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STARLINK-31021 — Live Satellite Tracking (NORAD 58518)
Track STARLINK-31021 (NORAD catalog number 58518) live on the WatchSat interactive 3D globe above. Its position is propagated in real time from the latest CelesTrak two-line element set using the SGP4/SDP4 orbital model — the same math professional trackers run. It is object L of 2023's 191st orbital launch (COSPAR designation 2023-191L). It went up together with 21 other satellites from that launch still in the active catalog. As of this element set it had completed roughly 15,322 revolutions of Earth.
Moving at about 7.62 km/s, STARLINK-31021 flies in low Earth orbit at an altitude of roughly 489 × 491 km, completing one revolution every 94.3 minutes — about 15.3 trips around Earth per day. The orbit is essentially circular (eccentricity 0.0001). Its 43.0° inclination keeps its ground track over the tropics and lower mid-latitudes. Its orbital plane crosses the equator northbound at right ascension 158.7°. Earth's equatorial bulge drifts that plane westward about 5.64° per day.
Orbital elements
| Orbit regime | low Earth orbit (LEO) |
|---|---|
| Perigee × apogee altitude | ~489 km × 491 km |
| Inclination | 43.00° |
| Orbital period | 94.3 min (15.28 rev/day) |
| Eccentricity | 0.00010 |
| Element set epoch | 2026-09-07 |
| COSPAR designation | 2023-191L |
| NORAD catalog number | 58518 |
This page's orbital elements come from the CelesTrak catalog of 2026-09-08. The live 3D view above fetches its own current CelesTrak data when the page opens, through an edge cache that refreshes roughly every 30 minutes.
About the Starlink group
STARLINK-31021 is one of 10,717 SpaceX Starlink broadband satellites in the current WatchSat catalog — the largest satellite constellation ever flown. Starlink operates in low-Earth-orbit shells around 540–570 km. See the whole Starlink constellation move live in 3D.
Can you see STARLINK-31021 from the ground?
Sometimes. Like most low-Earth-orbit spacecraft, STARLINK-31021 is visible only around dawn and dusk, when your sky is dark but the satellite is still sunlit — and whether you can spot it depends on its size and reflectivity. See pass predictions for your location for when it is above your horizon and sunlit.
Related satellites
Nearest catalog neighbors of STARLINK-31021 in the Starlink group — usually craft from the same or adjacent launches:
- STARLINK-31011 (NORAD 58517)
- STARLINK-31010 (NORAD 58519)
- STARLINK-31028 (NORAD 58516)
- STARLINK-31003 (NORAD 58520)
- STARLINK-31017 (NORAD 58515)
- STARLINK-31015 (NORAD 58521)
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