feat: 扩展天文计算能力
- 新增日食、月食、本地可见性、中心线、半影区域、SVG 图示与沙罗周期信息 - 新增行星冲合、留、方照、物理星历、视直径、相位、亮肢角、轨道节点等计算 - 新增木星伽利略卫星位置、现象与接触事件计算 - 新增恒星星表、星座判定、自行修正与观测辅助能力 - 新增 coord、formula、orbit、sundial、lite/sun、lite/moon 等扩展包 - 完善农历年号、月相英文别名、视差角、大气质量、折射、日晷与双星计算 - 增加 NASA、JPL Horizons、IMCCE 等回归测试数据与基线测试 - 重构基础算法文件组织，补充大量公开 API 注释和语义回归测试 - 更新中文和英文 README，补充示例、精度说明、SVG 配图
This commit is contained in:
+169
-96
@@ -15,63 +15,115 @@ var (
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ERR_VENUS_NEVER_DOWN = ERR_VENUS_NEVER_SET
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)
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// ApparentLo 视黄经
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func riseSetResult(date time.Time, jde float64, err error) (time.Time, error) {
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if err != nil {
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switch {
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case errors.Is(err, basic.ErrNeverRise):
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return time.Time{}, ERR_VENUS_NEVER_RISE
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case errors.Is(err, basic.ErrNeverSet):
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return time.Time{}, ERR_VENUS_NEVER_SET
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default:
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return time.Time{}, err
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}
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}
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return basic.JDE2DateByZone(jde, date.Location(), true), nil
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}
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// ApparentLo 视黄经 / apparent ecliptic longitude.
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//
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// 返回金星在 date 对应绝对时刻的瞬时视黄经，单位度。
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// Returns the apparent ecliptic longitude of Venus at the instant represented by date, in degrees.
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func ApparentLo(date time.Time) float64 {
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jde := calendar.Date2JDE(date)
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jde := calendar.Date2JDE(date.UTC())
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return basic.VenusApparentLo(basic.TD2UT(jde, true))
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}
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// ApparentBo 视黄纬
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// ApparentBo 视黄纬 / apparent ecliptic latitude.
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//
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// 返回金星在 date 对应绝对时刻的瞬时视黄纬，单位度。
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// Returns the apparent ecliptic latitude of Venus at the instant represented by date, in degrees.
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func ApparentBo(date time.Time) float64 {
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jde := calendar.Date2JDE(date)
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jde := calendar.Date2JDE(date.UTC())
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return basic.VenusApparentBo(basic.TD2UT(jde, true))
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}
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// ApparentRa 视赤经
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// ApparentRa 视赤经 / apparent right ascension.
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//
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// 返回金星在 date 对应绝对时刻的瞬时视赤经，单位度。
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// Returns the apparent right ascension of Venus at the instant represented by date, in degrees.
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func ApparentRa(date time.Time) float64 {
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jde := calendar.Date2JDE(date)
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jde := calendar.Date2JDE(date.UTC())
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return basic.VenusApparentRa(basic.TD2UT(jde, true))
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}
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// ApparentDec 视赤纬
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// ApparentDec 视赤纬 / apparent declination.
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//
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// 返回金星在 date 对应绝对时刻的瞬时视赤纬，单位度。
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// Returns the apparent declination of Venus at the instant represented by date, in degrees.
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func ApparentDec(date time.Time) float64 {
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jde := calendar.Date2JDE(date)
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jde := calendar.Date2JDE(date.UTC())
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return basic.VenusApparentDec(basic.TD2UT(jde, true))
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}
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// ApparentRaDec 视赤经赤纬
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// ApparentRaDec 视赤经、视赤纬 / apparent right ascension and declination.
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//
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// 返回金星在 date 对应绝对时刻的瞬时视赤经与视赤纬，单位度。
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// Returns the apparent right ascension and declination of Venus at the instant represented by date, in degrees.
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func ApparentRaDec(date time.Time) (float64, float64) {
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jde := calendar.Date2JDE(date)
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jde := calendar.Date2JDE(date.UTC())
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return basic.VenusApparentRaDec(basic.TD2UT(jde, true))
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}
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// ApparentMagnitude 视星等
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// ApparentMagnitude 视星等 / apparent magnitude.
