Inner-grazer is a class of solar

Sun

The Sun is the star at the center of the Solar System. It is almost perfectly spherical and consists of hot plasma interwoven with magnetic fields...

 orbit

Orbit

In physics, an orbit is the gravitationally curved path of an object around a point in space, for example the orbit of a planet around the center of a star system, such as the Solar System...

s. 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

Planet

A planet is a celestial body orbiting a star or stellar remnant that is massive enough to be rounded by its own gravity, is not massive enough to cause thermonuclear fusion, and has cleared its neighbouring region of planetesimals.The term planet is ancient, with ties to history, science,...

'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.

See also

• Earth grazing fireball, grazes Earth's atmosphere rather an orbit