CTA 102 is a compact quasar located in the constellation Pegasus. It is one of the most luminous and variable sources of electromagnetic radiation in the universe. CTA 102 has been extensively studied in various wavelengths of light, including radio, optical, and X-ray. Researchers have studied CTA 102 to better understand the physics of quasars, which are thought to be powered by supermassive black holes at the centers of galaxies. By studying the variability and emission properties of CTA 102, scientists hope to gain insights into the accretion processes and jet formation around black holes. Overall, research on CTA 102 provides important clues about the nature of quasars and the role they play in galaxy evolution and the dynamics of the universe.