The mass of Uranus is about 14.5 times the mass of earth.
The mass of Uranus is 14.537 times greater than the mass of the Earth.
Sun = 1.989 x 1030Kg Earth = 5.97 x 1024Kg So the Sun is about 330,000 times more massive than the Earth
Yes, The weight makes the earth harder to bring in toward the sun's gravity field and therefore keeps the earth longer.