feat: 引入可切换星历模型并扩展天象观测链路
- 新增半解析、旧模型、自定义与多源堆叠星历实例,提供 Context、Instance、SPK 读取及状态与视位置计算 - 统一太阳、月球和行星实例接口,扩展黄经穿越、留、相位、最近角距、偕日可见、任意高度升落、轨道节点及凌日等天象查询 - 完善日月食、月掩与凌日的月缘剖面、有限盘面接触、站心修正、局地可见性、全球路径和地图输出 - 新增 SVG、GeoJSON、KML 天象输出及凌日、月掩和月缘地形相关缓存与几何求解 - 新增恒星星表导入与查询,支持 CSV、Hipparcos、BSC5、Stellarium 等格式及名称、交叉标识、锥面检索和星等过滤 - 补充 IAU 2006、地球定向、折射消光、大气观测、轨道传播及半解析行星/月球数据支持 - 将默认未来民用时标切换为 TimeScaleLeapHour,更新 2027–2400 农历速查表、中文日期解析和时区边界处理 - 增加事件基线、跨模型回归、几何边界、月缘地形和输出契约测试,完善中英文手册、示例资源、NOTICE 与忽略规则
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+16
-12
@@ -3,7 +3,6 @@ package basic
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import (
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"math"
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"b612.me/astro/planet"
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. "b612.me/astro/tools"
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)
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@@ -122,18 +121,19 @@ func OrbitAstrometricGeocentricEquatorialJ2000(jde float64, elements OrbitElemen
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return orbitVectorToEquatorial(vector)
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}
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// OrbitApparentGeocentricEcliptic 返回光行时与章动修正后的地心视黄道坐标,单位度/AU。
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// OrbitApparentGeocentricEcliptic 返回光行时、周年光行差与章动修正后的地心视黄道坐标,单位度/AU。
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func OrbitApparentGeocentricEcliptic(jde float64, elements OrbitElements) (lon, lat, distance float64) {
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vectorDate := eclipticVectorAtReferenceEpoch(OrbitAstrometricGeocentricXYZJ2000(jde, elements), orbitReferenceJD, jde)
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lon, lat, distance = orbitVectorToEcliptic(vectorDate)
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if math.IsNaN(lon) {
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return math.NaN(), math.NaN(), math.NaN()
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}
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lon = Limit360(lon + Nutation2000Bi(jde))
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return lon, lat, distance
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aberrationLon, aberrationLat := GXCLo(lon, lat, jde), GXCBo(lon, lat, jde)
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lon = Limit360(lon + aberrationLon/3600 + Nutation2000Bi(jde))
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return lon, lat + aberrationLat/3600, distance
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}
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// OrbitApparentGeocentricEquatorial 返回光行时与章动修正后的地心视赤道坐标,单位度/AU。
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// OrbitApparentGeocentricEquatorial 返回光行时、周年光行差与章动修正后的地心视赤道坐标,单位度/AU。
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func OrbitApparentGeocentricEquatorial(jde float64, elements OrbitElements) (ra, dec, distance float64) {
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lon, lat, distance := OrbitApparentGeocentricEcliptic(jde, elements)
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if math.IsNaN(lon) {
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@@ -143,7 +143,7 @@ func OrbitApparentGeocentricEquatorial(jde float64, elements OrbitElements) (ra,
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return ra, dec, distance
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}
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// OrbitApparentTopocentricEquatorial 返回光行时、章动与站心修正后的视赤道坐标,单位度/AU。
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// OrbitApparentTopocentricEquatorial 返回光行时、周年光行差、章动与站心修正后的视赤道坐标,单位度/AU。
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func OrbitApparentTopocentricEquatorial(jde, observerLon, observerLat, observerHeight float64, elements OrbitElements) (ra, dec, distance float64) {
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geocentricRA, geocentricDec, geocentricDistance := OrbitApparentGeocentricEquatorial(jde, elements)
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if math.IsNaN(geocentricRA) {
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@@ -159,16 +159,20 @@ func OrbitApparentTopocentricEquatorial(jde, observerLon, observerLat, observerH
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return orbitVectorToEquatorial(topocentricVector)
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}
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func earthHeliocentricVectorOfDate(jde float64) Vector3 {
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func earthHeliocentricVectorOfDate(jde float64, instances ...*Instance) Vector3 {
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inst := instanceValue(instances)
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return eclipticCartesian(
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planet.WherePlanet(-1, 0, jde),
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planet.WherePlanet(-1, 1, jde),
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planet.WherePlanet(-1, 2, jde),
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PlanetCoordinateWithInstance(-1, 0, jde, inst),
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PlanetCoordinateWithInstance(-1, 1, jde, inst),
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PlanetCoordinateWithInstance(-1, 2, jde, inst),
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)
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}
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func earthHeliocentricVectorJ2000(jde float64) Vector3 {
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return eclipticVectorAtReferenceEpoch(earthHeliocentricVectorOfDate(jde), jde, orbitReferenceJD)
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func earthHeliocentricVectorJ2000(jde float64, instances ...*Instance) Vector3 {
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inst := instanceValue(instances)
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return eclipticVectorAtReferenceEpoch(earthHeliocentricVectorOfDate(jde, inst), jde, orbitReferenceJD)
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}
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func orbitVectorToEcliptic(vector Vector3) (lon, lat, distance float64) {
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