On 04/03/2013 07:58 PM, Archimedes Plutonium wrote: > On Apr 3, 6:24 pm, Archimedes Plutonium > <plutonium.archime...@gmail.com> wrote: >> On Apr 3, 3:47 pm, Archimedes Plutonium > (snipped) >> >> Now I am having a hard time of locating a vital piece of information. >> I need to know the direction of Sun's motion, its 220 km/sec relative >> to the plane of the ecliptic. I would hazard to guess that the motion >> is parallel to the plane of ecliptic, in other words the linear >> forward motion of the Sun is the plane ecliptic itself as if the plane >> had a arrow of direction. >> >> I intuitively find it hard to think that the motion of the Sun is >> anywhere off the plane of the ecliptic.
I suspect that the 3-D rectangular origin (0, 0, 0) in rectangular coordinates is or is near the centre of mass (barycentre) of the solar system.
The ecliptic is a reference plane that approximates very well the mean orbit of the earth around the sun.
>> >> I had a look in Kaufmann's text Universe on page 461 and he talks >> about the Sun relative to stars nearby and the Perseus arm, Orion >> bridge and Sagittarius arm. I looked in Wikipedia for some light shed >> on the question with no luck. >> >> So the question is quite simple, as to what is the direction of motion >> of the Sun of its 220km/sec relative to the Plane of the Ecliptic? Is >> the direction in the plane or is it some angle off that plane?
I sincerely doubt that people in solar dynamics would use an ecliptic reference plane where the sun would move at 220 km/sec .
In the old days, the proper motions of extra-solar stars relative to the earth were not known.
<< The Sun travels in a nearly circular orbit (the solar circle) about the center of the Milky Way at a speed of about 220 km/s at a radius of 8 ± 0.65 kpc from the center, which can be taken as the rate of rotation of the Milky Way itself at this radius. >>
> > Let me phrase my question more clearly. > > Let me define the Sun's ecliptic as the plane in which the Sun's > equator radiates outward, so that the Sun's equator plane forms the > Solar System ecliptic. Now it happens from Maxwell Equations in EM > gravity that all the planets lie mostly or near that ecliptic. When > electricity and magnetism forms gravity, then the bodies would lie > near or on that ecliptic. > > Now the question of direction of the Sun's 220 km/sec is a vector > direction of an angle from the center of the Sun. Is the Sun moving > its 220km/sec of a vector that is in that equator and thus ecliptic? > Or is that 220km/sec some angle off of that equator-ecliptic plane? > For instance is the 220km/sec in a direction of the poles of the Sun > and thus the motion is 90degrees from the ecliptic? If the direction > is 0degrees then the 220km/sec is in the ecliptic. > > Now if the Sun is 0degrees of its 220km/sec, then the question is, at > what day of the Earth year is the Sun moving to? In other words, as > the Earth revolves around the Sun, there is one day of that revolution > in which the Sun is moving in Space in that direction. > > -- > > Google seems to have stopped doing author-archives as of 2012. > Only Drexel's Math Forum has done a excellent, simple and fair author- > archiving of AP posts to sci.math for the past several years as seen > here: > > http://mathforum.org/kb/profile.jspa?userID=499986 > > Archimedes Plutonium > http://www.iw.net/~a_plutonium > whole entire Universe is just one big atom > where dots of the electron-dot-cloud are galaxies >