feat: 扩展天文计算能力
- 新增日食、月食、本地可见性、中心线、半影区域、SVG 图示与沙罗周期信息 - 新增行星冲合、留、方照、物理星历、视直径、相位、亮肢角、轨道节点等计算 - 新增木星伽利略卫星位置、现象与接触事件计算 - 新增恒星星表、星座判定、自行修正与观测辅助能力 - 新增 coord、formula、orbit、sundial、lite/sun、lite/moon 等扩展包 - 完善农历年号、月相英文别名、视差角、大气质量、折射、日晷与双星计算 - 增加 NASA、JPL Horizons、IMCCE 等回归测试数据与基线测试 - 重构基础算法文件组织，补充大量公开 API 注释和语义回归测试 - 更新中文和英文 README，补充示例、精度说明、SVG 配图
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package basic
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import (
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"time"
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)
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type outerPlanetEventFunc func(float64) float64
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type outerPlanetEventCase struct {
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name string
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tolerance float64
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fn outerPlanetEventFunc
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}
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type outerPlanetEventPlan struct {
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planet string
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baselineFile string
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samples func() []time.Time
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phaseCases []outerPlanetEventCase
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retroCases []outerPlanetEventCase
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}
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func (plan outerPlanetEventPlan) allCases() []outerPlanetEventCase {
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cases := make([]outerPlanetEventCase, 0, len(plan.phaseCases)+len(plan.retroCases))
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cases = append(cases, plan.phaseCases...)
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cases = append(cases, plan.retroCases...)
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return cases
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}
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func outerPlanetEventSampleTTJD(date time.Time) float64 {
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return TD2UT(Date2JDE(date.UTC()), true)
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}
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func jupiterEventSamples() []time.Time {
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start := time.Date(1991, 3, 11, 5, 17, 23, 456000000, time.UTC)
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samples := make([]time.Time, 0, 96)
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for i := 0; i < 48; i++ {
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d := start.AddDate(0, 0, i*227)
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d = d.Add(time.Duration((i%8)*4)*time.Hour + time.Duration((i%11)*9)*time.Minute + time.Duration((i%13)*17)*time.Second)
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samples = append(samples, d)
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}
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extraStart := start.AddDate(0, 0, 37)
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for i := 0; i < 48; i++ {
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d := extraStart.AddDate(0, 0, i*149)
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d = d.Add(time.Duration((i%6)*7)*time.Hour + time.Duration((i%10)*13)*time.Minute + time.Duration((i%15)*23)*time.Second)
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samples = append(samples, d)
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}
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return samples
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}
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func saturnEventSamples() []time.Time {
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start := time.Date(1990, 7, 21, 8, 12, 34, 567000000, time.UTC)
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samples := make([]time.Time, 0, 96)
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for i := 0; i < 48; i++ {
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d := start.AddDate(0, 0, i*233)
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d = d.Add(time.Duration((i%9)*5)*time.Hour + time.Duration((i%10)*7)*time.Minute + time.Duration((i%12)*19)*time.Second)
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samples = append(samples, d)
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}
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extraStart := start.AddDate(0, 0, 43)
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for i := 0; i < 48; i++ {
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d := extraStart.AddDate(0, 0, i*157)
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d = d.Add(time.Duration((i%7)*6)*time.Hour + time.Duration((i%9)*11)*time.Minute + time.Duration((i%14)*29)*time.Second)
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samples = append(samples, d)
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}
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return samples
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}
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func uranusEventSamples() []time.Time {
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start := time.Date(1993, 11, 5, 10, 22, 33, 444000000, time.UTC)
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samples := make([]time.Time, 0, 96)
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for i := 0; i < 48; i++ {
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d := start.AddDate(0, 0, i*239)
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d = d.Add(time.Duration((i%7)*6)*time.Hour + time.Duration((i%9)*13)*time.Minute + time.Duration((i%14)*11)*time.Second)
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samples = append(samples, d)
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}
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extraStart := start.AddDate(0, 0, 59)
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for i := 0; i < 48; i++ {
