Visibility Planner

Try: Sirius Betelgeuse Polaris Vega Rigel Arcturus Antares Alpha Centauri

Or enter coordinates directly: 101.287 −16.716 (decimal °) · 06:44:59 −16:42:58 (sexagesimal RA Dec) · 06h44m59s −16d42m58s (h m s / d m s)

Observatory

Latitude (°N)

Longitude (°E)

Mont-Mégantic (1111 m)

Daylight saving (DST +1h)

Airmass — UTC time × day of year

Airmass for selected night

Barycentric velocity (Earth orbital component only)