Oort Constants

From Wikipedia, the free encyclopedia

The Oort Constants, named after Jan Oort, are empirically measurable constants relating to the sun's distance from and motion relative to the galactic centre.

A=\frac{1}{2}(\frac{V_{o}}{R_{o}}-\frac{dv}{dr})
B=-\frac{1}{2}(\frac{V_{o}}{R_{o}}+\frac{dv}{dr})


A = 14.82 +/- 0.84 km/s/kpc

B = -12.37 +/- 0.64 km/s/kpc


Vo is the orbital velocity of the Sun, and the Ro is Sun's distance form the centre of the Galaxy.

reference: http://astroprofspage.com/archives/75

reference: M. Feast and P. Whitelock, Monthly Notices of the Royal Astronomical Society, 291, 683-693 (1997).

 This astronomy related article is a stub. You can help Wikipedia by expanding it.

[edit] Further reading