The paper reports on the discovery of a contact binary satellite, (152830) Dinkinesh1 Selam, orbiting the asteroid (152830) Dinkinesh. The Lucy spacecraft observed Dinkinesh, a small asteroid with an effective diameter of 720 meters, during a close flyby. The observations revealed a complex structure on Dinkinesh, including a prominent longitudinal trough and an equatorial ridge. The discovery of Selam, a contact binary consisting of two nearly equal-sized lobes (210 meters and 230 meters in diameter), orbiting Dinkinesh at a distance of 3.1 kilometers with a period of about 52.7 hours, is significant. The system is tidal-locked, with the rotation period of Dinkinesh being 3.74 hours and the orbital period of Selam being 52.67 hours. The formation of the contact binary is attributed to mass failure due to spin-up by the YORP effect followed by partial reaccretion. The paper also discusses the mineralogy and bulk density of Dinkinesh, which are consistent with S-type asteroids, and the implications for the evolution of small asteroids in the main belt.The paper reports on the discovery of a contact binary satellite, (152830) Dinkinesh1 Selam, orbiting the asteroid (152830) Dinkinesh. The Lucy spacecraft observed Dinkinesh, a small asteroid with an effective diameter of 720 meters, during a close flyby. The observations revealed a complex structure on Dinkinesh, including a prominent longitudinal trough and an equatorial ridge. The discovery of Selam, a contact binary consisting of two nearly equal-sized lobes (210 meters and 230 meters in diameter), orbiting Dinkinesh at a distance of 3.1 kilometers with a period of about 52.7 hours, is significant. The system is tidal-locked, with the rotation period of Dinkinesh being 3.74 hours and the orbital period of Selam being 52.67 hours. The formation of the contact binary is attributed to mass failure due to spin-up by the YORP effect followed by partial reaccretion. The paper also discusses the mineralogy and bulk density of Dinkinesh, which are consistent with S-type asteroids, and the implications for the evolution of small asteroids in the main belt.