Pluto is a moon of Neptune. It is true? If false, tell me why Neptune only have 2 moon, not like other Jovian?

Question

No..no.. I mean it is a ex-moon of Neptune, not today. Why its orbit is to stange? I dont troble if 1million year from today, Nereid become a new Planet. By adding 200meter/sec to their orbital velocity, he can free from Neptune' gravity

Answer 1

Triton is believed to be (from its retrograde motion) a captured Kuiper Belt Object, Maybe that is what you have picked up? Triton is larger than Pluto (and indeed Eris) and had it not have been captured, would undoubtedly have been discovered before Pluto was and have been declared a planet.

Neptune has 13 known moons.

Triton was discovered in 1846, just 17 days after Neptune was itself discovered. It took over a hundred years to find another.

Nereid was found in 1949 (by Kuiper who discovered Miranda, Uranus' fifth moon in 1948). Then there were no further discoveries till the Space Age began.

From July to September 1989, Voyager 2 discovered six new Neptunian moons. Of these, the irregularly shaped Proteus is notable for being as large as a body of its density can be without being pulled into a spherical shape by its own gravity. Although the second most massive Neptunian moon, it is only one quarter of one percent of the mass of Triton.

Neptune's innermost four moons, Naiad, Thalassa, Despina, and Galatea, orbit close enough to be within Neptune's rings. The next farthest out, Larissa was originally discovered in 1981 when it had blocked a star. This was attributed to ring arcs, but when Voyager 2 observed Neptune in 1989, it was found to have been caused by the moon.

Five new irregular moons discovered between 2002 and 2003 were announced in 2004.

They are, in order outwards from the planet:

1 Naiad
2 Thalassa
3 Despina
4 Galatea
5 Larissa
6 Proteus
7 Triton
8 Nereid
9 S/2002 N 1†
10 S/2002 N 2†
11 S/2002 N 3†
12 Psamathe
13 S/2002 N 4†

† awaiting naming.

Answer 2

Neptune has more than 2 moons - I think 10 at last count. Like the poster above says the idea of Pluto having been a moon of Neptune's which escaped was abandoned long ago.

Answer 3

Pluto is now classified as a dwarf planet, and orbits the Sun, not Neptune.

Answer 4

to be a moon of neptune, pluto would have to orbit neptune
pluto orbits the sun, and was therefore a planet
now it is something else, but definitely not a moon of neptune

Answer 5

Pluto is a dwarf planet. Neptunes may only havve captured a couple of moons, or it's other moons mey not have been detected yet.

Did you know that Earth has a second moon called Cruithne?

http://en.wikipedia.org/wiki/3753_Cruithne

Answer 6

slightly a pair of those, yet not probable fullyyt anybody of them the professional astronomical community had long been quite ambivalent approximately calling Pluto a planet, as quickly because it become found out in simple terms how small it become relative to the gas giants in simple terms in-gadget from it. it quite is not plenty larger than our Earth's moon, which kind of made it a 'vulnerable-sister' between the named planets. Then quite a few Kuiper Belt gadgets began to be found, and the astronomy community found out that there have been probably dozens or maybe hundreds of rocky/icy bodies of actually comparable length interior the Kuiper Belt. so they have been finding on the potential of having dozens of 'new planets', which ends up in a physically powerful deal of bewilderment. the placement is quite akin to lower back whilst the 1st super asteroids interior the asteroid belt have been found. Ceres and Pallas (and another, I remember..??) have been initially referred to as new 'planets', yet whilst it become found out that they have got been heavily smaller than our moon, and there have been quite a number of those asteroids in an identical area, they have been re-labeled as 'minor planets' (or 'planetoids'). they did not get any smaller or get their emotions harm because of the re-definition. It in simple terms become familiar. comparable ingredient is going for Pluto. Its nevertheless the comparable rocky/icy physique it become in the past, and its emotions have not been harm by utilising human beings on the earth changing its description to 'dwarf planet'. Pluto does have an orbit quite greater peculiar than the present 8-planets, and it quite is small whilst in comparison with lots of the planets, nevertheless not plenty smaller than Mercury to make that the only determination. It in simple terms isn't the dominant gravitational physique in its orbit

Answer 7

months ago, Pluto was still a planet by herself, so how could it be a moon by now ?

Answer 8

Pluto is no longer so... it is now asteroid number 134340...so it is not a planet or a moon nor are its moons moons any longer :(

Answer 9

its a dwarf planet not a moon

Answer 10

Are you trying to get answers for your SPM exams?