Create a star and some planets:

Star kg
Gm
Planet #1 kg
Gm
Gm
Gm
deg

Add a new planet

or
Reference:
Radius (Gm) Mass (kg) Distance (Gm) Speed (Gm/s)
Sun 0.6955 1.988435e30 -- --
Mercury 0.0024397 3.30104e23 50.32 4.74e-5
Venus 0.0060519 4.86732e24 108.8 3.5e-5
Earth 0.0063674447 5.9721986e24 150 2.963e-5
Mars 0.003386 6.41693e23 227.94 0.0000228175
Jupiter 0.069173 1.89813e27 778.33 0.0000129824
Saturn 0.057316 5.68319e26 1429.4 9.280e-6
Uranus 0.025266 8.68103e25 2870.99 6.509e-6
Neptune 0.024553 1.0241e26 4504 5.449e-6