b612
16c62a97d5
- 新增时标、ΔT 模型、质心时间与 UT1 支持 - 改进日月食、月掩、行星事件及路径边界计算 - 完善恒星三维自行与动态距离传播 - 扩展 SVG、GeoJSON、KML 输出与底层距离换算工具 - 整理中英文手册、示例资源及回归测试
53 lines
1.6 KiB
Go
53 lines
1.6 KiB
Go
package mars
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import (
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"time"
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"b612.me/astro/basic"
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"b612.me/astro/calendar"
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)
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// PhaseAngle 相位角，单位度 / phase angle in degrees.
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func PhaseAngle(date time.Time) float64 {
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return PhaseAngleN(date, -1)
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}
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// PhaseAngleN 相位角（截断版），单位度 / truncated phase angle in degrees.
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func PhaseAngleN(date time.Time, n int) float64 {
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return basic.MarsPhaseAngleN(phaseJD(date), n)
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}
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// IlluminatedFraction 被照亮比例 / illuminated fraction.
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func IlluminatedFraction(date time.Time) float64 {
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return IlluminatedFractionN(date, -1)
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}
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// IlluminatedFractionN 被照亮比例（截断版） / truncated illuminated fraction.
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func IlluminatedFractionN(date time.Time, n int) float64 {
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return basic.MarsIlluminatedFractionN(phaseJD(date), n)
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}
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// Phase 相位，被照亮比例 / phase, illuminated fraction.
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func Phase(date time.Time) float64 {
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return IlluminatedFraction(date)
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}
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// PhaseN 相位（截断版），被照亮比例 / truncated phase, illuminated fraction.
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func PhaseN(date time.Time, n int) float64 {
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return IlluminatedFractionN(date, n)
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}
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// BrightLimbPositionAngle 亮面中心位置角，单位度 / bright limb position angle in degrees.
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func BrightLimbPositionAngle(date time.Time) float64 {
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return BrightLimbPositionAngleN(date, -1)
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}
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// BrightLimbPositionAngleN 亮面中心位置角（截断版），单位度 / truncated bright limb position angle in degrees.
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func BrightLimbPositionAngleN(date time.Time, n int) float64 {
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return basic.MarsBrightLimbPositionAngleN(phaseJD(date), n)
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}
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func phaseJD(date time.Time) float64 {
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return basic.UTC2TT(calendar.Date2JD(date.UTC()))
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}
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