Why the gas planets move by rotating

[Diamonds]

Does the planet actually rotate around its axis and moves ahead in its orbit just the same amount of kilometers.

It is easy to count when we know velocity of the planet in its orbit = a, and the velocity it rotates around its axis = b.  We just divide a / b. 

It seems like the rocky planets and the gas planets move using different kind of method.  The rocky planets move so fast like they were shot by a gun or a Cannon. But gas planets really rotate and move almost the same amount of kilometers. They actually do not move ahead at all but they just rotate around their axis.

 

Mercury a = 47, 87 / b = 0.0030244 that is 15 827. 446 so It rotates one kilometer and at the same time moves ahead 15 827.446 kilometers

Venus a = 35.02 / b = 0.00181 that is 19 341.195

Earth a = 29.8 / b = 0.465013 that is 64.084

Mars a= 24.077 / b = 0.2406 that is 100.035

Jupiter a = 13.069 / b = 12.58 that is 1.0389

Saturn a = 9.67 / b = 9.87 that is 0.979493

Uranus a = 6.83 / b = 2.588 that is 2.641

Neptune a = 5.47 / b = 2.685 that is 2.040

Pluto a = 4.749 / b = 0.0134 that is 352.055

Ceres a = 17.882 / b = 0.093 that is 191.708

Vesta a = 19.34 / b = 0.093 that is 206.65

Pallas a = 17.65 / b = 0.0636 that is 277.289

So for instance Jupiter when rotates 1 km at the same time moves ahead 1.0389 km. So It moves ahead by rotating?

 

[Vmedvil]

On 2/17/2025 at 2:32 PM, Diamonds said:

Does the planet actually rotate around its axis and moves ahead in its orbit just the same amount of kilometers.

It is easy to count when we know velocity of the planet in its orbit = a, and the velocity it rotates around its axis = b.  We just divide a / b. 

It seems like the rocky planets and the gas planets move using different kind of method.  The rocky planets move so fast like they were shot by a gun or a Cannon. But gas planets really rotate and move almost the same amount of kilometers. They actually do not move ahead at all but they just rotate around their axis.

 

Mercury a = 47, 87 / b = 0.0030244 that is 15 827. 446 so It rotates one kilometer and at the same time moves ahead 15 827.446 kilometers

Venus a = 35.02 / b = 0.00181 that is 19 341.195

Earth a = 29.8 / b = 0.465013 that is 64.084

Mars a= 24.077 / b = 0.2406 that is 100.035

Jupiter a = 13.069 / b = 12.58 that is 1.0389

Saturn a = 9.67 / b = 9.87 that is 0.979493

Uranus a = 6.83 / b = 2.588 that is 2.641

Neptune a = 5.47 / b = 2.685 that is 2.040

Pluto a = 4.749 / b = 0.0134 that is 352.055

Ceres a = 17.882 / b = 0.093 that is 191.708

Vesta a = 19.34 / b = 0.093 that is 206.65

Pallas a = 17.65 / b = 0.0636 that is 277.289

So for instance Jupiter when rotates 1 km at the same time moves ahead 1.0389 km. So It moves ahead by rotating?

 

This is interesting to me show me how you derived your answers and what equations were used.

[Moontanman]

On 2/17/2025 at 2:32 PM, Diamonds said:

Does the planet actually rotate around its axis and moves ahead in its orbit just the same amount of kilometers.

It is easy to count when we know velocity of the planet in its orbit = a, and the velocity it rotates around its axis = b.  We just divide a / b. 

It seems like the rocky planets and the gas planets move using different kind of method.  The rocky planets move so fast like they were shot by a gun or a Cannon. But gas planets really rotate and move almost the same amount of kilometers. They actually do not move ahead at all but they just rotate around their axis.

 

Mercury a = 47, 87 / b = 0.0030244 that is 15 827. 446 so It rotates one kilometer and at the same time moves ahead 15 827.446 kilometers

Venus a = 35.02 / b = 0.00181 that is 19 341.195

Earth a = 29.8 / b = 0.465013 that is 64.084

Mars a= 24.077 / b = 0.2406 that is 100.035

Jupiter a = 13.069 / b = 12.58 that is 1.0389

Saturn a = 9.67 / b = 9.87 that is 0.979493

Uranus a = 6.83 / b = 2.588 that is 2.641

Neptune a = 5.47 / b = 2.685 that is 2.040

Pluto a = 4.749 / b = 0.0134 that is 352.055

Ceres a = 17.882 / b = 0.093 that is 191.708

Vesta a = 19.34 / b = 0.093 that is 206.65

Pallas a = 17.65 / b = 0.0636 that is 277.289

So for instance Jupiter when rotates 1 km at the same time moves ahead 1.0389 km. So It moves ahead by rotating?

 

I have some doubt that rotation contributes to forward motion in Jupiter's orbit, I would have to see evidence of a mechanism for this. 

[Diamonds]

At first I did not know easy way how to count this. So I used other simple way. 

1. Orbital speed 13.0697 km/sec multiplied by orbital period 11.862 years = 374335776 seconds and we get lenght of the orbit = 4 892 456 291 km. So it takes 11.862 years to go around the sun. 

