Orbital Physics: The Incompatibility of 24-Hour Sunlight and Low-Latency Orbits

A fundamental constraint exists within the field of orbital mechanics. This limitation concerns the simultaneous achievement of two desirable satellite characteristics. Specifically, it highlights the incompatibility between continuous 24-hour sunlight exposure and low-altitude, low-latency orbits. Satellites often seek constant solar illumination for power generation and uninterrupted operations. Concurrently, low-altitude orbits are preferred for reduced signal latency and higher resolution observations. However, the geometry of orbits dictates that these two conditions are mutually exclusive. Maintaining continuous sunlight typically requires specific higher orbits or inclinations that avoid Earth's shadow. Conversely, low-altitude orbits inherently pass through Earth's shadow more frequently, leading to eclipses. This presents a significant design challenge for engineers planning future satellite missions. Mission planners must prioritize one requirement over the other, or seek complex compromises.