Recent content by swelzba9

I am trying to figure out the speed of Halley's Comet in km/sec. at aphelion and perihelion... my answers just don't seem to be practical.. please help thanks... I am using v² = (4Π²a³) / (P²) * ((2/r) - (1/a)) where a = mean distance from the sun (semimajor axis of the ellipse) P=...

I am trying to figure out the speed of Halley's Comet in km/sec. at aphelion and perihelion I am using v² = (4Π²a³) / (P²) * ((2/r) - (1/a)) where a = mean distance from the sun (semimajor axis of the ellipse) P= sidereal period (75 years) r = distance of the object from the...