I am reading MWT gravitation and on page 676, they are talking about orbits of photon, and I don't understand it very well. Energy and angular momentum of the photon are important as a ratio when calculating the orbit. But not energy alone or angular momentum alone. Why is that, and the energy is in the denominator, b = L/E meaning that b will be a small number once E is big. Does that mean one photon will have a different orbit depending on it's energy?