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148 lines
3.5 KiB
Go
148 lines
3.5 KiB
Go
package basic
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import (
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"math"
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"b612.me/astro/planet"
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. "b612.me/astro/tools"
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)
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func JupiterL(JD float64) float64 {
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return planet.WherePlanet(4, 0, JD)
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}
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func JupiterB(JD float64) float64 {
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return planet.WherePlanet(4, 1, JD)
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}
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func JupiterR(JD float64) float64 {
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return planet.WherePlanet(4, 2, JD)
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}
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func AJupiterX(JD float64) float64 {
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l := JupiterL(JD)
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b := JupiterB(JD)
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r := JupiterR(JD)
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el := planet.WherePlanet(-1, 0, JD)
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eb := planet.WherePlanet(-1, 1, JD)
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er := planet.WherePlanet(-1, 2, JD)
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x := r*Cos(b)*Cos(l) - er*Cos(eb)*Cos(el)
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return x
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}
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func AJupiterY(JD float64) float64 {
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l := JupiterL(JD)
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b := JupiterB(JD)
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r := JupiterR(JD)
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el := planet.WherePlanet(-1, 0, JD)
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eb := planet.WherePlanet(-1, 1, JD)
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er := planet.WherePlanet(-1, 2, JD)
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y := r*Cos(b)*Sin(l) - er*Cos(eb)*Sin(el)
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return y
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}
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func AJupiterZ(JD float64) float64 {
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//l := JupiterL(JD)
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b := JupiterB(JD)
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r := JupiterR(JD)
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// el := planet.WherePlanet(-1, 0, JD)
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eb := planet.WherePlanet(-1, 1, JD)
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er := planet.WherePlanet(-1, 2, JD)
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z := r*Sin(b) - er*Sin(eb)
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return z
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}
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func AJupiterXYZ(JD float64) (float64, float64, float64) {
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l := JupiterL(JD)
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b := JupiterB(JD)
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r := JupiterR(JD)
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el := planet.WherePlanet(-1, 0, JD)
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eb := planet.WherePlanet(-1, 1, JD)
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er := planet.WherePlanet(-1, 2, JD)
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x := r*Cos(b)*Cos(l) - er*Cos(eb)*Cos(el)
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y := r*Cos(b)*Sin(l) - er*Cos(eb)*Sin(el)
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z := r*Sin(b) - er*Sin(eb)
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return x, y, z
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}
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func JupiterSeeRa(JD float64) float64 {
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lo, bo := JupiterSeeLoBo(JD)
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sita := Sita(JD)
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ra := math.Atan2((Sin(lo)*Cos(sita) - Tan(bo)*Sin(sita)), Cos(lo))
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ra = ra * 180 / math.Pi
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return Limit360(ra)
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}
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func JupiterSeeDec(JD float64) float64 {
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lo, bo := JupiterSeeLoBo(JD)
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sita := Sita(JD)
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dec := ArcSin(Sin(bo)*Cos(sita) + Cos(bo)*Sin(sita)*Sin(lo))
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return dec
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}
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func JupiterSeeRaDec(JD float64) (float64, float64) {
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lo, bo := JupiterSeeLoBo(JD)
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sita := Sita(JD)
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ra := math.Atan2((Sin(lo)*Cos(sita) - Tan(bo)*Sin(sita)), Cos(lo))
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ra = ra * 180 / math.Pi
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dec := ArcSin(Sin(bo)*Cos(sita) + Cos(bo)*Sin(sita)*Sin(lo))
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return Limit360(ra), dec
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}
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func EarthJupiterAway(JD float64) float64 {
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x, y, z := AJupiterXYZ(JD)
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to := math.Sqrt(x*x + y*y + z*z)
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return to
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}
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func JupiterSeeLo(JD float64) float64 {
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x, y, z := AJupiterXYZ(JD)
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to := 0.0057755183 * math.Sqrt(x*x+y*y+z*z)
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x, y, z = AJupiterXYZ(JD - to)
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lo := math.Atan2(y, x)
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bo := math.Atan2(z, math.Sqrt(x*x+y*y))
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lo = lo * 180 / math.Pi
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bo = bo * 180 / math.Pi
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lo = Limit360(lo)
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//lo-=GXCLo(lo,bo,JD)/3600;
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//bo+=GXCBo(lo,bo,JD);
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lo += HJZD(JD)
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return lo
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}
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func JupiterSeeBo(JD float64) float64 {
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x, y, z := AJupiterXYZ(JD)
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to := 0.0057755183 * math.Sqrt(x*x+y*y+z*z)
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x, y, z = AJupiterXYZ(JD - to)
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//lo := math.Atan2(y, x)
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bo := math.Atan2(z, math.Sqrt(x*x+y*y))
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//lo = lo * 180 / math.Pi
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bo = bo * 180 / math.Pi
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//lo+=GXCLo(lo,bo,JD);
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//bo+=GXCBo(lo,bo,JD)/3600;
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//lo+=HJZD(JD);
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return bo
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}
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func JupiterSeeLoBo(JD float64) (float64, float64) {
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x, y, z := AJupiterXYZ(JD)
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to := 0.0057755183 * math.Sqrt(x*x+y*y+z*z)
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x, y, z = AJupiterXYZ(JD - to)
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lo := math.Atan2(y, x)
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bo := math.Atan2(z, math.Sqrt(x*x+y*y))
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lo = lo * 180 / math.Pi
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bo = bo * 180 / math.Pi
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lo = Limit360(lo)
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//lo-=GXCLo(lo,bo,JD)/3600;
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//bo+=GXCBo(lo,bo,JD);
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lo += HJZD(JD)
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return lo, bo
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}
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func JupiterMag(JD float64) float64 {
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AwaySun := JupiterR(JD)
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AwayEarth := EarthJupiterAway(JD)
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Away := planet.WherePlanet(-1, 2, JD)
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i := (AwaySun*AwaySun + AwayEarth*AwayEarth - Away*Away) / (2 * AwaySun * AwayEarth)
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i = ArcCos(i)
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Mag := -9.40 + 5*math.Log10(AwaySun*AwayEarth) + 0.0005*i
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return FloatRound(Mag, 2)
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}
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