Objects in a 1:2 orbital resonance with Neptune are known as what?

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Multiple Choice

Objects in a 1:2 orbital resonance with Neptune are known as what?

Explanation:
Resonant orbits occur when two bodies share a simple integer ratio between their orbital periods. For a 1:2 resonance with Neptune, the smaller body completes one orbit for every two orbits of Neptune. This places the object in a stable resonance where their gravitational interactions keep the orbits locked, typically in the trans-Neptunian region with a period about twice Neptune’s. This specific resonance is called Twotinos. It’s distinct from Plutinos, which are in a 2:3 resonance with Neptune (two orbits for every three of Neptune). Trojans, by contrast, share a planet’s orbit at stable Lagrange points rather than being in a 1:2 resonance, and Kuiper Belt Objects is a broad category that includes many objects, not all in resonance.

Resonant orbits occur when two bodies share a simple integer ratio between their orbital periods. For a 1:2 resonance with Neptune, the smaller body completes one orbit for every two orbits of Neptune. This places the object in a stable resonance where their gravitational interactions keep the orbits locked, typically in the trans-Neptunian region with a period about twice Neptune’s.

This specific resonance is called Twotinos. It’s distinct from Plutinos, which are in a 2:3 resonance with Neptune (two orbits for every three of Neptune). Trojans, by contrast, share a planet’s orbit at stable Lagrange points rather than being in a 1:2 resonance, and Kuiper Belt Objects is a broad category that includes many objects, not all in resonance.

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