b612
2bf8478639
- 新增日月食中心带、偏食带、阴影足迹、等时线、食分线及升落边界计算，支持极区与混合食拓扑 - 新增日食单时刻阴影求解器、站心状态查询、批量采样和 ΔT 覆盖接口 - 重构恒星与行星月掩路径，补充有限盘面接触、站心修正、掩带宽度、极区投影及升落边界 - 扩展 SVG 与 GeoJSON 输出，支持详细面板、全球/极区/地球投影、边界闭合、时间标记和拓扑签名 - 扩展日月食候选搜索、局地搜索、沙罗序列预计算与范围外推，补充系列锚点和成员一致性校验 - 补齐古历纪年、儒略历独有闰日、多公历候选、历法改革跨日及精确日期运算接口 - 优化 ΔT、章动、恒星时、月球地平线、事件根搜索和本地星历缓存，降低重复计算开销并提升边界稳定
95 lines
2.2 KiB
Go
95 lines
2.2 KiB
Go
package basic
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import (
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"b612.me/astro/planet"
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. "b612.me/astro/tools"
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)
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func MoonLo(jd float64) float64 { //'月球平黄经
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return planet.MoonLo(jd)
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}
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func SunMoonAngle(jd float64) float64 { // '月日距角
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return planet.SunMoonAngle(jd)
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}
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func MoonM(jd float64) float64 { // '月平近点角
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return planet.MoonM(jd)
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}
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func MoonLonX(jd float64) float64 { // As Double '月球经度参数(到升交点的平角距离)
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return planet.MoonLonX(jd)
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}
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func MoonI(jd float64) float64 {
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return planet.MoonI(jd)
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}
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func MoonR(jd float64) float64 {
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return planet.MoonR(jd)
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}
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func MoonB(jd float64) float64 {
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return planet.MoonB(jd)
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}
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func MoonTrueLo(jd float64) float64 {
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return planet.MoonTrueLo(jd)
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}
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func MoonTrueBo(jd float64) float64 {
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return planet.MoonTrueBo(jd)
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}
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func MoonAway(jd float64) float64 { //'月地距离
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return planet.MoonAway(jd)
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}
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/*
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* @name 月球视黄经
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*/
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func MoonApparentLo(jd float64) float64 {
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return MoonTrueLo(jd) + Nutation2000Bi(jd)
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}
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/*
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* 月球真赤纬
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*/
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func MoonTrueDec(jd float64) float64 {
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moonLo := MoonApparentLo(jd)
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moonBo := MoonTrueBo(jd)
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tmp := Sin(moonBo)*Cos(TrueObliquity(jd)) + Cos(moonBo)*Sin(TrueObliquity(jd))*Sin(moonLo)
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res := ArcSin(tmp)
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return res
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}
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/*
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* 月球真赤经
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*/
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func MoonTrueRa(jd float64) float64 {
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return LoToRa(jd, MoonApparentLo(jd), MoonTrueBo(jd))
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}
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func MoonTrueRaDec(jd float64) (float64, float64) {
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return LoBoToRaDec(jd, MoonApparentLo(jd), MoonTrueBo(jd))
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}
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// MoonApparentRa 站心视赤经；jd 为当地时儒略日，tz 为时区小时数 / topocentric apparent right ascension; jd is local civil time and tz is the zone offset in hours.
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func MoonApparentRa(jd, lon, lat float64, tz int) float64 {
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jde := TD2UT(jd, true)
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utcJD := jde - float64(tz)/24.000
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ra := MoonTrueRa(utcJD)
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dec := MoonTrueDec(utcJD)
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away := MoonAway(utcJD) / 149597870.7
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topoRA := TopocentricRa(ra, dec, lat, lon, jd-float64(tz)/24.000, away, 0)
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return topoRA
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}
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func MoonApparentDec(jd, lon, lat, tz float64) float64 {
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jde := TD2UT(jd, true)
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utcJD := jde - tz/24
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ra := MoonTrueRa(utcJD)
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dec := MoonTrueDec(utcJD)
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away := MoonAway(utcJD) / 149597870.7
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topoDec := TopocentricDec(ra, dec, lat, lon, jd-tz/24, away, 0)
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return topoDec
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}
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