func main() {
latitude, longitude := 53.21853, 6.5670 // Groningen, The Netherlands
// END OF USER SETTINGS
now := novas.Now()
fmt.Println(now)
geo := novas.NewPlace(latitude, longitude, 0, 20, 1010)
fmt.Println("\nLocation:", geo, "\n")
moon := novas.Moon()
fmt.Printf("Distance from earth's center: %.0f km\n", moon.App(now).Dis*novas.AU)
data := moon.Topo(now, geo, novas.REFR_NONE)
fmt.Printf("Distance from surface location: %.0f km\n\n", data.Dis*novas.AU)
fmt.Printf("Altitude: %7.3f°\nAzimuth: %7.3f°\n\n", data.Alt, data.Az)
fmt.Printf("Phase of the moon: %.2f°, illuminated: %.0f%%\n\n", novas.MoonPhase(now), moon.Disc(now))
fmt.Println("Next new moon: ", novas.MoonPhaseNext(now, 0, 30*time.Second))
fmt.Println("Next first quarter: ", novas.MoonPhaseNext(now, 90, 30*time.Second))
fmt.Println("Next full moon: ", novas.MoonPhaseNext(now, 180, 30*time.Second))
fmt.Println("Next third quarter: ", novas.MoonPhaseNext(now, 270, 30*time.Second))
}
func main() {
latitude, longitude := 53.21853, 6.5670 // Groningen, The Netherlands
// END OF USER SETTINGS
fmt.Println(novas.EphInfo(), "\n")
now := novas.Now()
fmt.Println(now)
geo := novas.NewPlace(latitude, longitude, 0, 20, 1010)
fmt.Println("\nLocation:", geo)
fmt.Println("\n Distance Altitude Azimuth Disc")
for _, obj := range []*novas.Body{
novas.Mercury(),
novas.Venus(),
novas.Mars(),
novas.Jupiter(),
novas.Saturn(),
novas.Uranus(),
novas.Neptune(),
novas.Pluto(),
} {
data := obj.Topo(now, geo, novas.REFR_NONE)
fmt.Printf("%-8s%12.6f%11.2f%10.2f%7.0f\n", obj.Name(), data.Dis, data.Alt, data.Az, obj.Disc(now))
}
}
func TestTopoStar(t *testing.T) {
nt := novas.Date(2008, 4, 24, 10, 36, 18, 0, time.UTC)
star := novas.NewStar("GMB 1830", "FK6", 1307, 11.88299133, 37.71867646, 4003.27, -5815.07, 109.21, -98.8)
place := novas.NewPlace(42.0, -70, 0, 18, 1010)
data := star.Topo(nt, place, novas.REFR_NONE)
tests := [][3]string{
{"Distance", "NaN", fmt.Sprintf("%.6f", data.Dis)},
{"Altitude", "4.808569", fmt.Sprintf("%.6f", data.Alt)},
{"Azimuth", "318.528197", fmt.Sprintf("%.6f", data.Az)},
}
for _, test := range tests {
if test[1] != test[2] {
t.Errorf("%s: expected %s, got %s", test[0], test[1], test[2])
}
}
}
func TestTopoPlanet(t *testing.T) {
nt := novas.Date(2012, 12, 13, 12, 0, 0, 0, time.UTC)
sun := novas.Sun()
place := novas.NewPlace(53.21853, 6.5670, 0, 18, 1010)
data := sun.Topo(nt, place, novas.REFR_NONE)
tests := [][3]string{
{"Distance in AU", "0.984414", fmt.Sprintf("%.6f", data.Dis)},
{"Altitude", "13.278250", fmt.Sprintf("%.6f", data.Alt)},
{"Azimuth", "187.524224", fmt.Sprintf("%.6f", data.Az)},
}
for _, test := range tests {
if test[1] != test[2] {
t.Errorf("%s: expected %s, got %s", test[0], test[1], test[2])
}
}
}
func main() {
t := novas.Date(2008, 4, 24, 10, 36, 18, 0, time.UTC)
star := novas.NewStar("GMB 1830", "FK6", 1307, 11.88299133, 37.71867646, 4003.27, -5815.07, 109.21, -98.8)
data := star.App(t)
fmt.Println("Results for star", star.Name(), "at", t.Local())
fmt.Printf("Right ascension: %10.6f\n", data.RA)
fmt.Printf("Declination: %10.6f\n", data.Dec)
fmt.Printf("Ecliptic longitude: %10.6f\n", data.ELon)
fmt.Printf("Ecliptic latitude: %10.6f\n", data.ELat)
place := novas.NewPlace(42.0, -70, 0, 18, 1010)
data2 := star.Topo(t, place, novas.REFR_NONE)
fmt.Printf("Altitude: %10.6f\n", data2.Alt)
fmt.Printf("Azimuth: %10.6f\n", data2.Az)
}
func main() {
latitude, longitude := 53.21853, 6.5670 // Groningen, The Netherlands
// END OF USER SETTINGS
now := novas.Now()
fmt.Println(now)
geo := novas.NewPlace(latitude, longitude, 0, 20, 1010)
fmt.Println("\nLocation:", geo, "\n")
sun := novas.Sun()
fmt.Printf("Distance from earth's center: %.7f AU\n", sun.App(now).Dis)
data := sun.Topo(now, geo, novas.REFR_NONE)
fmt.Printf("Distance from surface location: %.7f AU\n\n", data.Dis)
fmt.Printf("Altitude: %7.3f°\nAzimuth: %7.3f°\n\n", data.Alt, data.Az)
fmt.Println(" Azimuth Altitude")
t0 := novas.Date(now.Year(), int(now.Month()), now.Day(), 0, 0, 0, 0, now.Location())
t1, topo, err := sun.Rise(t0, geo, sundip, time.Second, novas.REFR_NONE)
if err != nil {
fmt.Println(err)
} else {
fmt.Printf("Sun rise: %8.2f° %s\n", topo.Az, t1)
t0 = t1
}
t1, topo, err = sun.High(t0, geo, time.Second, novas.REFR_NONE)
if err != nil {
fmt.Println(err)
} else {
fmt.Printf("High noon: %8.2f° %8.2f° %s\n", topo.Az, topo.Alt, t1)
t0 = t1
}
t1, topo, err = sun.Set(t0, geo, sundip, time.Second, novas.REFR_NONE)
if err != nil {
fmt.Println(err)
} else {
fmt.Printf("Sun set: %8.2f° %s\n", topo.Az, t1)
t0 = t1
}
t1, topo, err = sun.Low(t0, geo, time.Second, novas.REFR_NONE)
if err != nil {
fmt.Println(err)
} else {
fmt.Printf("Deep night:%8.2f° %8.2f° %s\n\n", topo.Az, topo.Alt, t1)
t0 = t1
}
fmt.Println("Start of seasons in northern hempisphere")
fmt.Println("Spring:", novas.Spring(now.Time.Year(), time.Second))
fmt.Println("Summer:", novas.Summer(now.Time.Year(), time.Second))
fmt.Println("Autumn:", novas.Autumn(now.Time.Year(), time.Second))
fmt.Println("Winter:", novas.Winter(now.Time.Year(), time.Second))
}