileo spacecraft, about 14 minutes before its closest approach to the asteroid on August 28, 1993. Ida is the large object to the left and Dactyl is the small object to the right. Ida is about 56 kilometers (35 miles) long. 243 Ida is a Koronis asteroid orbiting the Sun between Mars and Jupiter: orbit: 428,000,000 km from the Sun (average) size: 58x23 km. Ida is the larger object (59.8 × 25.4 × 18.6 km). Ida… Its close encounter happened on Aug. 29, 1993 as Galileo flew by at a distance of about 1,500 miles (about 2,400 kilometers) en route to Jupiter. The second was discovered around 45 Eugenia in 1998. 243 Ida is the second asteroid visited by a spacecraft and the first found to have its own moon. The number 243 refers to the fact that it was the 243rd asteroid to be discovered since they were first discovered at the beginning of the 19th Century. Ida was a nymph who raised the infant Zeus (Jupiter). New images of the pocked, potato-shaped asteroid, which were captured by the spacecraft Galileo last August, reveal that a much smaller rock is floating nearby. Ida is also the name of a mountain on the island of Crete, the site of a classic shrine and the cave where Zeus was said to have been reared. The little moon was discovered in 1993, when Galileo was passing through the asteroid belt on its way to Jupiter. Ida appears to be about 52 km (32 mi) in length and is irregularly shaped. In 2001, 617 Patroclus and its same-sized companion Menoetius became the … IDA has a moon. Twitter. Ida is the first known asteroid that to be discovered that has a moon called Dactyl. Dactyl is the first moon of an asteroid ever discovered. Ida is of German origin and signifies “industrious one.” , OC
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