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Top 5 planets with the longest year (orbital period)

evergreen

Orbital period — Astronomy

Snapshot · 2026-05-31

  1. 1

    Neptune

    ~165 Earth years

  2. 2

    Uranus

    ~84 Earth years

  3. 3

    Saturn

    ~29.5 Earth years

  4. 4

    Jupiter

    ~11.9 Earth years

  5. 5

    Mars

    ~1.88 Earth years