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d := extraStart.AddDate(0, 0, i*163)
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d = d.Add(time.Duration((i%8)*5)*time.Hour + time.Duration((i%12)*17)*time.Minute + time.Duration((i%13)*31)*time.Second)
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samples = append(samples, d)
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}
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return samples
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}
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func neptuneEventSamples() []time.Time {
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start := time.Date(1996, 4, 17, 3, 14, 15, 926000000, time.UTC)
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samples := make([]time.Time, 0, 96)
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for i := 0; i < 48; i++ {
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d := start.AddDate(0, 0, i*241)
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d = d.Add(time.Duration((i%10)*3)*time.Hour + time.Duration((i%8)*17)*time.Minute + time.Duration((i%15)*7)*time.Second)
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samples = append(samples, d)
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}
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extraStart := start.AddDate(0, 0, 67)
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for i := 0; i < 48; i++ {
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d := extraStart.AddDate(0, 0, i*167)
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d = d.Add(time.Duration((i%9)*4)*time.Hour + time.Duration((i%11)*19)*time.Minute + time.Duration((i%14)*27)*time.Second)
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samples = append(samples, d)
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}
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return samples
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}
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func outerPlanetEventPlans() []outerPlanetEventPlan {
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const (
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conjunctionTolerance = 0.00001
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searchTolerance = 30.0 / 86400.0
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)
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return []outerPlanetEventPlan{
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{
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planet: "Jupiter",
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baselineFile: "testdata/jupiter_event_baseline.json",
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samples: jupiterEventSamples,
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phaseCases: []outerPlanetEventCase{
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{name: "LastJupiterConjunction", tolerance: conjunctionTolerance, fn: LastJupiterConjunction},
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{name: "NextJupiterConjunction", tolerance: conjunctionTolerance, fn: NextJupiterConjunction},
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{name: "LastJupiterOpposition", tolerance: conjunctionTolerance, fn: LastJupiterOpposition},
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{name: "NextJupiterOpposition", tolerance: conjunctionTolerance, fn: NextJupiterOpposition},
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{name: "LastJupiterEasternQuadrature", tolerance: conjunctionTolerance, fn: LastJupiterEasternQuadrature},
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{name: "NextJupiterEasternQuadrature", tolerance: conjunctionTolerance, fn: NextJupiterEasternQuadrature},
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{name: "LastJupiterWesternQuadrature", tolerance: conjunctionTolerance, fn: LastJupiterWesternQuadrature},
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{name: "NextJupiterWesternQuadrature", tolerance: conjunctionTolerance, fn: NextJupiterWesternQuadrature},
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},
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retroCases: []outerPlanetEventCase{
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{name: "LastJupiterProgradeToRetrograde", tolerance: searchTolerance, fn: LastJupiterProgradeToRetrograde},
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{name: "NextJupiterProgradeToRetrograde", tolerance: searchTolerance, fn: NextJupiterProgradeToRetrograde},
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{name: "LastJupiterRetrogradeToPrograde", tolerance: searchTolerance, fn: LastJupiterRetrogradeToPrograde},
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{name: "NextJupiterRetrogradeToPrograde", tolerance: searchTolerance, fn: NextJupiterRetrogradeToPrograde},
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},
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},
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{
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planet: "Saturn",
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baselineFile: "testdata/saturn_event_baseline.json",
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samples: saturnEventSamples,
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phaseCases: []outerPlanetEventCase{
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{name: "LastSaturnConjunction", tolerance: conjunctionTolerance, fn: LastSaturnConjunction},
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{name: "NextSaturnConjunction", tolerance: conjunctionTolerance, fn: NextSaturnConjunction},
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{name: "LastSaturnOpposition", tolerance: conjunctionTolerance, fn: LastSaturnOpposition},
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{name: "NextSaturnOpposition", tolerance: conjunctionTolerance, fn: NextSaturnOpposition},
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{name: "LastSaturnEasternQuadrature", tolerance: conjunctionTolerance, fn: LastSaturnEasternQuadrature},
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{name: "NextSaturnEasternQuadrature", tolerance: conjunctionTolerance, fn: NextSaturnEasternQuadrature},
