Your horizon. A sky in motion.
Find your city or choose coordinates. Inspect the Sun, Moon and planets, compare stars and follow an artificial satellite.
Calculated planetarium · Astronomy Engine · UTC input / TT ephemerides · HYG J2000 stars
LIVE UTC
N · 0° E · 90° S · 180° W · 270°
Drag to look around; scroll to zoom. Azimuth 0.0° · altitude 20.0° · field of view 100.0°. The grid is local altitude/azimuth.
Observe with context
Object directions and disk sizes are calculated; overlays and foregrounds help illustrate them. Saved views keep your location, time, camera and settings. Video capture follows the selected UTC speed and uses the same recording and entitlement infrastructure as the simulator.
Frames, approximations and sources ↗