2. The circumference of Jupiter 2pi x r = 449112.744 km. 

3. In one rotation period = 9.9258 h = 35730 seconds Jupiter rotates 449112.744 km. 

4. Because there are 31557600 seconds in one year we divide 31557600 / 35730 = 883.224 that is how many times in one year Jupiter rotates around it axis. 

5. But its orbital period is 11.862 years so we multiply 883.224 x 11.862 = 10476.80 that is how many times Jupiter rotates in 11.862 years and during that time it moves in its orbit 4 892 456 291 km. 

6. Because Jupiters circumference is 449112.744 km we multiply that by 10476.80 = 4 705 264 396 that is how many kilometers Jupiter rotates around its axis in 11.862 years. 

7. Then we just divide 4 892 456 291 / 4 705 264 396 = 1. 03978

So Jupiter moves in its orbit 1.03978 km and at the same time rotates around its axis 1.0000 km. So it almost floats in the space just keep spinning around its axis. 

This is how I first calculated this problem but later I noticed that the same result is given by dividing 

Orbital speed / rotation velocity

And it is very simple in that way. 

 

 

 

[Diamonds]

Because the Milky Way Galaxy is mainly almost all Gas too I have tried to calculate how it rotates around and moves ahead. Is It just the same : one kilometer around its axis and one kilometer ahead in the space. 

I have used an estimated time when Milky Way and Andromeda collide too and it seems like : One kilometer ahead = one kilometer around. 

It is kind of strange how gas planets and galaxies float through space just by spinning around. 

 

 

[OceanBreeze]

The orbital speed of a planet with a circular orbit around a star, is given by v = (G M / r )^1/2, where G = 6.674E- 11 Nm ² / kg ² ,  M is the mass of the star in kg, and  r is the radius of the orbit in meters.

Example: Our Sun’s mass = 1.988E30 kg

G = 6.674E-11 Nm² /kg²

GM = 1.326 E20 Nm²

Radius of Earth’s orbit around the sun = 148E9 m

Earth’s orbital speed = (1.326 E20 Nm²/ 148E9 m)^1/2 = 29,932 m/s or 29.9 km/s

Using the same method for Jupiter (Jupiter’s r is 762E9 m) yields 13.2 km/s orbital speed.

As far as linking a planet’s orbital speed to its rotational speed, no such exact mathematical relationship exists.

A planet’s rotational speed is determined from observation.

Some people have taken the observed rotational speed and tried fitting it to planets mathematically with only limited success. Such contrived equations will not hold in the general case.

A planet’s rotational speed is thought to be linked to their formation history, particularly the size of the donut-shaped disk of gas and dust that circles young stars from which the planets emerge.

The earliest stage of giant gas planet formation is thought to be the formation of a solid core made of heavy elements (rocks and ices). If the core is massive enough (a few times the mass of Earth), it can accrete hydrogen and helium gas from the disk. As gas is accreted onto the planet, it increases the total angular momentum of the world, which, in turn, leads to rapid rotation. The exact details of these processes and how the rotation of the planet evolves with time are yet to be determined, however.

There is no such thing as a planet advancing through space by rotating!

A wheel advances by rotating on a surface. Planets have no surface to rotate against so the idea of a planet advancing through space due to rotation is absurd.

[Diamonds]

4 hours ago, OceanBreeze said:

Planets have no surface to rotate against so the idea of a planet advancing through space due to rotation is absurd

Yes I know even if we talk only about GAS planets not about rocky planets. Even more absurd it is that galaxies should move by rotating.  For everyone knows about their REDSHIFT. However there are still questions that need to be answered. 

Why Saturn seems to rotate even more than it goes ahead in its orbit?

Rotates 1.0 km and goes ahead just 0.979 km. If there is any sense comparing orbital speed and rotation velocity. At least I have used two ways to calculate this thing and not yet understand what might be wrong ......

Redshift surely makes this idea very absurd. Not all galaxies can be so slow than I suggest. Sorry about this being so ridiculous.

 

[Moontanman]

I would think it more likely that the orbital speed influences rotational speed than the other way around. I see no mechanism for the rotation to influence the orbital speed. I also see no reason that gas Giants or ice giants would be any different than the rocky planets, Venus and Mercury would also seem to be extreme outliers to the idea that rotation influences orbital speed. Then you have Earth and Mars which rotate in the same time frame, more or less 24 hours, and we know the rotation of the Earth has changed over the Billions of years we have data on. 

@Diamonds Show us a mechanism not simply some odd correlation!  

[Diamonds]

So I tried to find out the mechanism or the law. The only way seems to be making PAIRS out of these planets. Each pair seems to be kind of alike. 

Neptune + Uranus 

Saturn + Jupiter

Mars + Earth

Venus + Mercury

Each pair have got nearly same : orbital speed, rotation period, density, size and so on at least compared to the other pair. 

If there is any law it must be between the planet pairs. In some cases it seems to be like 

Orbital speed = 2 x compared to the other pair

Rotation velocity = 1 / 2 x compared to the other pair

I ought to study these things more to find out the exact laws. And I ought to study the inclanation and eccentricity too but I am not able to do that. Somehow I have this feeling that it has to be because there are laws concerning the planet pairs but I can not find out the exact mechanisim or laws at least yet.

I am afraid this is all I can say about this subject. And I know very well that you are going to deny those planet pairs having nearly same kind of qualities.