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
63 lines
2.5 KiB
Go
63 lines
2.5 KiB
Go
package jupiter
|
|
|
|
import (
|
|
"time"
|
|
|
|
"b612.me/astro/basic"
|
|
)
|
|
|
|
// GalileanSatellitePhenomenon 木星伽利略卫星瞬时现象 / instantaneous Galilean-satellite phenomena.
|
|
//
|
|
// Transit 为凌日，Occultation 为掩蔽，Eclipse 为进入木星本影，ShadowTransit 为卫星影子落在可见木星盘面上。
|
|
// ShadowOffset* 仅在 ShadowTransit 为 true 时有意义。
|
|
// Transit means a transit across Jupiter's disk, Occultation means hidden behind Jupiter, Eclipse means inside Jupiter's umbra, and ShadowTransit means the shadow falls on the visible Jovian disk.
|
|
// ShadowOffset* are meaningful only when ShadowTransit is true.
|
|
type GalileanSatellitePhenomenon struct {
|
|
Transit bool
|
|
Occultation bool
|
|
Eclipse bool
|
|
ShadowTransit bool
|
|
|
|
ShadowOffsetXArcsec float64
|
|
ShadowOffsetYArcsec float64
|
|
|
|
ShadowOffsetXJupiterR float64
|
|
ShadowOffsetYJupiterR float64
|
|
}
|
|
|
|
// GalileanPhenomenaInfo 四颗伽利略卫星瞬时现象 / instantaneous phenomena of the four Galilean satellites.
|
|
type GalileanPhenomenaInfo struct {
|
|
Io GalileanSatellitePhenomenon
|
|
Europa GalileanSatellitePhenomenon
|
|
Ganymede GalileanSatellitePhenomenon
|
|
Callisto GalileanSatellitePhenomenon
|
|
}
|
|
|
|
// SatellitePhenomena 木星四颗伽利略卫星瞬时现象 / instantaneous phenomena of Jupiter's four Galilean satellites.
|
|
//
|
|
// date 表示观测绝对时刻（UTC），内部换算为该时刻对应的 TT/TDB 历元求值。
|
|
// date is the observing instant in UTC; it is converted to the corresponding TT/TDB epoch for evaluation.
|
|
func SatellitePhenomena(date time.Time) GalileanPhenomenaInfo {
|
|
jde := basic.TD2UT(basic.Date2JDE(date.UTC()), true)
|
|
phenomena := basic.JupiterGalileanSatellitePhenomena(jde)
|
|
return GalileanPhenomenaInfo{
|
|
Io: galileanPhenomenonFromBasic(phenomena[0]),
|
|
Europa: galileanPhenomenonFromBasic(phenomena[1]),
|
|
Ganymede: galileanPhenomenonFromBasic(phenomena[2]),
|
|
Callisto: galileanPhenomenonFromBasic(phenomena[3]),
|
|
}
|
|
}
|
|
|
|
func galileanPhenomenonFromBasic(phenomenon basic.JupiterGalileanPhenomenon) GalileanSatellitePhenomenon {
|
|
return GalileanSatellitePhenomenon{
|
|
Transit: phenomenon.Transit,
|
|
Occultation: phenomenon.Occultation,
|
|
Eclipse: phenomenon.Eclipse,
|
|
ShadowTransit: phenomenon.ShadowTransit,
|
|
ShadowOffsetXArcsec: phenomenon.ShadowOffsetXArcsec,
|
|
ShadowOffsetYArcsec: phenomenon.ShadowOffsetYArcsec,
|
|
ShadowOffsetXJupiterR: phenomenon.ShadowOffsetXJupiterRadii,
|
|
ShadowOffsetYJupiterR: phenomenon.ShadowOffsetYJupiterRadii,
|
|
}
|
|
}
|