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Erg/sec
| Глоссарий по астрономии |
= 1e-10 kilowatts.
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Excentrique, французский
The eccentricity of an ellipse (planetary orbit) is the ratio of the distance between the focii and the major axis. equivalently the eccentricity is (ra-rp)/(ra+rp) where ra is the apoapsis distance and rp is the periapsis distance.
Ellipse, французский
Oval. that the orbits of the planets are ellipses, not circles, was first discovered by johannes kepler based on the careful observations by tycho brahe.
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