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//
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// 返回金星在 date 对应绝对时刻的视星等。
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// Returns the apparent visual magnitude of Venus at the instant represented by date.
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func ApparentMagnitude(date time.Time) float64 {
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jde := calendar.Date2JDE(date)
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jde := calendar.Date2JDE(date.UTC())
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return basic.VenusMag(basic.TD2UT(jde, true))
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}
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// EarthDistance 与地球距离（天文单位）
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// EarthDistance 地心距离 / Earth distance.
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//
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// 返回金星在 date 对应绝对时刻到地球的距离，单位 AU。
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// Returns the distance from Venus to Earth at the instant represented by date, in astronomical units.
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func EarthDistance(date time.Time) float64 {
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jde := calendar.Date2JDE(date)
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jde := calendar.Date2JDE(date.UTC())
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return basic.EarthVenusAway(basic.TD2UT(jde, true))
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}
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// EarthDistance 与太阳距离（天文单位）
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// SunDistance 日心距离 / Sun distance.
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//
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// 返回金星在 date 对应绝对时刻到太阳的距离，单位 AU。
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// Returns the distance from Venus to the Sun at the instant represented by date, in astronomical units.
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func SunDistance(date time.Time) float64 {
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jde := calendar.Date2JDE(date)
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jde := calendar.Date2JDE(date.UTC())
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return planet.WherePlanet(2, 2, basic.TD2UT(jde, true))
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}
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// Zenith 高度角
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func Zenith(date time.Time, lon, lat float64) float64 {
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// Altitude 高度角 / altitude.
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//
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// date 表示观测时刻，会读取其时区参与地方时计算；lon 为观测者经度，东正西负；lat 为观测者纬度，北正南负。返回值单位度。
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// date is the observing instant and its zone offset participates in local-time calculations. lon is east-positive longitude, lat is north-positive latitude, and the result is in degrees.
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func Altitude(date time.Time, lon, lat float64) float64 {
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jde := basic.Date2JDE(date)
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_, loc := date.Zone()
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timezone := float64(loc) / 3600.0
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return basic.VenusHeight(jde, lon, lat, timezone)
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}
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// Azimuth 方位角
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// Zenith 天顶距 / zenith distance.
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//
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// 参数与 Altitude 相同，返回值为对应时刻的天顶距，单位度。
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// Uses the same inputs as Altitude and returns the zenith distance in degrees.
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func Zenith(date time.Time, lon, lat float64) float64 {
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return 90 - Altitude(date, lon, lat)
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}
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// Azimuth 方位角 / azimuth.
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//
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// date 表示观测时刻，会读取其时区参与地方时计算；lon 为观测者经度，东正西负；lat 为观测者纬度，北正南负。返回值按正北为 0°、向东增加。
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// date is the observing instant and its zone offset participates in local-time calculations. lon is east-positive longitude, lat is north-positive latitude, and azimuth is measured from north toward east.
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func Azimuth(date time.Time, lon, lat float64) float64 {
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jde := basic.Date2JDE(date)
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_, loc := date.Zone()
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@@ -79,8 +131,10 @@ func Azimuth(date time.Time, lon, lat float64) float64 {
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return basic.VenusAzimuth(jde, lon, lat, timezone)
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}
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// HourAngle 时角
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// 返回给定经纬度、对应date时区date时刻的时角（
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// HourAngle 时角 / hour angle.
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//
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// date 表示观测时刻，会读取其时区参与地方时计算；lon 为观测者经度，东正西负。返回值单位度。
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// date is the observing instant and its zone offset participates in local-time calculations. lon is east-positive longitude and the returned hour angle is in degrees.
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func HourAngle(date time.Time, lon float64) float64 {
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jde := basic.Date2JDE(date)
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_, loc := date.Zone()
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@@ -88,8 +142,10 @@ func HourAngle(date time.Time, lon float64) float64 {
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return basic.VenusHourAngle(jde, lon, timezone)
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}
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// CulminationTime 中天时间
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// 返回给定经纬度、对应date时区date时刻的中天日期
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// CulminationTime 中天时刻 / culmination time.
