(469306) 1999 CD158 (provisional designation 1999 CD158) is a resonant trans-Neptunian object from the circumstellar disc of the Kuiper belt, located in the outermost region of the Solar System.
It was discovered on 10 February 1999, by American astronomers Jane Luu, David Jewitt, and Chad Trujillo at Mauna Kea Observatories on the Big Island of Hawaii, United States.
[14] Photometric observation of 1999 CD158 in March 2015, gave a classically shaped bimodal lightcurve with a rotation period of 6.88 hours and a large brightness variation of 0.49 magnitude (U=3-).
[6] Observations with the New Technology Telescope at ESO's La Silla Observatory in Chile in 2008, determined the body's BVRI colors to be 0.770 (B–V), 0.630 (V–R), and 1.110 (V–I) for their respective passbands.
[8] According to estimates by the Johnston's archive, the Collaborative Asteroid Lightcurve Link, and American astronomer Michael Brown, 1999 CD158 measures between 420 and 477 kilometers in diameter.