{"version":1,"generatedAt":"2026-10-28T10:38:56.207Z","kind":"greatest-elongation","name":"Mercury at greatest eastern elongation, 29 Oct 2025","at":"2025-10-29T22:00:00.000Z","planets":[{"name":"Mercury","magnitude":-0.1}],"place":{"ra":15.818,"dec":-22.96,"frame":"J2000","raUnit":"hours","decUnit":"degrees"},"degreesFromSun":23.9,"sky":"evening","elongationDeg":23.9,"litFraction":0.63,"visibility":{"longitude":0,"timeZone":"UTC","twilightSunAltitude":-6,"bands":[{"latitude":60,"verdict":"lost","summary":"It is below the horizon whenever the sky is dark","best":{"at":"2025-10-29T17:00:00.000Z","altitude":-4.6,"azimuth":230,"sunAltitude":-6.5}},{"latitude":45,"verdict":"lost","summary":"Lost in the horizon's haze: 1° up at best once it is dark","best":{"at":"2025-10-29T17:30:00.000Z","altitude":0.9,"azimuth":235,"sunAltitude":-7.3}},{"latitude":30,"verdict":"low","summary":"Low: 8° up in the WSW at 17:40; a clear, flat horizon needed","best":{"at":"2025-10-29T17:40:00.000Z","altitude":7.5,"azimuth":238,"sunAltitude":-6}},{"latitude":15,"verdict":"clear","summary":"11° up in the WSW at 18:00","best":{"at":"2025-10-29T18:00:00.000Z","altitude":11,"azimuth":242,"sunAltitude":-7.4}},{"latitude":0,"verdict":"clear","summary":"15° up in the WSW at 18:10","best":{"at":"2025-10-29T18:10:00.000Z","altitude":15.3,"azimuth":246,"sunAltitude":-6.4}},{"latitude":-15,"verdict":"clear","summary":"16° up in the WSW at 18:30","best":{"at":"2025-10-29T18:30:00.000Z","altitude":16.3,"azimuth":250,"sunAltitude":-7.3}},{"latitude":-30,"verdict":"clear","summary":"17° up in the WSW at 18:50","best":{"at":"2025-10-29T18:50:00.000Z","altitude":16.7,"azimuth":253,"sunAltitude":-7}},{"latitude":-45,"verdict":"clear","summary":"16° up in the WSW at 19:20","best":{"at":"2025-10-29T19:20:00.000Z","altitude":15.5,"azimuth":253,"sunAltitude":-6.5}}]},"links":{"page":"https://www.whatthestar.com/planets/mercury-greatest-elongation-2025-10-29","map":"https://www.whatthestar.com/explore?ra=15.818&dec=-22.96&fov=40&t=2025-10-29T22%3A00%3A00.000Z"},"sources":[{"name":"P. Bretagnon and G. Francou, VSOP87, the planetary theory the map draws, held to JPL’s DE441 within about an arcsecond over 1900–2100","url":"https://www.whatthestar.com/credits#method-planets"},{"name":"U.S. Naval Observatory and Sea and Sky’s Astronomy Calendar of Celestial Events: the dates and angles the tests hold these to","url":"https://aa.usno.navy.mil/data/"},{"name":"A. Mallama and J. Hilton (2018) and the Astronomical Almanac’s phase-angle series: the planets’ magnitudes","url":"https://www.whatthestar.com/credits#method-planets"},{"name":"J. Meeus, Astronomical Algorithms, ch. 25: the Sun, for the twilight each latitude is judged in","url":"https://www.whatthestar.com/credits#method-sun"}]}