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//
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// date 取其所在时区的当地日期，返回值保持相同时区；lon 为观测者经度，东正西负。
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// date is interpreted on its local civil day and the result keeps the same time zone. lon is east-positive longitude.
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func CulminationTime(date time.Time, lon float64) time.Time {
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if date.Hour() > 12 {
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date = date.Add(time.Hour * -12)
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@@ -101,14 +157,11 @@ func CulminationTime(date time.Time, lon float64) time.Time {
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return basic.JDE2DateByZone(calcJde, date.Location(), false)
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}
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// RiseTime 升起时间
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// date，取日期，时区忽略
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// lon，经度，东正西负
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// lat，纬度，北正南负
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// height，高度
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// aero，true时进行大气修正
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// RiseTime 升起时间 / rise time.
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//
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// date 取其所在时区的当地日期，返回值保持相同时区；lon 为东正西负经度，lat 为北正南负纬度；height 为观测点海拔高度（米）；aero 为 true 时加入标准大气折射。
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// date is interpreted on its local civil day and the result keeps the same time zone. lon is east-positive longitude, lat is north-positive latitude, height is observer elevation in meters, and aero enables standard atmospheric refraction.
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func RiseTime(date time.Time, lon, lat, height float64, aero bool) (time.Time, error) {
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var err error
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var aeroFloat float64
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if aero {
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aeroFloat = 1
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@@ -119,35 +172,25 @@ func RiseTime(date time.Time, lon, lat, height float64, aero bool) (time.Time, e
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jde := basic.Date2JDE(date)
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_, loc := date.Zone()
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timezone := float64(loc) / 3600.0
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riseJde := basic.VenusRiseTime(jde, lon, lat, timezone, aeroFloat, height)
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if riseJde == -2 {
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err = ERR_VENUS_NEVER_RISE
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}
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if riseJde == -1 {
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err = ERR_VENUS_NEVER_SET
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}
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return basic.JDE2DateByZone(riseJde, date.Location(), true), err
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riseJde, err := basic.VenusRiseTime(jde, lon, lat, timezone, aeroFloat, height)
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return riseSetResult(date, riseJde, err)
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}
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// deprecated: -- use SetTime instead
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// DownTime 落下时间
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// date，取日期，时区忽略
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// lon，经度，东正西负
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// lat，纬度，北正南负
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// height，高度
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// aero，true时进行大气修正
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// DownTime 落下时间别名 / deprecated set-time alias.
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//
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// Deprecated: use SetTime instead.
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//
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// 参数与 SetTime 相同，仅为兼容旧接口保留。
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// Same as SetTime and kept only for backward compatibility.
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func DownTime(date time.Time, lon, lat, height float64, aero bool) (time.Time, error) {
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return SetTime(date, lon, lat, height, aero)
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}
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// SetTime 落下时间
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// date，取日期，时区忽略
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// lon，经度，东正西负
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// lat，纬度，北正南负
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// height，高度
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// aero，true时进行大气修正
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// SetTime 落下时间 / set time.
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//
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// 参数与 RiseTime 相同，返回给定当地日期内的落下时刻。
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// Uses the same inputs as RiseTime and returns the set time on the corresponding local civil day.
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func SetTime(date time.Time, lon, lat, height float64, aero bool) (time.Time, error) {
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var err error
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var aeroFloat float64
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if aero {
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aeroFloat = 1
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@@ -158,137 +201,167 @@ func SetTime(date time.Time, lon, lat, height float64, aero bool) (time.Time, er
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jde := basic.Date2JDE(date)
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_, loc := date.Zone()
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timezone := float64(loc) / 3600.0
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riseJde := basic.VenusDownTime(jde, lon, lat, timezone, aeroFloat, height)
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if riseJde == -2 {
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err = ERR_VENUS_NEVER_RISE
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}
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if riseJde == -1 {
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err = ERR_VENUS_NEVER_SET
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}
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return basic.JDE2DateByZone(riseJde, date.Location(), true), err
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riseJde, err := basic.VenusSetTime(jde, lon, lat, timezone, aeroFloat, height)
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return riseSetResult(date, riseJde, err)
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}
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// LastConjunction 上次合日时间
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// 返回上次合日时间，不区分上合下合
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// LastConjunction 上一次合日 / previous conjunction with the Sun.
