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astro/saturn/nodes.go
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package saturn
import (
"time"
"b612.me/astro/basic"
"b612.me/astro/calendar"
)
// AscendingNode 土星升交点黄经 / ascending node longitude of Saturn.
func (module *Saturn) AscendingNode(date time.Time) float64 {
return module.AscendingNodeN(date, -1)
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}
// AscendingNodeN 土星升交点黄经(n 变体) / n-parameterised ascending node longitude of Saturn.
func (module *Saturn) AscendingNodeN(date time.Time, n int) float64 {
jd := calendar.Date2JD(date.UTC())
return basic.SaturnAscendingNodeNWithInstance(basic.UTC2TT(jd), n, module.inst)
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}
// DescendingNode 土星降交点黄经 / descending node longitude of Saturn.
func (module *Saturn) DescendingNode(date time.Time) float64 {
return module.DescendingNodeN(date, -1)
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}
// DescendingNodeN 土星降交点黄经(n 变体) / n-parameterised descending node longitude of Saturn.
func (module *Saturn) DescendingNodeN(date time.Time, n int) float64 {
jd := calendar.Date2JD(date.UTC())
return basic.SaturnDescendingNodeNWithInstance(basic.UTC2TT(jd), n, module.inst)
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}