Inner-grazer is a class of solar orbits. This diagram shows the six possible types of orbits one planet can have in relation to another. The Sun is shown in the middle (the orange dot) and the outer planet's orbital band is in yellow. The orbit of the other planet is a ring whose inner radius is the planet's perihelion and its outer radius the aphelion.

  • Middle column, top: The minor planet's orbit enters the other planet's orbit from the inside without traversing it — it is an inner-grazer.

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