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//
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// 返回 date 之前最近一次与太阳的合日时刻，结果保持 date 的时区。
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// Returns the most recent conjunction with the Sun relative to date, keeping date's time zone.
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func LastConjunction(date time.Time) time.Time {
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jde := basic.TD2UT(basic.Date2JDE(date.UTC()), true)
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return basic.JDE2DateByZone(basic.LastVenusConjunction(jde), date.Location(), false)
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}
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// NextConjunction 下次合日时间
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// 返回下次合日时间，不区分上合下合
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// NextConjunction 下一次合日 / next conjunction with the Sun.
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//
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// 返回 date 之后最近一次与太阳的合日时刻，结果保持 date 的时区。
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// Returns the next conjunction with the Sun relative to date, keeping date's time zone.
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func NextConjunction(date time.Time) time.Time {
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jde := basic.TD2UT(basic.Date2JDE(date.UTC()), true)
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return basic.JDE2DateByZone(basic.NextVenusConjunction(jde), date.Location(), false)
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}
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// LastInferiorConjunction 上次下合时间
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// 返回上次下合日时间
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// LastInferiorConjunction 上一次下合 / previous inferior conjunction.
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//
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// 返回 date 之前最近一次下合时刻，结果保持 date 的时区。
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// Returns the most recent inferior conjunction relative to date, keeping date's time zone.
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func LastInferiorConjunction(date time.Time) time.Time {
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jde := basic.TD2UT(basic.Date2JDE(date.UTC()), true)
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return basic.JDE2DateByZone(basic.LastVenusInferiorConjunction(jde), date.Location(), false)
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}
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// NextInferiorConjunction 下次下合时间
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// 返回下次合日时间
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// NextInferiorConjunction 下一次下合 / next inferior conjunction.
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//
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// 返回 date 之后最近一次下合时刻，结果保持 date 的时区。
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// Returns the next inferior conjunction relative to date, keeping date's time zone.
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func NextInferiorConjunction(date time.Time) time.Time {
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jde := basic.TD2UT(basic.Date2JDE(date.UTC()), true)
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return basic.JDE2DateByZone(basic.NextVenusInferiorConjunction(jde), date.Location(), false)
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}
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// LastSuperiorConjunction 上次上合时间
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// 返回上次下合时间
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// LastSuperiorConjunction 上一次上合 / previous superior conjunction.
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//
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// 返回 date 之前最近一次上合时刻，结果保持 date 的时区。
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// Returns the most recent superior conjunction relative to date, keeping date's time zone.
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func LastSuperiorConjunction(date time.Time) time.Time {
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jde := basic.TD2UT(basic.Date2JDE(date.UTC()), true)
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return basic.JDE2DateByZone(basic.LastVenusSuperiorConjunction(jde), date.Location(), false)
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}
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// NextSuperiorConjunction 下次上合时间
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// 返回下次上合时间
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// NextSuperiorConjunction 下一次上合 / next superior conjunction.
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//
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// 返回 date 之后最近一次上合时刻，结果保持 date 的时区。
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// Returns the next superior conjunction relative to date, keeping date's time zone.
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func NextSuperiorConjunction(date time.Time) time.Time {
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jde := basic.TD2UT(basic.Date2JDE(date.UTC()), true)
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return basic.JDE2DateByZone(basic.NextVenusSuperiorConjunction(jde), date.Location(), false)
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}
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// LastRetrograde 上次留的时间
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// 返回上次留时间，不区分顺逆
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// LastRetrograde 上一次留 / previous stationary point.
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//
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// 返回 date 之前最近一次留时刻，不区分顺转逆还是逆转顺，结果保持 date 的时区。
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// Returns the most recent stationary point relative to date without distinguishing direction, keeping date's time zone.
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func LastRetrograde(date time.Time) time.Time {
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jde := basic.TD2UT(basic.Date2JDE(date.UTC()), true)
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return basic.JDE2DateByZone(basic.LastVenusRetrograde(jde), date.Location(), false)
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}
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// NextRetrograde 下次留时间
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// 返回下次留的时间，不区分顺逆
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// NextRetrograde 下一次留 / next stationary point.
