What planets take longer to orbit the sun than Earth?

Answer 1

There is no planet in the solar system with a day longer than an Earth year.

The planets with a day shorter than their year are Venus and Mercury, but there are special circumstances that create opposite effects:

• Venus - the planet takes 243 Earth days to make one spin on its axis, which is more than its year (224 Earth days). However, the combination of these makes a "solar day" (noon to noon) a bit less than 117 Earth days. The reason for this change is that Venus spins in the opposite direction (clockwise from above) than other planets.
• Mercury only takes about 59 Earth days to spin on its axis, which is less than the 88 Earth days it takes to orbit the Sun. But the effect of this is to make the "solar day" on Mercury (noon to noon) 176 days long, in effect twice as long as its year.

Answer 2

There are no known planets with rotation periods longer than an Earth year. Venus has the longest rotation period in our solar system, taking 243 Earth days to complete one Venusian "day". Strangely, this is longer than one Venusian "year" or complete orbit around the Sun, which is 225 days, meaning Venus celebrates "New Year" more often than sunrise!

Answer 3

In our solar system, Mercury has the shortest "year", or orbital period. However, a great number of the extra-solar planets (planets that orbit other stars) have VERY short years, on the order of a few days!

This may be an artifact of the way that NASA is doing the measurements; when your satellite is measuring occultations, then you aren't likely to discover planets in more distant orbits! That's because planets more distant from the star occult much less of the star's surface, and doesn't occult the star's surface AT ALL if the planet's orbital plane doesn't pass through our solar system.

Answer 4

The orbits of Mercury and Venus are both closer to the sun than Earth's orbit.

Their orbital velocities are greater than the earth's orbital velocity, and they

don't have as far to go as earth does, so both have shorter "years" than

earth -- 88 earth days for Mercury, and 225 earth days for Venus.

Answer 5

The rotation period is the time taken for the planet to spin once on its axis. The planet in our solar system with the shortest period of rotation is Jupiter, taking 9 hours 55 minutes and 30 seconds to spin once on its axis.

Answer 6

Why don't you look it up instead of asking people. You people that ask questions on here are very lazy and should use your brain and actually do the work yourself. I'm sorry, but it is true, I mean why do you need to ask other people, they can find the info. on the net so why can't you?

Thanks for nothing!

Answer 7

All of the planets, except Mercury and Venus,

have longer years than Earth has.

Answer 8

Venus. The "day" is 243 "Earth days", while its year is 225 "Earth days".

Answer 9

Mercury.

Mercury.

Mercury.

Mercury.

Answer 10

Venus. The year is about 225 Earth days and the "sidereal" day is 243 Earth days.

Or, the answer could be Mercury. Its year is 88 Earth days and "solar day" about 176 Earth days.