4604 Stekarstrom (provisional designation: 1987 SK) is a main belt minor planet. It was discovered by Kenzo Suzuki and Takeshi Urata in Toyota, Aichi Prefecture, Japan, on September 18, 1987. It was named for Stephen and Karen Strom, two American astronomers and photographers. Asteroids (from Greek 'star' and 'like, in form') are a class of Small Solar System Bodies in orbit around the Sun. They have also been called planetoids, especially the larger ones. These terms have historically been applied to any astronomical object orbiting the Sun that did not show the disk of a planet and was not observed to have the characteristics of an active comet, but as small objects in the outer Solar System were discovered, their volatile-based surfaces were found to more closely resemble comets, and so were often distinguished from traditional asteroids.
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