Stationary is the first clue
Over minutes, a planet keeps nearly the same relationship to surrounding stars and drifts only with Earth rotation. Aircraft and satellites change position much faster.
Venus stays near the Sun
Venus never appears anywhere in the sky at any time; it remains relatively close to the Sun and is therefore an evening or morning object. A Venus answer at the wrong geometry is a poor answer.
Jupiter can dominate the night
Jupiter can be extraordinarily bright and appears farther from the Sun than Venus can. Thin cloud can make it look larger, colored or haloed.
Use an astronomy chart for exact identity
Sky Event Radar can classify a stationary bright point as a celestial-object pattern, but exact planet or star identity should be verified against a current ephemeris or sky chart for the time and place.
Verification sources
Use NASA/JPL CNEOS, CelesTrak, ADSB.lol, NOAA SWPC and Launch Library 2 according to their coverage and time window. Sky Event Radar keeps missing evidence explicit.