fix: 修正行星事件边界与留点计算
- 统一 UT 事件时刻与 TT 查询时刻的边界判断 - 将外行星留点搜索锚定到对应冲日周期 - 修正水星、金星合日、留、大距事件选择 - 统一七大行星视位置计算辅助逻辑 - 增加公开 Last/Next 边界和 JPL/NAOJ 基线回归测试
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+66
-65
@@ -40,6 +40,28 @@ func saturnSunLongitudeDeltaN(jde, degree float64, filter bool, n int) float64 {
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return sub
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}
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func saturnRADerivative(jde, delta float64) float64 {
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sub := SaturnApparentRa(jde+delta) - SaturnApparentRa(jde-delta)
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if sub > 180 {
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sub -= 360
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}
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if sub < -180 {
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sub += 360
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}
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return sub / (2 * delta)
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}
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func saturnRADerivativeN(jde, delta float64, n int) float64 {
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sub := SaturnApparentRaN(jde+delta, n) - SaturnApparentRaN(jde-delta, n)
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if sub > 180 {
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sub -= 360
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}
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if sub < -180 {
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sub += 360
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}
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return sub / (2 * delta)
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}
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func saturnConjunctionFull(jde, degree float64, next uint8) float64 {
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//0=last 1=next
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daysPerDegree := SATURN_S_PERIOD / 360
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@@ -94,113 +116,92 @@ func saturnConjunction(jde, degree float64, next uint8) float64 {
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}
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func LastSaturnConjunction(jde float64) float64 {
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return saturnConjunction(jde, 0, 0)
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return inclusiveLastPhaseEvent(jde, 0, saturnConjunction)
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}
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func NextSaturnConjunction(jde float64) float64 {
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return saturnConjunction(jde, 0, 1)
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return inclusiveNextPhaseEvent(jde, 0, saturnConjunction)
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}
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func LastSaturnOpposition(jde float64) float64 {
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return saturnConjunction(jde, 180, 0)
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return inclusiveLastPhaseEvent(jde, 180, saturnConjunction)
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}
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func NextSaturnOpposition(jde float64) float64 {
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return saturnConjunction(jde, 180, 1)
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return inclusiveNextPhaseEvent(jde, 180, saturnConjunction)
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}
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func NextSaturnEasternQuadrature(jde float64) float64 {
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return saturnConjunction(jde, 90, 1)
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return inclusiveNextPhaseEvent(jde, 90, saturnConjunction)
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}
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func LastSaturnEasternQuadrature(jde float64) float64 {
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return saturnConjunction(jde, 90, 0)
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return inclusiveLastPhaseEvent(jde, 90, saturnConjunction)
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}
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func NextSaturnWesternQuadrature(jde float64) float64 {
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return saturnConjunction(jde, 270, 1)
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return inclusiveNextPhaseEvent(jde, 270, saturnConjunction)
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}
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func LastSaturnWesternQuadrature(jde float64) float64 {
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return saturnConjunction(jde, 270, 0)
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return inclusiveLastPhaseEvent(jde, 270, saturnConjunction)
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}
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func saturnRetrograde(jde float64, searchBeforeOpposition bool) float64 {
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//0=last 1=next
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raRate := func(jde float64, delta float64) float64 {
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sub := SaturnApparentRa(jde+delta) - SaturnApparentRa(jde-delta)
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if sub > 180 {
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sub -= 360
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}
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if sub < -180 {
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sub += 360
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}
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return sub / (2 * delta)
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}
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jde = saturnConjunctionFull(jde, 180, 1)
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func saturnRetrogradeAroundOpposition(oppositionJD float64, searchBeforeOpposition bool) float64 {
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oppositionTT := TD2UT(oppositionJD, true)
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startTT := oppositionTT
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endTT := oppositionTT
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if searchBeforeOpposition {
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jde -= 60
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easternQuadratureUT := saturnConjunction(oppositionTT, 90, 0)
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startTT = TD2UT(easternQuadratureUT, true)
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} else {
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jde += 60
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westernQuadratureUT := saturnConjunction(oppositionTT, 270, 1)
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endTT = TD2UT(westernQuadratureUT, true)
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}
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for {
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currentRate := raRate(jde, 1.0/86400.0)
