Files
astro/sun/context.go
T
b612 044f2f4381 feat: 引入可切换星历模型并扩展天象观测链路
- 新增半解析、旧模型、自定义与多源堆叠星历实例,提供 Context、Instance、SPK 读取及状态与视位置计算
- 统一太阳、月球和行星实例接口,扩展黄经穿越、留、相位、最近角距、偕日可见、任意高度升落、轨道节点及凌日等天象查询
- 完善日月食、月掩与凌日的月缘剖面、有限盘面接触、站心修正、局地可见性、全球路径和地图输出
- 新增 SVG、GeoJSON、KML 天象输出及凌日、月掩和月缘地形相关缓存与几何求解
- 新增恒星星表导入与查询,支持 CSV、Hipparcos、BSC5、Stellarium 等格式及名称、交叉标识、锥面检索和星等过滤
- 补充 IAU 2006、地球定向、折射消光、大气观测、轨道传播及半解析行星/月球数据支持
- 将默认未来民用时标切换为 TimeScaleLeapHour,更新 2027–2400 农历速查表、中文日期解析和时区边界处理
- 增加事件基线、跨模型回归、几何边界、月缘地形和输出契约测试,完善中英文手册、示例资源、NOTICE 与忽略规则
2026-10-15 23:54:15 +08:00

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package sun
import (
"time"
"b612.me/astro/internal/ephem"
)
// Sun 指定星历实例的计算模块 / computation module bound to an ephemeris instance.
type Sun struct{ inst *ephem.Instance }
// NewWithInstance 创建指定星历实例的模块,nil 使用全局模型 / create a module; nil uses the global model.
func NewWithInstance(inst *ephem.Instance) *Sun { return &Sun{inst: inst} }
var defaultModule Sun
// AxialtiltNutation 交角章动(IAU 2000B) / nutation in obliquity, IAU 2000B.
func (module *Sun) AxialtiltNutation(date time.Time) float64 { return AxialtiltNutation(date) }
// AxialtiltNutation1980 交角章动(IAU 1980) / nutation in obliquity, IAU 1980.
func (module *Sun) AxialtiltNutation1980(date time.Time) float64 { return AxialtiltNutation1980(date) }
// EclipticNutation 黄经章动(IAU 2000B) / nutation in longitude, IAU 2000B.
func (module *Sun) EclipticNutation(date time.Time) float64 { return EclipticNutation(date) }
// EclipticNutation1980 黄经章动(IAU 1980) / nutation in longitude, IAU 1980.
func (module *Sun) EclipticNutation1980(date time.Time) float64 { return EclipticNutation1980(date) }
// EclipticObliquity 黄赤交角 / ecliptic obliquity.
func (module *Sun) EclipticObliquity(date time.Time, nutation bool) float64 {
return EclipticObliquity(date, nutation)
}
// GeometricLo 太阳几何黄经 / geometric ecliptic longitude.
func (module *Sun) GeometricLo(date time.Time) float64 { return GeometricLo(date) }
// MidFunc 太阳中心差 / solar equation of center.
func (module *Sun) MidFunc(date time.Time) float64 { return MidFunc(date) }