Low-cost satellites are typically classified based on their size and capabilities: Minisatellite: Weighing less than 500 kg, used for navigation, communication, and remote sensing. Microsatellite: Weighing between 100 and 500 kg, used for Earth observation, scientific research, and communication. Nanosatellite: Weighing less than 10 kg, used for educational purposes, technology demonstrations, and data collection.