meeus33a.frink

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// Example 33.a from Meeus, to test planetary positions.

use planets.frink

d = #1992 December 20 00:00 TD#
println["Date is " + (d->JDE)]

[L,B,R] = Planet.Venus.getCoordinates[d]
[L0,B0,R0] = Planet.Earth.getCoordinates[d]

println["L:\t" + (L->"degrees")]
println["B:\t" + (B->"degrees")]
println["R:\t" + (R->"au")]

println[]
println["L0:\t" + (L0->"degrees")]
println["B0:\t" + (B0->"degrees")]
println["R0:\t" + (R0->"au")]

[x,y,z,d] = distanceBetweenSphericalCoordinates[L,B,R,L0,B0,R0]
println["x:\t" + (x->"au")]
println["y:\t" + (y->"au")]
println["z:\t" + (z->"au")]
println["d:\t" + (d->"au")]

delta = d / c
println["Light time is " + (delta->"days")]





View or download meeus33a.frink in plain text format


This is a program written in the programming language Frink.
For more information, view the Frink Documentation or see More Sample Frink Programs.

Alan Eliasen was born 17780 days, 17 hours, 17 minutes ago.