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{name: "LastSaturnWesternQuadrature", tolerance: conjunctionTolerance, fn: LastSaturnWesternQuadrature},
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{name: "NextSaturnWesternQuadrature", tolerance: conjunctionTolerance, fn: NextSaturnWesternQuadrature},
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},
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retroCases: []outerPlanetEventCase{
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{name: "LastSaturnProgradeToRetrograde", tolerance: searchTolerance, fn: LastSaturnProgradeToRetrograde},
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{name: "NextSaturnProgradeToRetrograde", tolerance: searchTolerance, fn: NextSaturnProgradeToRetrograde},
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{name: "LastSaturnRetrogradeToPrograde", tolerance: searchTolerance, fn: LastSaturnRetrogradeToPrograde},
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{name: "NextSaturnRetrogradeToPrograde", tolerance: searchTolerance, fn: NextSaturnRetrogradeToPrograde},
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},
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},
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{
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planet: "Uranus",
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baselineFile: "testdata/uranus_event_baseline.json",
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samples: uranusEventSamples,
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phaseCases: []outerPlanetEventCase{
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{name: "LastUranusConjunction", tolerance: conjunctionTolerance, fn: LastUranusConjunction},
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{name: "NextUranusConjunction", tolerance: conjunctionTolerance, fn: NextUranusConjunction},
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{name: "LastUranusOpposition", tolerance: conjunctionTolerance, fn: LastUranusOpposition},
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{name: "NextUranusOpposition", tolerance: conjunctionTolerance, fn: NextUranusOpposition},
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{name: "LastUranusEasternQuadrature", tolerance: conjunctionTolerance, fn: LastUranusEasternQuadrature},
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{name: "NextUranusEasternQuadrature", tolerance: conjunctionTolerance, fn: NextUranusEasternQuadrature},
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{name: "LastUranusWesternQuadrature", tolerance: conjunctionTolerance, fn: LastUranusWesternQuadrature},
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{name: "NextUranusWesternQuadrature", tolerance: conjunctionTolerance, fn: NextUranusWesternQuadrature},
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},
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retroCases: []outerPlanetEventCase{
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{name: "LastUranusProgradeToRetrograde", tolerance: searchTolerance, fn: LastUranusProgradeToRetrograde},
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{name: "NextUranusProgradeToRetrograde", tolerance: searchTolerance, fn: NextUranusProgradeToRetrograde},
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{name: "LastUranusRetrogradeToPrograde", tolerance: searchTolerance, fn: LastUranusRetrogradeToPrograde},
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{name: "NextUranusRetrogradeToPrograde", tolerance: searchTolerance, fn: NextUranusRetrogradeToPrograde},
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},
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},
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{
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planet: "Neptune",
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baselineFile: "testdata/neptune_event_baseline.json",
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samples: neptuneEventSamples,
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phaseCases: []outerPlanetEventCase{
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{name: "LastNeptuneConjunction", tolerance: conjunctionTolerance, fn: LastNeptuneConjunction},
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{name: "NextNeptuneConjunction", tolerance: conjunctionTolerance, fn: NextNeptuneConjunction},
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{name: "LastNeptuneOpposition", tolerance: conjunctionTolerance, fn: LastNeptuneOpposition},
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{name: "NextNeptuneOpposition", tolerance: conjunctionTolerance, fn: NextNeptuneOpposition},
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{name: "LastNeptuneEasternQuadrature", tolerance: conjunctionTolerance, fn: LastNeptuneEasternQuadrature},
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{name: "NextNeptuneEasternQuadrature", tolerance: conjunctionTolerance, fn: NextNeptuneEasternQuadrature},
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{name: "LastNeptuneWesternQuadrature", tolerance: conjunctionTolerance, fn: LastNeptuneWesternQuadrature},
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{name: "NextNeptuneWesternQuadrature", tolerance: conjunctionTolerance, fn: NextNeptuneWesternQuadrature},
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},
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retroCases: []outerPlanetEventCase{
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{name: "LastNeptuneProgradeToRetrograde", tolerance: searchTolerance, fn: LastNeptuneProgradeToRetrograde},
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{name: "NextNeptuneProgradeToRetrograde", tolerance: searchTolerance, fn: NextNeptuneProgradeToRetrograde},
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{name: "LastNeptuneRetrogradeToPrograde", tolerance: searchTolerance, fn: LastNeptuneRetrogradeToPrograde},
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{name: "NextNeptuneRetrogradeToPrograde", tolerance: searchTolerance, fn: NextNeptuneRetrogradeToPrograde},
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},
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},
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}
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}
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