34 lines
991 B
Go
34 lines
991 B
Go
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package sun
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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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// PhysicalInfo 太阳物理观测参数 / physical observing parameters of the Sun.
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type PhysicalInfo struct {
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// P 太阳北极位置角，单位度 / position angle of the solar north pole in degrees.
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P float64
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// B0 日面中心太阳纬度，单位度 / heliographic latitude of the disk center in degrees.
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B0 float64
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// L0 日面中心卡林顿经度，单位度 / Carrington heliographic longitude of the disk center in degrees.
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L0 float64
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}
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// Physical 太阳物理观测参数 / physical observing parameters of the Sun.
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func Physical(date time.Time) PhysicalInfo {
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return PhysicalN(date, -1)
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}
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// PhysicalN 太阳物理观测参数（截断版） / truncated physical observing parameters of the Sun.
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func PhysicalN(date time.Time, n int) PhysicalInfo {
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jde := basic.Date2JDE(date.UTC())
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info := basic.SunPhysicalN(basic.TD2UT(jde, true), n)
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return PhysicalInfo{
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P: info.P,
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B0: info.B0,
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L0: info.L0,
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}
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}
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