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feat: 新增月掩与日月食地理绘图并提升观测计算精度

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- 新增月掩恒星和行星：支持搜索、掩甚点、全球掩带及固定地点轨迹计算
- 支持恒星星表坐标转换、有限盘面行星接触事件和月掩 SVG 输出
- 新增日月食及月掩全球投影图、时间标记和 GeoJSON 地理数据接口
- 扩展日食中心线、南北界及偏食足迹采样，支持极区投影
- 修正站心时角、月出月落、月球视半径、折射和恒星自行计算
- 优化内外行星事件搜索、边界选择、极端输入处理和计算稳定性
This commit is contained in:
兔子
2026-08-06 12:00:56 +08:00
parent 25dc7ac0bc
commit 9ee2163cc7
137 changed files with 21770 additions and 1746 deletions
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basic/jupiter_events.go
+33 -9
View File
@@ -64,6 +64,9 @@ func jupiterRADerivativeN(jde, delta float64, n int) float64 {
func jupiterConjunctionFull(jde, degree float64, next uint8) float64 {
//0=last 1=next
if !isFiniteFloat(jde) || !isFiniteFloat(degree) {
return math.NaN()
}
daysPerDegree := JUPITER_S_PERIOD / 360
currentDelta := jupiterSunLongitudeDelta(jde, degree, false)
if next == 0 {
@@ -72,20 +75,29 @@ func jupiterConjunctionFull(jde, degree float64, next uint8) float64 {
jde += daysPerDegree * currentDelta
}
estimateJD := jde
for {
converged := false
for i := 0; i < eventNewtonMaxIterations; i++ {
prevJD := estimateJD
longitudeDelta := jupiterSunLongitudeDelta(prevJD, degree, true)
longitudeSlope := (jupiterSunLongitudeDelta(prevJD+0.000005, degree, true) - jupiterSunLongitudeDelta(prevJD-0.000005, degree, true)) / 0.00001
estimateJD = prevJD - longitudeDelta/longitudeSlope
if math.Abs(estimateJD-prevJD) <= 0.00001 {
nextJD := prevJD - longitudeDelta/longitudeSlope
estimateJD = nextJD
if math.Abs(nextJD-prevJD) <= 0.00001 {
converged = true
break
}
}
if !converged {
return math.NaN()
}
return TD2UT(estimateJD, false)
}
func jupiterConjunction(jde, degree float64, next uint8) float64 {
//0=last 1=next
if !isFiniteFloat(jde) || !isFiniteFloat(degree) {
return math.NaN()
}
daysPerDegree := JUPITER_S_PERIOD / 360
currentDelta := jupiterSunLongitudeDelta(jde, degree, false)
if next == 0 {
@@ -94,24 +106,36 @@ func jupiterConjunction(jde, degree float64, next uint8) float64 {
jde += daysPerDegree * currentDelta
}
estimateJD := jde
for {
converged := false
for i := 0; i < eventNewtonMaxIterations; i++ {
prevJD := estimateJD
longitudeDelta := jupiterSunLongitudeDeltaN(prevJD, degree, true, jupiterEventSearchN)
longitudeSlope := (jupiterSunLongitudeDeltaN(prevJD+0.000005, degree, true, jupiterEventSearchN) - jupiterSunLongitudeDeltaN(prevJD-0.000005, degree, true, jupiterEventSearchN)) / 0.00001
estimateJD = prevJD - longitudeDelta/longitudeSlope
if math.Abs(estimateJD-prevJD) <= jupiterPhaseCoarseTolerance {
nextJD := prevJD - longitudeDelta/longitudeSlope
estimateJD = nextJD
if math.Abs(nextJD-prevJD) <= jupiterPhaseCoarseTolerance {
converged = true
break
}
}
for {
if !converged {
return math.NaN()
}
converged = false
for i := 0; i < eventNewtonMaxIterations; i++ {
prevJD := estimateJD
longitudeDelta := jupiterSunLongitudeDelta(prevJD, degree, true)
longitudeSlope := (jupiterSunLongitudeDelta(prevJD+0.000005, degree, true) - jupiterSunLongitudeDelta(prevJD-0.000005, degree, true)) / 0.00001
estimateJD = prevJD - longitudeDelta/longitudeSlope
if math.Abs(estimateJD-prevJD) <= 0.00001 {
nextJD := prevJD - longitudeDelta/longitudeSlope
estimateJD = nextJD
if math.Abs(nextJD-prevJD) <= 0.00001 {
converged = true
break
}
}
if !converged {
return math.NaN()
}
return TD2UT(estimateJD, false)
}