摘要:This short note classifies the interactions between different objects in the solar system and their environments with the solar wind or magnetospheric plasma.The classification is performed using a simple but physically justified M - B diagram, where M is the total mass of the neutral gas around the object and B is the magnetic field (either intrinsic or external) at the object.The solar system objects form groups within the diagram that correspond to the following general classes: magnetospheres, mini-magnetospheres, induced magnetospheres, cometary and Moon-like interactions.The Martian magnetic anomalies are unique objects.We also identify a class termed as combined magnetospheres, which does not contain any objects that meet the present conditions.