feat: 完善时标与天象几何计算并扩展输出接口
- 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
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+63
-63
@@ -7,79 +7,79 @@ import (
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. "b612.me/astro/tools"
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)
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func VenusL(jd float64) float64 {
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return planet.WherePlanet(2, 0, jd)
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func VenusL(jde float64) float64 {
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return planet.WherePlanet(2, 0, jde)
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}
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func VenusB(jd float64) float64 {
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return planet.WherePlanet(2, 1, jd)
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func VenusB(jde float64) float64 {
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return planet.WherePlanet(2, 1, jde)
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}
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func VenusR(jd float64) float64 {
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return planet.WherePlanet(2, 2, jd)
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func VenusR(jde float64) float64 {
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return planet.WherePlanet(2, 2, jde)
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}
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func AVenusX(jd float64) float64 {
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l := VenusL(jd)
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b := VenusB(jd)
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r := VenusR(jd)
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el := planet.WherePlanet(-1, 0, jd)
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eb := planet.WherePlanet(-1, 1, jd)
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er := planet.WherePlanet(-1, 2, jd)
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func AVenusX(jde float64) float64 {
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l := VenusL(jde)
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b := VenusB(jde)
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r := VenusR(jde)
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el := planet.WherePlanet(-1, 0, jde)
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eb := planet.WherePlanet(-1, 1, jde)
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er := planet.WherePlanet(-1, 2, jde)
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x := r*Cos(b)*Cos(l) - er*Cos(eb)*Cos(el)
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return x
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}
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func AVenusY(jd float64) float64 {
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func AVenusY(jde float64) float64 {
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l := VenusL(jd)
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b := VenusB(jd)
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r := VenusR(jd)
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el := planet.WherePlanet(-1, 0, jd)
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eb := planet.WherePlanet(-1, 1, jd)
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er := planet.WherePlanet(-1, 2, jd)
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l := VenusL(jde)
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b := VenusB(jde)
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r := VenusR(jde)
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el := planet.WherePlanet(-1, 0, jde)
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eb := planet.WherePlanet(-1, 1, jde)
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er := planet.WherePlanet(-1, 2, jde)
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y := r*Cos(b)*Sin(l) - er*Cos(eb)*Sin(el)
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return y
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}
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func AVenusZ(jd float64) float64 {
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//l := VenusL(jd)
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b := VenusB(jd)
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r := VenusR(jd)
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// el := planet.WherePlanet(-1, 0, jd)
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eb := planet.WherePlanet(-1, 1, jd)
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er := planet.WherePlanet(-1, 2, jd)
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func AVenusZ(jde float64) float64 {
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//l := VenusL(jde)
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b := VenusB(jde)
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r := VenusR(jde)
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// el := planet.WherePlanet(-1, 0, jde)
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eb := planet.WherePlanet(-1, 1, jde)
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er := planet.WherePlanet(-1, 2, jde)
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z := r*Sin(b) - er*Sin(eb)
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return z
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}
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func AVenusXYZ(jd float64) (float64, float64, float64) {
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l := VenusL(jd)
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b := VenusB(jd)
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r := VenusR(jd)
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el := planet.WherePlanet(-1, 0, jd)
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eb := planet.WherePlanet(-1, 1, jd)
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er := planet.WherePlanet(-1, 2, jd)
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func AVenusXYZ(jde float64) (float64, float64, float64) {
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l := VenusL(jde)
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b := VenusB(jde)
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r := VenusR(jde)
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el := planet.WherePlanet(-1, 0, jde)
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eb := planet.WherePlanet(-1, 1, jde)
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er := planet.WherePlanet(-1, 2, jde)
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x := r*Cos(b)*Cos(l) - er*Cos(eb)*Cos(el)
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y := r*Cos(b)*Sin(l) - er*Cos(eb)*Sin(el)
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z := r*Sin(b) - er*Sin(eb)
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return x, y, z
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}
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func VenusApparentRa(jd float64) float64 {
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lo, bo := VenusApparentLoBo(jd)
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eps := TrueObliquity(jd)
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func VenusApparentRa(jde float64) float64 {
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lo, bo := VenusApparentLoBo(jde)
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eps := TrueObliquity(jde)
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ra := math.Atan2((Sin(lo)*Cos(eps) - Tan(bo)*Sin(eps)), Cos(lo))
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ra = ra * 180 / math.Pi
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return Limit360(ra)
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}
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func VenusApparentDec(jd float64) float64 {
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lo, bo := VenusApparentLoBo(jd)
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eps := TrueObliquity(jd)
