feat(moon): 新增行星合月查询并修正月球地心赤经赤纬接口

- 修正月球地心真/视赤经赤纬接口口径 - 新增月球与七大行星合月时刻查询
2026-05-23 19:00:53 +08:00
parent 34ff6a36ae
commit be3af3884c
13 changed files with 1302 additions and 3 deletions
@@ -0,0 +1,64 @@
+package basic
+
+import (
+	"encoding/json"
+	"os"
+	"testing"
+	"time"
+)
+
+type moonGeocentricApparentSample struct {
+	InputUTC          string  `json:"input_utc"`
+	RightAscension    float64 `json:"right_ascension"`
+	Declination       float64 `json:"declination"`
+	EclipticLongitude float64 `json:"ecliptic_longitude"`
+	EclipticLatitude  float64 `json:"ecliptic_latitude"`
+}
+
+func TestMoonGeocentricApparentCoordinatesMatchHorizonsBaseline(t *testing.T) {
+	data, err := os.ReadFile("testdata/moon_geocentric_apparent_baseline.json")
+	if err != nil {
+		t.Fatalf("read baseline: %v", err)
+	}
+
+	var samples []moonGeocentricApparentSample
+	if err := json.Unmarshal(data, &samples); err != nil {
+		t.Fatalf("decode baseline: %v", err)
+	}
+	if len(samples) == 0 {
+		t.Fatal("empty moon apparent baseline")
+	}
+
+	for _, sample := range samples {
+		date, err := time.Parse(time.RFC3339, sample.InputUTC)
+		if err != nil {
+			t.Fatalf("parse sample time %q: %v", sample.InputUTC, err)
+		}
+		jd := TD2UT(Date2JDE(date.UTC()), true)
+		prefix := "moon." + sample.InputUTC
+
+		assertPlanetApparentAngleClose(t, prefix+".RightAscension", HMoonGeocentricApparentRa(jd), sample.RightAscension, 0.001)
+		assertPlanetPhaseClose(t, prefix+".Declination", HMoonGeocentricApparentDec(jd), sample.Declination, 0.001)
+		assertPlanetApparentAngleClose(t, prefix+".EclipticLongitude", HMoonApparentLo(jd), sample.EclipticLongitude, 0.001)
+		assertPlanetPhaseClose(t, prefix+".EclipticLatitude", HMoonTrueBo(jd), sample.EclipticLatitude, 0.001)
+	}
+}
+
+func TestMoonGeocentricTrueCoordinatesFollowDefinition(t *testing.T) {
+	samples := []time.Time{
+		time.Date(1900, 1, 14, 12, 0, 0, 0, time.UTC),
+		time.Date(1950, 6, 3, 0, 0, 0, 0, time.UTC),
+		time.Date(2000, 2, 29, 18, 0, 0, 0, time.UTC),
+		time.Date(2026, 1, 1, 6, 0, 0, 0, time.UTC),
+		time.Date(2100, 8, 17, 9, 0, 0, 0, time.UTC),
+	}
+
+	for _, sample := range samples {
+		jd := TD2UT(Date2JDE(sample.UTC()), true)
+		wantRA, wantDec := LoBoToRaDec(jd, HMoonTrueLo(jd), HMoonTrueBo(jd))
+		gotRA, gotDec := HMoonGeocentricTrueRaDec(jd)
+
+		assertPlanetApparentAngleClose(t, sample.Format(time.RFC3339)+".TrueRightAscension", gotRA, wantRA, 1e-12)
+		assertPlanetPhaseClose(t, sample.Format(time.RFC3339)+".TrueDeclination", gotDec, wantDec, 1e-12)
+	}
+}