Posted by: Kyle
« on: September 07, 2018, 08:19:31 AM »Would it make more sense for Comet.OrbitalDistance to be Comet.CurrentDistance in line 2?
Posted by: Kyle
« on: September 07, 2018, 07:26:04 AM »AWESOME!
Posted by: Steve Walmsley
« on: September 07, 2018, 05:42:21 AM »Here is the code for C#
Code: [Select]
double AUTime = 0;
double OrbitTime = Math.Pow(Math.Pow(Comet.OrbitalDistance / 2, 3) / Comet.ParentStar.StarType.Mass, 0.5); // result in years
if (Comet.CurrentDistance > 1)
{
double CloserOrbitTime = Math.Pow(Math.Pow((Comet.CurrentDistance - 1) / 2, 3) / Comet.ParentStar.StarType.Mass, 0.5); // result in years
// time to move 1 AU at this distance in seconds
AUTime = ((OrbitTime - CloserOrbitTime) / 2) * (double) GlobalValues.SECONDSPERYEAR;
}
else
AUTime = 0.18 * (double) GlobalValues.SECONDSPERYEAR; // comet moves about 5.5 AU per year
double AUMoved = Timescale / AUTime;Posted by: Father Tim
« on: September 06, 2018, 11:07:46 PM »Knowing Steve, it's probably the actual formulae for meteors/comets (Start here: http://mathscinotes.com/2011/07/speed-of-a-meteor/) modified ever-so-slightly for Aurora's 360-day year.
Posted by: Kyle
« on: September 06, 2018, 08:06:41 PM »Hi, hoping Steve can answer this, I don't see that it's been answered anywhere.
What's the formula for how far a comet travels in a given time period?
When it's < 1 AU from the sun, it's a nice constant speed.
But farther out, comets tend to move slower and slower the farther away they get, and it's not clear exactly how the distance is determined.
Thanks!!
What's the formula for how far a comet travels in a given time period?
When it's < 1 AU from the sun, it's a nice constant speed.
But farther out, comets tend to move slower and slower the farther away they get, and it's not clear exactly how the distance is determined.
Thanks!!
