19907

19907 is an asteroid located in the outer region of the main asteroid belt between the orbits of Mars and Jupiter. It was discovered on October 16, 1977, by the Soviet astronomer Nikolai Chernykh at the Crimean Astrophysical Observatory in Nauchnyi, Ukraine. The asteroid is named after the Soviet astronomer Lyudmila Chernykh, who was the wife of Nikolai Chernykh and a prominent figure in the field of asteroid research.

19907 belongs to the Koronis family, a group of asteroids that share similar orbital characteristics and are believed to have originated from the breakup of a larger parent body. This family is named after 158 Koronis, the largest member of the group. Asteroids in this family are primarily composed of silicate materials, suggesting a rocky or stony composition.

The orbit of 19907 has an average distance from the Sun of approximately 2.92 astronomical units (AU), where one AU is the average distance between the Earth and the Sun. Its orbital period, or the time it takes to complete one orbit around the Sun, is about 4.99 Earth years. The asteroid has a relatively circular orbit with a low inclination of around 4.5 degrees relative to the plane of Earth's orbit, known as the ecliptic.

Due to its distance and size, 19907 is not classified as a near-Earth object and poses no known threat to Earth. Its diameter is estimated to be around 10 kilometers (6.2 miles), making it a relatively large asteroid within the Koronis family. Observations of 19907 and other asteroids in the Koronis family help scientists study the early solar system, as these objects are thought to retain primitive characteristics from the time of their formation.