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 17649 days, 5 hours, 41 minutes ago.