Here's a table showing the average orbital speeds of the planets in our solar system:

| Planet | Average Orbital Speed (km/s) |

|---------------|-----------------------------|

| Mercury | 47.89 |

| Venus | 35.02 |

| Earth | 29.78 |

| Mars | 24.07 |

| Jupiter | 13.07 |

| Saturn | 9.69 |

| Uranus | 6.81 |

| Neptune | 5.43 |

Important Notes:

* Average Speed: These are average orbital speeds. Planets don't travel at a constant speed in their orbits. They move faster when closer to the Sun and slower when further away.

* Elliptical Orbits: Planets orbit the Sun in elliptical paths, not perfect circles. This means their speeds vary throughout their orbits.

Let me know if you'd like to know more about orbital mechanics!