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ksodbartman
2004-Apr-26, 04:45 PM
At what angle is the plane of planets in our Solar System to the galactic plane? Also, do we know the inclination of the Sun's orbit around the galactic center to the galactic plane?

Many thanks!

Kaptain K
2004-Apr-26, 04:55 PM
Also, do we know the inclination of the Sun's orbit around the galactic center to the galactic plane?
The path of the Sun around the center of the galaxy is not at a constant inclination to the plane of the galactic disk. Due to the mass of the disk, the Sun oscillates up and down through the disk approximately 10 times per 220 million year orbit.

ngc3314
2004-Apr-26, 04:57 PM
At what angle is the plane of planets in our Solar System to the galactic plane? Also, do we know the inclination of the Sun's orbit around the galactic center to the galactic plane?

Many thanks!

The ecliptic plane, a good approximation to the average orbital plane of the Sun's planets, is inclined by about 60 degrees to the galactic plane.
(Edited to eliminate mistype...)

The sun's inclination to the galactic plane is quite small. Defining it more precisely is complicated by the nature of orbits in a distributed mass distribution - the period as measured by bobbing to either side of the plane is not the same as the measured from one perigalacticon to the next (which may in turn differ from that as measured by crossing the same direction rom the core in an inertial coordinate system). Star orbits are more like rose-petal diagrams than closed ellipses (except near bars, whem they can take interesting triple-lobed figure-8 patterns or rectangles wth rounded corners.).

George
2004-Apr-26, 09:48 PM
Due to the mass of the disk, the Sun oscillates up and down through the disk approximately 10 times per 220 million year orbit.

Cool. I would not have guessed this could be known even approximately. Is it based on our travels through spiral arms?