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feat: 完善时标与天象几何计算并扩展输出接口

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- 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
This commit is contained in:
兔子
2026-09-23 18:55:12 +08:00
parent 1f31a9b5b5
commit 16c62a97d5
503 changed files with 33290 additions and 9471 deletions
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basic/orbit_observation.go
+23 -23
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@@ -6,24 +6,24 @@ import (
. "b612.me/astro/tools"
)
func orbitTopocentricObservation(jde, observerLon, observerLat, observerHeight, timezone float64, elements OrbitElements) (ra, dec, distance float64) {
utcJde := jde - timezone/24.0
return OrbitApparentTopocentricEquatorial(TD2UT(utcJde, true), observerLon, observerLat, observerHeight, elements)
func orbitTopocentricObservation(localJD, observerLon, observerLat, observerHeight, timezone float64, elements OrbitElements) (ra, dec, distance float64) {
utcJD := localJD - timezone/24.0
return OrbitApparentTopocentricEquatorial(UTC2TT(utcJD), observerLon, observerLat, observerHeight, elements)
}
// OrbitHeight 返回轨道目标在观测者所在地的视高度角，单位度。
func OrbitHeight(jde, observerLon, observerLat, timezone, observerHeight float64, elements OrbitElements) float64 {
ra, dec, _ := orbitTopocentricObservation(jde, observerLon, observerLat, observerHeight, timezone, elements)
st := Limit360(ApparentSiderealTime(jde-timezone/24.0)*15 + observerLon)
func OrbitHeight(localJD, observerLon, observerLat, timezone, observerHeight float64, elements OrbitElements) float64 {
ra, dec, _ := orbitTopocentricObservation(localJD, observerLon, observerLat, observerHeight, timezone, elements)
st := Limit360(ApparentSiderealTime(UTC2UT1(localJD-timezone/24.0))*15 + observerLon)
hourAngle := Limit360(st - ra)
sinHeight := Sin(observerLat)*Sin(dec) + Cos(dec)*Cos(observerLat)*Cos(hourAngle)
return ArcSin(sinHeight)
}
// OrbitAzimuth 返回轨道目标在观测者所在地的视方位角，按正北为 0°、向东增加。
func OrbitAzimuth(jde, observerLon, observerLat, timezone, observerHeight float64, elements OrbitElements) float64 {
ra, dec, _ := orbitTopocentricObservation(jde, observerLon, observerLat, observerHeight, timezone, elements)
st := Limit360(ApparentSiderealTime(jde-timezone/24.0)*15 + observerLon)
func OrbitAzimuth(localJD, observerLon, observerLat, timezone, observerHeight float64, elements OrbitElements) float64 {
ra, dec, _ := orbitTopocentricObservation(localJD, observerLon, observerLat, observerHeight, timezone, elements)
st := Limit360(ApparentSiderealTime(UTC2UT1(localJD-timezone/24.0))*15 + observerLon)
hourAngle := Limit360(st - ra)
tanAzimuth := Sin(hourAngle) / (Cos(hourAngle)*Sin(observerLat) - Tan(dec)*Cos(observerLat))
azimuth := ArcTan(tanAzimuth)
@@ -40,9 +40,9 @@ func OrbitAzimuth(jde, observerLon, observerLat, timezone, observerHeight float6
}
// OrbitHourAngle 返回轨道目标的站心视时角，单位度。
func OrbitHourAngle(jde, observerLon, observerLat, timezone, observerHeight float64, elements OrbitElements) float64 {
ra, _, _ := orbitTopocentricObservation(jde, observerLon, observerLat, observerHeight, timezone, elements)
st := Limit360(ApparentSiderealTime(jde-timezone/24.0)*15 + observerLon)
func OrbitHourAngle(localJD, observerLon, observerLat, timezone, observerHeight float64, elements OrbitElements) float64 {
ra, _, _ := orbitTopocentricObservation(localJD, observerLon, observerLat, observerHeight, timezone, elements)
st := Limit360(ApparentSiderealTime(UTC2UT1(localJD-timezone/24.0))*15 + observerLon)
hourAngle := st - ra
if hourAngle < 0 {
hourAngle += 360
@@ -52,11 +52,11 @@ func OrbitHourAngle(jde, observerLon, observerLat, timezone, observerHeight floa
// OrbitHourAngleWithTopocentric 返回站心视时角及同一状态的站心视赤经、视赤纬 / hour angle with its topocentric state.
//
// jde 沿用 OrbitHourAngle 的当地时口径：函数内部先减 timezone/24 得世界时，再按 UT→TT 换算。
// jde follows the local-time convention of OrbitHourAngle: timezone/24 is subtracted before the UT→TT conversion.
func OrbitHourAngleWithTopocentric(jde, observerLon, observerLat, timezone, observerHeight float64, elements OrbitElements) (ra, dec, hourAngle float64) {
ra, dec, _ = orbitTopocentricObservation(jde, observerLon, observerLat, observerHeight, timezone, elements)
st := Limit360(ApparentSiderealTime(jde-timezone/24.0)*15 + observerLon)
// localJD 沿用 OrbitHourAngle 的当地时口径：函数内部先减 timezone/24 得世界时，再按 UT→TT 换算。
// localJD follows the local-time convention of OrbitHourAngle: timezone/24 is subtracted before the UT→TT conversion.
func OrbitHourAngleWithTopocentric(localJD, observerLon, observerLat, timezone, observerHeight float64, elements OrbitElements) (ra, dec, hourAngle float64) {
ra, dec, _ = orbitTopocentricObservation(localJD, observerLon, observerLat, observerHeight, timezone, elements)
st := Limit360(ApparentSiderealTime(UTC2UT1(localJD-timezone/24.0))*15 + observerLon)
hourAngle = st - ra
if hourAngle < 0 {
hourAngle += 360
@@ -65,14 +65,14 @@ func OrbitHourAngleWithTopocentric(jde, observerLon, observerLat, timezone, obse
}
// OrbitCulminationTime 返回轨道目标的中天时刻，输入输出均沿用本仓库现有观测函数的 JD 语义。
func OrbitCulminationTime(jde, observerLon, observerLat, timezone, observerHeight float64, elements OrbitElements) float64 {
if !isFiniteFloat(jde) || !isFiniteFloat(observerLon) || !isFiniteFloat(observerLat) || !isFiniteFloat(timezone) || !isFiniteFloat(observerHeight) {
func OrbitCulminationTime(localJD, observerLon, observerLat, timezone, observerHeight float64, elements OrbitElements) float64 {
if !isFiniteFloat(localJD) || !isFiniteFloat(observerLon) || !isFiniteFloat(observerLat) || !isFiniteFloat(timezone) || !isFiniteFloat(observerHeight) {
return math.NaN()
}
jde = math.Floor(jde) + 0.5
estimateJD := jde + Limit360(360-OrbitHourAngle(jde, observerLon, observerLat, timezone, observerHeight, elements))/15.0/24.0*0.99726851851851851851
normalizedHourAngle := func(jde float64) float64 {
currentHourAngle := OrbitHourAngle(jde, observerLon, observerLat, timezone, observerHeight, elements)
localJD = math.Floor(localJD) + 0.5
estimateJD := localJD + Limit360(360-OrbitHourAngle(localJD, observerLon, observerLat, timezone, observerHeight, elements))/15.0/24.0*0.99726851851851851851
normalizedHourAngle := func(localJD float64) float64 {
currentHourAngle := OrbitHourAngle(localJD, observerLon, observerLat, timezone, observerHeight, elements)
if currentHourAngle < 180 {
currentHourAngle += 360
}