b612
16c62a97d5
- 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
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.UTC2TT(basic.Date2JD(date.UTC()))
|
|
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,
|
|
}
|
|
}
|