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 MarsL(jd float64) float64 {
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return planet.WherePlanet(3, 0, jd)
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func MarsL(jde float64) float64 {
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return planet.WherePlanet(3, 0, jde)
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}
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func MarsB(jd float64) float64 {
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return planet.WherePlanet(3, 1, jd)
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func MarsB(jde float64) float64 {
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return planet.WherePlanet(3, 1, jde)
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}
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func MarsR(jd float64) float64 {
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return planet.WherePlanet(3, 2, jd)
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func MarsR(jde float64) float64 {
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return planet.WherePlanet(3, 2, jde)
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}
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func AMarsX(jd float64) float64 {
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l := MarsL(jd)
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b := MarsB(jd)
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r := MarsR(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 AMarsX(jde float64) float64 {
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l := MarsL(jde)
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b := MarsB(jde)
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r := MarsR(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 AMarsY(jd float64) float64 {
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func AMarsY(jde float64) float64 {
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l := MarsL(jd)
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b := MarsB(jd)
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r := MarsR(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 := MarsL(jde)
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b := MarsB(jde)
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r := MarsR(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 AMarsZ(jd float64) float64 {
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//l := MarsL(jd)
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b := MarsB(jd)
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r := MarsR(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 AMarsZ(jde float64) float64 {
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//l := MarsL(jde)
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b := MarsB(jde)
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r := MarsR(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 AMarsXYZ(jd float64) (float64, float64, float64) {
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l := MarsL(jd)
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b := MarsB(jd)
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r := MarsR(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 AMarsXYZ(jde float64) (float64, float64, float64) {
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l := MarsL(jde)
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b := MarsB(jde)
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r := MarsR(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 MarsApparentRa(jd float64) float64 {
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lo, bo := MarsApparentLoBo(jd)
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eps := TrueObliquity(jd)
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func MarsApparentRa(jde float64) float64 {
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lo, bo := MarsApparentLoBo(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 MarsApparentDec(jd float64) float64 {
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lo, bo := MarsApparentLoBo(jd)
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eps := TrueObliquity(jd)
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func MarsApparentDec(jde float64) float64 {
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lo, bo := MarsApparentLoBo(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 MarsApparentRaDec(jd float64) (float64, float64) {
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lo, bo := MarsApparentLoBo(jd)
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eps := TrueObliquity(jd)
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func MarsApparentRaDec(jde float64) (float64, float64) {
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lo, bo := MarsApparentLoBo(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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@@ -115,22 +115,22 @@ func MarsTrueLo(jd float64) float64 {
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return geo.lo
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}
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func MarsMag(jd float64) float64 {
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sunDistance := MarsR(jd)
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earthDistance := EarthMarsAway(jd)
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earthSunDistance := planet.WherePlanet(-1, 2, jd)
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func MarsMag(jde float64) float64 {
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sunDistance := MarsR(jde)
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earthDistance := EarthMarsAway(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 := -1.52 + 5*math.Log10(sunDistance*earthDistance) + 0.016*i
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return FloatRound(mag, 2)
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}
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func MarsHeight(jde, lon, lat, timezone float64) float64 {
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func MarsHeight(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 := MarsApparentRaDec(TD2UT(utcJde, true))
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st := Limit360(ApparentSiderealTime(utcJde)*15 + lon)
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ra, dec := MarsApparentRaDec(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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@@ -139,12 +139,12 @@ func MarsHeight(jde, lon, lat, timezone float64) float64 {
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return ArcSin(sinHeight)
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}
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func MarsAzimuth(jde, lon, lat, timezone float64) float64 {
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func MarsAzimuth(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 := MarsApparentRaDec(TD2UT(utcJde, true))
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st := Limit360(ApparentSiderealTime(utcJde)*15 + lon)
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ra, dec := MarsApparentRaDec(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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@@ -163,21 +163,21 @@ func MarsAzimuth(jde, lon, lat, timezone float64) float64 {
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}
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func MarsHourAngle(jd, lon, timezone float64) float64 {
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siderealLongitude := Limit360(ApparentSiderealTime(jd-timezone/24)*15 + lon)
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hourAngle := siderealLongitude - MarsApparentRa(TD2UT(jd-timezone/24.0, true))
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siderealLongitude := Limit360(ApparentSiderealTime(UTC2UT1(jd-timezone/24))*15 + lon)
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hourAngle := siderealLongitude - MarsApparentRa(UTC2TT(jd-timezone/24.0))
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if hourAngle < 0 {
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hourAngle += 360
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}
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return hourAngle
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}
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func MarsCulminationTime(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 MarsCulminationTime(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-MarsHourAngle(jde, lon, timezone))/15.0/24.0*0.99726851851851851851
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normalizedHourAngle := func(jde, lon, timezone float64) float64 {
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currentHourAngle := MarsHourAngle(jde, lon, timezone)
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localJD = math.Floor(localJD) + 0.5
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estimateJD := localJD + Limit360(360-MarsHourAngle(localJD, lon, timezone))/15.0/24.0*0.99726851851851851851
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normalizedHourAngle := func(localJD, lon, timezone float64) float64 {
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currentHourAngle := MarsHourAngle(localJD, lon, timezone)
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if currentHourAngle < 180 {
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currentHourAngle += 360
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}
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