2726 Kotelnikov, also known by its provisional designation 1979 SE9, is a stony Koronian asteroid located in the outer regions of the main asteroid belt between the orbits of Mars and Jupiter. It is classified as an S-type asteroid.
The asteroid was discovered on September 22, 1979, by the Soviet astronomer Nikolai Chernykh at the Crimean Astrophysical Observatory in Nauchnij, located on the Crimean Peninsula. The permanent designation 2726 was assigned after its orbit had been sufficiently determined.
Physically, 2726 Kotelnikov is estimated to have a diameter of approximately 10 kilometers (about 6.2 miles). It has a rotation period of approximately 4.91 hours. According to NASA's Jet Propulsion Laboratory (JPL), the asteroid is not classified as potentially hazardous because its orbital path does not bring it in close proximity to Earth.
