133137

133137 is a numbered minor planet located in the main asteroid belt between Mars and Jupiter. It was discovered on 12 February 2004 by the LINEAR survey at the Lincoln Near-Earth Asteroid Research facility in Socorro, New Mexico. The provisional designation given at the time of discovery was 2004 CE49. The orbit of 133137 is moderately eccentric, with a semi-major axis of 2.25 astronomical units, an eccentricity of 0.12, and a perihelion distance of 1.98 astronomical units and an aphelion distance of 2.52 astronomical units. Its orbital period is approximately 3.37 Earth years.

The object follows a low-inclination orbit, with an inclination of about 5 degrees relative to the ecliptic. Photometric observations indicate a relatively slow rotation period of roughly 12 hours and a lightcurve amplitude that suggests a somewhat elongated shape. Spectroscopic studies have classified 133137 as an S-type asteroid, indicating a silicate-rich composition common to many inner-belt asteroids. No satellite or additional companions have been detected as of the latest survey data.

133137 was given its permanent number by the Minor Planet Center after it was observed over multiple oppositions, ensuring its orbit was well established. No official name has been assigned yet, and it remains referenced by its numeric designation in astronomical databases. The asteroid serves as a typical example of the population of ordinary main-belt asteroids that provide insight into the early solar system material.