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//
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// 返回 date 之后最近一次留时刻，不区分顺转逆还是逆转顺，结果保持 date 的时区。
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// Returns the next stationary point relative to date without distinguishing direction, keeping date's time zone.
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func NextRetrograde(date time.Time) time.Time {
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jde := basic.TD2UT(basic.Date2JDE(date.UTC()), true)
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return basic.JDE2DateByZone(basic.NextVenusRetrograde(jde), date.Location(), false)
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}
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// LastProgradeToRetrograde 上次留（顺转逆）
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// 返回上次顺转逆留的时间
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// LastProgradeToRetrograde 上一次顺行转逆行留 / previous station from prograde to retrograde.
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//
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// 返回 date 之前最近一次由顺行转为逆行的留时刻，结果保持 date 的时区。
|
||||
// Returns the most recent stationary point where motion changes from prograde to retrograde relative to date, keeping date's time zone.
|
||||
func LastProgradeToRetrograde(date time.Time) time.Time {
|
||||
jde := basic.TD2UT(basic.Date2JDE(date.UTC()), true)
|
||||
return basic.JDE2DateByZone(basic.LastVenusProgradeToRetrograde(jde), date.Location(), false)
|
||||
}
|
||||
|
||||
// NextProgradeToRetrograde 下次留（顺转逆）
|
||||
// 返回下次顺转逆留的时间
|
||||
// NextProgradeToRetrograde 下一次顺行转逆行留 / next station from prograde to retrograde.
|
||||
//
|
||||
// 返回 date 之后最近一次由顺行转为逆行的留时刻，结果保持 date 的时区。
|
||||
// Returns the next stationary point where motion changes from prograde to retrograde relative to date, keeping date's time zone.
|
||||
func NextProgradeToRetrograde(date time.Time) time.Time {
|
||||
jde := basic.TD2UT(basic.Date2JDE(date.UTC()), true)
|
||||
return basic.JDE2DateByZone(basic.NextVenusProgradeToRetrograde(jde), date.Location(), false)
|
||||
}
|
||||
|
||||
// LastRetrogradeToPrograde 上次留（逆转瞬）
|
||||
// 返回上次逆转瞬留的时间
|
||||
// LastRetrogradeToPrograde 上一次逆行转顺行留 / previous station from retrograde to prograde.
|
||||
//
|
||||
// 返回 date 之前最近一次由逆行转为顺行的留时刻，结果保持 date 的时区。
|
||||
// Returns the most recent stationary point where motion changes from retrograde to prograde relative to date, keeping date's time zone.
|
||||
func LastRetrogradeToPrograde(date time.Time) time.Time {
|
||||
jde := basic.TD2UT(basic.Date2JDE(date.UTC()), true)
|
||||
return basic.JDE2DateByZone(basic.LastVenusRetrogradeToPrograde(jde), date.Location(), false)
|
||||
}
|
||||
|
||||
// NextRetrogradeToPrograde 上次留（逆转瞬）
|
||||
// // 返回上次逆转瞬留的时间
|
||||
// NextRetrogradeToPrograde 下一次逆行转顺行留 / next station from retrograde to prograde.
|
||||
//
|
||||
// 返回 date 之后最近一次由逆行转为顺行的留时刻，结果保持 date 的时区。
|
||||
// Returns the next stationary point where motion changes from retrograde to prograde relative to date, keeping date's time zone.
|
||||
func NextRetrogradeToPrograde(date time.Time) time.Time {
|
||||
jde := basic.TD2UT(basic.Date2JDE(date.UTC()), true)
|
||||
return basic.JDE2DateByZone(basic.NextVenusRetrogradeToPrograde(jde), date.Location(), false)
|
||||
}
|
||||
|
||||
// LastGreatestElongation 上次大距时间
|
||||
// 返回上次大距时间，不区分东西大距
|
||||
// LastGreatestElongation 上一次大距 / previous greatest elongation.
