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What planet was to the farthest from the sun until 1999?
Pluto used to be the outermost planet, except that sometimes it became Neptune because Pluto's elliptical orbit is far from circular. From 1979 to 1999 Neptune was the farthest planet from the Sun and remains the farthest from the Sun today, because Pluto us no longer defined as a planet.
Until 1999 which planet was the farthest?
it used to vary between neptune and Pluto due to plutos unusual orbit. but since Pluto was declared not a planet. it is neptune.
What planet was farthest from the sun until 1999?
The planet that was farthest from the Sun from February 7, 1979 until February 11, 1999 was Uranus. Though Pluto was considered the outermost planet in the solar system since its discovery, its highly elliptical orbit sometimes brought it closer to the Sun than Uranus.
What was the outermost planet until march 1999?
Pluto was considered the farthest planet until September 13th, 2006 when it was reclassified as a dwarf planet. But the correct answer would be neptune -goober;P
When Pluto was considered a planet why was neptune the farthest planet from the sun from 1979 to 1999?
Neptune's orbit is more elliptical than Pluto's, causing their orbits to sometimes intersect. From 1979 to 1999, Neptune's elliptical orbit brought it closer to the sun than Pluto, making Neptune the farthest planet from the sun during that time.
How many years Neptune became the farthest planet in the solar system?
Neptune has always been the farthest planet, but we didn't always know that. On August 24, 2006, when the International Astronomical Union (IAU) defined what it means to be a "planet", Neptune earned it's badge as the most distant (from the sun) planet in our solar system. Prior to that, when Pluto was referred to as a planet, it last crossed inside of Neptune's orbit on February 7, 1979 leaving Neptune as the most distant planet until February 11, 1999. Pluto's orbit crosses inside of Neptune's orbit for 20 years out of every 248.
Which planet was farthest away from the sun from 1978-1999?
From 1930 (when Pluto was discovered) to 1978, Pluto was the most distant planet. In 1978, Pluto slipped inside Neptune's orbit. Neptune was the farthest planet from 1978 to 1999, and Pluto (which has a fairly high eccentricity) was farther away from 1999 to 2006. In 2006, the International Astronomical Union "demoted" Pluto from Planet to Dwarf Planet, meaning that Neptune is once again the most distant planet.
Which planet will be farthest away from the sun in 1999?
Back in 1999, Pluto was still a planet, but was nearer to the Sun than Neptune was from1979 to1999. Pluto's orbit is fairly eccentric; during parts of its orbit, it is nearer to the Sun than Neptune is. So, answer: Neptune was farthest, but it became Pluto again some time in 1999.
Until 1999 what was the planet ferthest from the sun?
Neptune.
What planet until 1999 was the furtheset from the sun?
Neptune
Why did neptune become the farthest planet from 1979 to 1999?
Plutos orbit is highly eccentric - during one rotation of the sun its distance from the sun can vary considerably. For 20 years of each of its orbit - a small fraction, it is closer to the sun than Neptune, which has much more of a regular orbit. Neptune is now the furthest planet again as of 2006. This time its for another reason - Pluto is no longer classed as a planet, but is instead a Dwarf Planet.
What planet was the farthest away from the sun in 1978-1999?
Pluto
