2007-01-01 03:38:56 · 21 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space
Because its orbit has a bigger semi-major axis and its year is longer if its semi-major axis is larger (Kepler's Laws of Planetary Motion).
Kepler's third law
The squares of the orbital periods of planets are directly proportional to the cubes of the semi-major axis of the orbits.
T^2 is proportional to a^3
T = orbital period of planet
a = semimajor axis of orbit
PLUTO
Semi-major axis: 5,906,376,272 km 39.48 AU
Orbital period: 248.09 years
NEPTUNE
Semi-major axis: 4,498,252,900 km 30.07 AU
Orbital period: 164.88 years
Cubes of: semi-major axes: 27,189.44 (N) and
61,536.3 (P)
Ratio: Pluto to Neptune: 2.263 : 1
Squares of orbital periods: 27,185.41 (N) and 61,548.6 (P)
Ratio: Pluto to Neptune: 2.264 : 1
Slight discrepancy arises from my rounding down the figures quoted
2007-01-01 03:42:39 · answer #1 · answered by Anonymous · 4⤊ 0⤋
Neptune Orbit Time
2016-11-14 00:17:49 · answer #2 · answered by ? 4 · 0⤊ 0⤋
Because -on average- it's further away from the sun. It isn't always, at some points in its orbit Pluto comes within Neptune's orbit.
2007-01-01 12:44:37 · answer #3 · answered by Anonymous · 0⤊ 0⤋
pluto?
which 1's pluto again?
is that the 1 the US Scientists threw out of the Planetary Group 4 not being Obese enough?
anyway i agree with above, it's futher than Neptune, hence it'll take longer 2 orbit the Sun.
2007-01-01 03:42:44 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Because pluto has a larger orbit than neptune so it takes a longer time to complete a full revolution
2007-01-03 09:45:30 · answer #5 · answered by manc1999 3 · 0⤊ 0⤋
Pluto is further away from the sun than Neptune.
2007-01-01 07:26:37 · answer #6 · answered by bldudas 4 · 0⤊ 0⤋
1. pluto is further from the sun than neptune, so its orbit had more area than neptune
2. pluto has a different shape of orbit than neptune and the other planets; it looks more elongated (i forgat what it's called though; sorry)
2007-01-01 04:05:24 · answer #7 · answered by transcend 2 · 0⤊ 0⤋
definite. each and every each and every now and then Neptune and Pluto interchange positions interior the image voltaic gadget making Pluto the 8th spot and neptune the 9th. they don't unquestionably "substitute orbits" yet their atypical shapes pass paths. It has to do with teh unusual shape of the orbits and the gravitational pull of the sunlight
2016-12-11 20:27:11 · answer #8 · answered by ? 4 · 0⤊ 0⤋
Because its farther from the sun. This may help
Closest to sun
My = Mercury
Very = Venus
Educated = Earth
Mother = Mars
Just = Jupiter
Showed = Saturn
Us = Uranus
Nine = Neptune
Planets = Pluto
Two M's but Mercury is closest ( think liquid !!)
2007-01-01 03:41:20 · answer #9 · answered by Daddybear 7 · 0⤊ 0⤋
because pluto is further away, making the circumferene of the orbital ring larger
2007-01-01 04:09:51 · answer #10 · answered by styce 4 · 0⤊ 0⤋