|
||||
//
|
||||
// 返回 date 之前最近一次大距时刻，不区分东西大距，结果保持 date 的时区。
|
||||
// Returns the most recent greatest elongation relative to date without distinguishing east or west, keeping date's time zone.
|
||||
func LastGreatestElongation(date time.Time) time.Time {
|
||||
jde := basic.TD2UT(basic.Date2JDE(date.UTC()), true)
|
||||
return basic.JDE2DateByZone(basic.LastVenusGreatestElongation(jde), date.Location(), false)
|
||||
}
|
||||
|
||||
// NextGreatestElongation 下次大距时间
|
||||
// 返回下次大距时间，不区分东西大距
|
||||
// NextGreatestElongation 下一次大距 / next greatest elongation.
|
||||
//
|
||||
// 返回 date 之后最近一次大距时刻，不区分东西大距，结果保持 date 的时区。
|
||||
// Returns the next greatest elongation relative to date without distinguishing east or west, keeping date's time zone.
|
||||
func NextGreatestElongation(date time.Time) time.Time {
|
||||
jde := basic.TD2UT(basic.Date2JDE(date.UTC()), true)
|
||||
return basic.JDE2DateByZone(basic.NextVenusGreatestElongation(jde), date.Location(), false)
|
||||
}
|
||||
|
||||
// LastGreatestElongationEast 上次东大距时间
|
||||
// 返回上次东大距时间
|
||||
// LastGreatestElongationEast 上一次东大距 / previous greatest eastern elongation.
|
||||
//
|
||||
// 返回 date 之前最近一次东大距时刻，结果保持 date 的时区。
|
||||
// Returns the most recent greatest eastern elongation relative to date, keeping date's time zone.
|
||||
func LastGreatestElongationEast(date time.Time) time.Time {
|
||||
jde := basic.TD2UT(basic.Date2JDE(date.UTC()), true)
|
||||
return basic.JDE2DateByZone(basic.LastVenusGreatestElongationEast(jde), date.Location(), false)
|
||||
}
|
||||
|
||||
// NextGreatestElongationEast 下次东大距时间
|
||||
// 返回下次东大距时间
|
||||
// NextGreatestElongationEast 下一次东大距 / next greatest eastern elongation.
|
||||
//
|
||||
// 返回 date 之后最近一次东大距时刻，结果保持 date 的时区。
|
||||
// Returns the next greatest eastern elongation relative to date, keeping date's time zone.
|
||||
func NextGreatestElongationEast(date time.Time) time.Time {
|
||||
jde := basic.TD2UT(basic.Date2JDE(date.UTC()), true)
|
||||
return basic.JDE2DateByZone(basic.NextVenusGreatestElongationEast(jde), date.Location(), false)
|
||||
}
|
||||
|
||||
// LastGreatestElongationWest 上次西大距时间
|
||||
// 返回上次西大距时间
|
||||
// LastGreatestElongationWest 上一次西大距 / previous greatest western elongation.
|
||||
//
|
||||
// 返回 date 之前最近一次西大距时刻，结果保持 date 的时区。
|
||||
// Returns the most recent greatest western elongation relative to date, keeping date's time zone.
|
||||
func LastGreatestElongationWest(date time.Time) time.Time {
|
||||
jde := basic.TD2UT(basic.Date2JDE(date.UTC()), true)
|
||||
return basic.JDE2DateByZone(basic.LastVenusGreatestElongationWest(jde), date.Location(), false)
|
||||
}
|
||||
|
||||
// NextGreatestElongationWest 下次西大距时间
|
||||
// 返回下次西大距时间
|
||||
// NextGreatestElongationWest 下一次西大距 / next greatest western elongation.
|
||||
//
|
||||
// 返回 date 之后最近一次西大距时刻，结果保持 date 的时区。
|
||||
// Returns the next greatest western elongation relative to date, keeping date's time zone.
|
||||
func NextGreatestElongationWest(date time.Time) time.Time {
|
||||
jde := basic.TD2UT(basic.Date2JDE(date.UTC()), true)
|
||||
return basic.JDE2DateByZone(basic.NextVenusGreatestElongationWest(jde), date.Location(), false)
|
||||
|
||||
Reference in New Issue
Block a user