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func VenusApparentDec(jde float64) float64 {
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lo, bo := VenusApparentLoBo(jde)
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eps := TrueObliquity(jde)
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dec := ArcSin(Sin(bo)*Cos(eps) + Cos(bo)*Sin(eps)*Sin(lo))
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return dec
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}
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func VenusApparentRaDec(jd float64) (float64, float64) {
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lo, bo := VenusApparentLoBo(jd)
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eps := TrueObliquity(jd)
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func VenusApparentRaDec(jde float64) (float64, float64) {
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lo, bo := VenusApparentLoBo(jde)
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eps := TrueObliquity(jde)
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ra := math.Atan2((Sin(lo)*Cos(eps) - Tan(bo)*Sin(eps)), Cos(lo))
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ra = ra * 180 / math.Pi
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dec := ArcSin(Sin(bo)*Cos(eps) + Cos(bo)*Sin(eps)*Sin(lo))
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@@ -105,22 +105,22 @@ func VenusApparentLoBo(jd float64) (float64, float64) {
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return geo.lo, geo.bo
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}
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func VenusMag(jd float64) float64 {
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sunDistance := VenusR(jd)
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earthDistance := EarthVenusAway(jd)
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earthSunDistance := planet.WherePlanet(-1, 2, jd)
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func VenusMag(jde float64) float64 {
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sunDistance := VenusR(jde)
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earthDistance := EarthVenusAway(jde)
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earthSunDistance := planet.WherePlanet(-1, 2, jde)
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i := (sunDistance*sunDistance + earthDistance*earthDistance - earthSunDistance*earthSunDistance) / (2 * sunDistance * earthDistance)
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i = ArcCos(i)
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mag := -4.40 + 5*math.Log10(sunDistance*earthDistance) + 0.0009*i + 0.000239*i*i - 0.00000065*i*i*i
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return FloatRound(mag, 2)
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}
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func VenusHeight(jde, lon, lat, timezone float64) float64 {
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func VenusHeight(localJD, lon, lat, timezone float64) float64 {
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// 转换为世界时
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utcJde := jde - timezone/24.0
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utcJD := localJD - timezone/24.0
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// 计算视恒星时
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ra, dec := VenusApparentRaDec(TD2UT(utcJde, true))
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st := Limit360(ApparentSiderealTime(utcJde)*15 + lon)
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ra, dec := VenusApparentRaDec(UTC2TT(utcJD))
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st := Limit360(ApparentSiderealTime(UTC2UT1(utcJD))*15 + lon)
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// 计算时角
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hourAngle := Limit360(st - ra)
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// 高度角、时角与天球座标三角转换公式
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@@ -129,12 +129,12 @@ func VenusHeight(jde, lon, lat, timezone float64) float64 {
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return ArcSin(sinHeight)
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}
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func VenusAzimuth(jde, lon, lat, timezone float64) float64 {
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func VenusAzimuth(localJD, lon, lat, timezone float64) float64 {
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// 转换为世界时
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utcJde := jde - timezone/24.0
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utcJD := localJD - timezone/24.0
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// 计算视恒星时
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ra, dec := VenusApparentRaDec(TD2UT(utcJde, true))
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st := Limit360(ApparentSiderealTime(utcJde)*15 + lon)
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ra, dec := VenusApparentRaDec(UTC2TT(utcJD))
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st := Limit360(ApparentSiderealTime(UTC2UT1(utcJD))*15 + lon)
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// 计算时角
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hourAngle := Limit360(st - ra)
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// 三角转换公式
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@@ -153,21 +153,21 @@ func VenusAzimuth(jde, lon, lat, timezone float64) float64 {
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}
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func VenusHourAngle(jd, lon, tz float64) float64 {
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startime := Limit360(ApparentSiderealTime(jd-tz/24)*15 + lon)
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timeangle := startime - VenusApparentRa(TD2UT(jd-tz/24.0, true))
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startime := Limit360(ApparentSiderealTime(UTC2UT1(jd-tz/24))*15 + lon)
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timeangle := startime - VenusApparentRa(UTC2TT(jd-tz/24.0))
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if timeangle < 0 {
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timeangle += 360
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}
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return timeangle
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}
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func VenusCulminationTime(jde, lon, timezone float64) float64 {
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//jde 世界时，非力学时，当地时区 0时，无需转换力学时
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func VenusCulminationTime(localJD, lon, timezone float64) float64 {
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// localJD 是本地民用日锚点（当地 0 时），不是力学时。
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//ra,dec 瞬时天球座标，非J2000等时间天球坐标
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jde = math.Floor(jde) + 0.5
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estimateJD := jde + Limit360(360-VenusHourAngle(jde, lon, timezone))/15.0/24.0*0.99726851851851851851
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limitHA := func(jde, lon, timezone float64) float64 {
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ha := VenusHourAngle(jde, lon, timezone)
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localJD = math.Floor(localJD) + 0.5
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estimateJD := localJD + Limit360(360-VenusHourAngle(localJD, lon, timezone))/15.0/24.0*0.99726851851851851851
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limitHA := func(localJD, lon, timezone float64) float64 {
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ha := VenusHourAngle(localJD, lon, timezone)
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if ha < 180 {
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ha += 360
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}
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