40 lines
1.3 KiB
Go
40 lines
1.3 KiB
Go
|
package venus
|
||
|
|
|
||
|
|
import (
|
||
|
|
"time"
|
||
|
|
|
||
|
|
"b612.me/astro/basic"
|
||
|
|
)
|
||
|
|
|
||
|
|
// PhysicalInfo 金星物理观测参数 / physical observing parameters of Venus.
|
||
|
|
type PhysicalInfo struct {
|
||
|
|
// SubEarthLongitude 子地经度，单位度；采用 Venus 当前 IAU/Horizons 东经为正约定。
|
||
|
|
SubEarthLongitude float64
|
||
|
|
// SubEarthLatitude 子地纬度，单位度。
|
||
|
|
SubEarthLatitude float64
|
||
|
|
// SubSolarLongitude 子日经度，单位度；采用 Venus 当前 IAU/Horizons 东经为正约定。
|
||
|
|
SubSolarLongitude float64
|
||
|
|
// SubSolarLatitude 子日纬度，单位度。
|
||
|
|
SubSolarLatitude float64
|
||
|
|
// NorthPolePositionAngle 金星北极位置角，单位度。
|
||
|
|
NorthPolePositionAngle float64
|
||
|
|
}
|
||
|
|
|
||
|
|
// Physical 金星物理观测参数 / physical observing parameters of Venus.
|
||
|
|
func Physical(date time.Time) PhysicalInfo {
|
||
|
|
return PhysicalN(date, -1)
|
||
|
|
}
|
||
|
|
|
||
|
|
// PhysicalN 金星物理观测参数（截断版） / truncated physical observing parameters of Venus.
|
||
|
|
func PhysicalN(date time.Time, n int) PhysicalInfo {
|
||
|
|
jde := basic.Date2JDE(date.UTC())
|
||
|
|
info := basic.VenusPhysicalN(basic.TD2UT(jde, true), n)
|
||
|
|
return PhysicalInfo{
|
||
|
|
SubEarthLongitude: info.SubEarthLongitude,
|
||
|
|
SubEarthLatitude: info.SubEarthLatitude,
|
||
|
|
SubSolarLongitude: info.SubSolarLongitude,
|
||
|
|
SubSolarLatitude: info.SubSolarLatitude,
|
||
|
|
NorthPolePositionAngle: info.NorthPolePositionAngle,
|
||
|
|
}
|
||
|
|
}
|