18 lines
582 B
Go
18 lines
582 B
Go
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package mercury
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import (
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"time"
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"b612.me/astro/basic"
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)
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// ParallacticAngle 水星视差角（天顶方向角） / Mercury parallactic angle.
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func ParallacticAngle(date time.Time, lon, lat float64) float64 {
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return basic.ParallacticAngleByHourAngle(HourAngle(date, lon), ApparentDec(date), lat)
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}
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// ParallacticAngleN 截断项水星视差角（天顶方向角） / truncated Mercury parallactic angle.
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func ParallacticAngleN(date time.Time, lon, lat float64, n int) float64 {
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return basic.ParallacticAngleByHourAngle(HourAngleN(date, lon, n), ApparentDecN(date, n), lat)
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}
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