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change delta T formula and add planet phenomena function

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兔子
2022-05-16 20:42:15 +08:00
parent bb07e23238
commit 97c017be08
38 changed files with 4700 additions and 779 deletions
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basic/moon.go
+29 -39
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@@ -1052,18 +1052,7 @@ func MoonTrueDec(JD float64) float64 {
* 月球真赤经
*/
func MoonTrueRa(JD float64) float64 {
MoonLo := MoonApparentLo(JD)
MoonBo := MoonTrueBo(JD)
tmp := (Sin(MoonLo)*Cos(Sita(JD)) - Tan(MoonBo)*Sin(Sita(JD))) / Cos(MoonLo)
tmp = ArcTan(tmp)
if MoonLo >= 90 && MoonLo < 180 {
tmp = 180 + tmp
} else if MoonLo >= 180 && MoonLo < 270 {
tmp = 180 + tmp
} else if MoonLo >= 270 && MoonLo <= 360 {
tmp = 360 + tmp
}
return tmp
return LoToRa(JD, MoonApparentLo(JD), MoonTrueBo(JD))
}
/**
@@ -1382,6 +1371,7 @@ func HMoonHeight(JD, Lon, Lat, TZ float64) float64 {
return ArcSin(tmp2)
}
// 废弃
func GetMoonTZTime(JD, Lon, Lat, TZ float64) float64 { //实际中天时间{
JD = math.Floor(JD) + 0.5
ttm := MoonTimeAngle(JD, Lon, Lat, TZ)
@@ -1401,9 +1391,33 @@ func GetMoonTZTime(JD, Lon, Lat, TZ float64) float64 { //实际中天时间{
return JD1
}
func MoonCulminationTime(jde, lon, lat, timezone float64) float64 {
//jde 世界时，非力学时，当地时区 0时，无需转换力学时
//ra,dec 瞬时天球座标，非J2000等时间天球坐标
jde = math.Floor(jde) + 0.5
JD1 := jde + Limit360(360-MoonTimeAngle(jde, lon, lat, timezone))/15.0/24.0/0.9
limitHA := func(jde, lon, timezone float64) float64 {
ha := MoonTimeAngle(jde, lon, lat, timezone)
if ha < 180 {
ha += 360
}
return ha
}
for {
JD0 := JD1
stDegree := limitHA(JD0, lon, timezone) - 360
stDegreep := (limitHA(JD0+0.000005, lon, timezone) - limitHA(JD0-0.000005, lon, timezone)) / 0.00001
JD1 = JD0 - stDegree/stDegreep
if math.Abs(JD1-JD0) <= 0.00001 {
break
}
}
return JD1
}
func MoonTimeAngle(JD, Lon, Lat, TZ float64) float64 {
startime := Limit360(ApparentSiderealTime(JD-TZ/24)*15 + Lon)
timeangle := startime - HMoonApparentRa(JD-TZ/24, Lon, Lat, TZ)
timeangle := startime - HMoonApparentRa(JD, Lon, Lat, TZ)
if timeangle < 0 {
timeangle += 360
}
@@ -1667,20 +1681,7 @@ func HMoonApparentLo(JD float64) float64 {
}
func HMoonTrueRaDec(JD float64) (float64, float64) {
MoonLo := HMoonApparentLo(JD)
MoonBo := HMoonTrueBo(JD)
tmp := Sin(MoonBo)*Cos(Sita(JD)) + Cos(MoonBo)*Sin(Sita(JD))*Sin(MoonLo)
res := ArcSin(tmp)
tmp = (Sin(MoonLo)*Cos(Sita(JD)) - Tan(MoonBo)*Sin(Sita(JD))) / Cos(MoonLo)
tmp = ArcTan(tmp)
if MoonLo >= 90 && MoonLo < 180 {
tmp = 180 + tmp
} else if MoonLo >= 180 && MoonLo < 270 {
tmp = 180 + tmp
} else if MoonLo >= 270 && MoonLo <= 360 {
tmp = 360 + tmp
}
return tmp, res
return LoBoToRaDec(JD, HMoonApparentLo(JD), HMoonTrueBo(JD))
}
/*
@@ -1698,18 +1699,7 @@ func HMoonTrueDec(JD float64) float64 {
* 月球真赤经
*/
func HMoonTrueRa(JD float64) float64 {
MoonLo := HMoonApparentLo(JD)
MoonBo := HMoonTrueBo(JD)
tmp := (Sin(MoonLo)*Cos(Sita(JD)) - Tan(MoonBo)*Sin(Sita(JD))) / Cos(MoonLo)
tmp = ArcTan(tmp)
if MoonLo >= 90 && MoonLo < 180 {
tmp = 180 + tmp
} else if MoonLo >= 180 && MoonLo < 270 {
tmp = 180 + tmp
} else if MoonLo >= 270 && MoonLo <= 360 {
tmp = 360 + tmp
}
return tmp
return LoToRa(JD, HMoonApparentLo(JD), HMoonTrueBo(JD))
}
/**