View or download perihelion.frink in plain text format
// Calculates perihelion time. This may not be quite accurate because
// I may not be running enough terms in the position of the sun.
use sun.frink
mindist = 2 au
maxdist = 0 au
starttime = #2016#
endtime = #2017#
mintime = starttime
maxtime = starttime
tint = new interval[starttime, endtime]
println["Interval guess is: " + (sunDistance[tint]->"km")]
for time = starttime to endtime step minute
{
dist = sunDistance[time]
// println[dist]
if (dist < mindist)
{
mindist = dist
mintime = time
}
if (dist > maxdist)
{
maxdist = dist
maxtime = time
}
}
println["Minimum distance is " + (mindist -> "km") + ", " + (mindist -> "au") + ", " + (mindist-> "miles") + " at $mintime."]
println["Maximum distance is " + (maxdist -> "km") + ", " + (maxdist -> "au") + ", " + (maxdist-> "miles") + " at $maxtime."]
tint = new interval[starttime, endtime]
println["Interval guess is: " + (sunDistance[tint]->"km")]
View or download perihelion.frink in plain text format
This is a program written in the programming language Frink.
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Alan Eliasen was born 18321 days, 23 hours, 20 minutes ago.