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if math.Abs(currentRate) > 0.55 {
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jde += 2
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continue
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}
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break
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}
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estimateJD := jde
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for {
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prevJD := estimateJD
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rateValue := raRate(prevJD, 2.0/86400.0)
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rateSlope := (raRate(prevJD+15.0/86400.0, 2.0/86400.0) - raRate(prevJD-15.0/86400.0, 2.0/86400.0)) / (30.0 / 86400.0)
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estimateJD = prevJD - rateValue/rateSlope
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if math.Abs(estimateJD-prevJD) <= 30.0/86400.0 {
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break
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}
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}
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bestJD := eventZeroRefine(estimateJD, 15.0/86400.0, 0.5/86400.0, func(jd float64) float64 {
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return raRate(jd, 0.5/86400.0)
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bestJD := zeroEventInWindow(startTT, endTT, 2.0, 2.0, 30.0/86400.0, func(jd float64) float64 {
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return saturnRADerivativeN(jd, 1.0/86400.0, saturnEventSearchN)
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}, func(jd float64) float64 {
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return saturnRADerivative(jd, 0.5/86400.0)
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})
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return TD2UT(bestJD, false)
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}
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func NextSaturnRetrogradeToPrograde(jde float64) float64 {
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date := saturnRetrograde(jde, false)
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if date < jde {
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oppositionJD := saturnConjunctionFull(jde, 180, 1)
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return saturnRetrograde(oppositionJD+10, false)
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lastOppositionJD := saturnConjunctionFull(jde, 180, 0)
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date := saturnRetrogradeAroundOpposition(lastOppositionJD, false)
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if sameEventUTQueryTT(date, jde) || eventUTQueryAfterOrEqual(date, jde) {
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return date
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}
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return date
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nextOppositionJD := saturnConjunctionFull(jde, 180, 1)
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return saturnRetrogradeAroundOpposition(nextOppositionJD, false)
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}
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func LastSaturnRetrogradeToPrograde(jde float64) float64 {
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jde = saturnConjunctionFull(jde, 180, 0) - 10
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date := saturnRetrograde(jde, false)
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if date > jde {
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oppositionJD := saturnConjunctionFull(jde, 180, 0)
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return saturnRetrograde(oppositionJD-10, false)
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lastOppositionJD := saturnConjunctionFull(jde, 180, 0)
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date := saturnRetrogradeAroundOpposition(lastOppositionJD, false)
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if sameEventUTQueryTT(date, jde) || eventUTQueryBeforeOrEqual(date, jde) {
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return date
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}
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return date
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previousOppositionJD := saturnConjunctionFull(eventUTLastQueryTT(lastOppositionJD), 180, 0)
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return saturnRetrogradeAroundOpposition(previousOppositionJD, false)
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}
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func NextSaturnProgradeToRetrograde(jde float64) float64 {
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date := saturnRetrograde(jde, true)
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if date < jde {
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oppositionJD := saturnConjunctionFull(jde, 180, 1)
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return saturnRetrograde(oppositionJD+10, true)
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nextOppositionJD := saturnConjunctionFull(jde, 180, 1)
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date := saturnRetrogradeAroundOpposition(nextOppositionJD, true)
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if sameEventUTQueryTT(date, jde) || eventUTQueryAfterOrEqual(date, jde) {
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return date
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}
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return date
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followingOppositionJD := saturnConjunctionFull(eventUTNextQueryTT(nextOppositionJD), 180, 1)
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return saturnRetrogradeAroundOpposition(followingOppositionJD, true)
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}
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func LastSaturnProgradeToRetrograde(jde float64) float64 {
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jde = saturnConjunctionFull(jde, 180, 0) - 10
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date := saturnRetrograde(jde, true)
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if date > jde {
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oppositionJD := saturnConjunctionFull(jde, 180, 0)
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return saturnRetrograde(oppositionJD-10, true)
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nextOppositionJD := saturnConjunctionFull(jde, 180, 1)
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date := saturnRetrogradeAroundOpposition(nextOppositionJD, true)
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if sameEventUTQueryTT(date, jde) || eventUTQueryBeforeOrEqual(date, jde) {
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return date
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}
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return date
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lastOppositionJD := saturnConjunctionFull(jde, 180, 0)
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return saturnRetrogradeAroundOpposition(lastOppositionJD, true)
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}
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