ZenithView
An interactive sky map showing celestial objects — stars, planets, the Sun, Moon, Starlink satellites, deep-sky objects, and zodiac signs — as seen from any location on Earth, with live Starlink pass tracking.
Kind
GitHub repo
Author
Chang H. Ree (chr)
Added
August 26, 2026
ZenithView renders an azimuth-altitude sky dome for any observer location, with Sun/Moon/planet tracking, ~8,900 bright stars, ~550 deep-sky objects, zodiac markers, and live Starlink satellite positions (SGP4-propagated from Celestrak TLEs) — including 10-minute pass-prediction tracks for satellites above the horizon. Supports a configurable time slider (±7 days), auto-refresh, and a custom watch list for tracked objects.
Built with vanilla JavaScript and D3.js v7 — no build step or backend required.
Live demo: data.kasi.re.kr/app/zenithview