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UFO 10 (USA 146) — Live Satellite Tracking (NORAD 25967)
Track UFO 10 (USA 146) (NORAD catalog number 25967) 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 has been on orbit since 1999, launched on the 63rd orbital launch of that year (COSPAR designation 1999-063A). As of this element set it had completed roughly 9,817 revolutions of Earth.
Moving at about 3.08 km/s, UFO 10 (USA 146) flies a geosynchronous orbit roughly 35,786 km up: its 23.9-hour period matches Earth's rotation, but at 9.9° inclination it is not geostationary — seen from the ground it traces a daily figure-eight around a fixed longitude, swinging about 10° north and south of the equator. The orbit is essentially circular (eccentricity 0.0004). Its near-equatorial 9.9° inclination keeps it above the tropics at all times. Its orbital plane crosses the equator northbound at right ascension 26.8°.
Orbital elements
| Orbit regime | geostationary/geosynchronous orbit (GEO) |
|---|---|
| Perigee × apogee altitude | ~35,778 km × 35,811 km |
| Inclination | 9.91° |
| Orbital period | 1436.1 min (1.00 rev/day) |
| Eccentricity | 0.00039 |
| Element set epoch | 2026-09-07 |
| COSPAR designation | 1999-063A |
| NORAD catalog number | 25967 |
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 Other Active Satellites group
UFO 10 (USA 146) is one of 4,471 active satellites in WatchSat's general catalog — the broad population of Earth-observation, communications, science, amateur-radio and technology spacecraft outside the giant broadband constellations. Browse all other active satellites live in 3D.
Can you see UFO 10 (USA 146) from the ground?
Not with the naked eye. At its altitude UFO 10 (USA 146) is far beyond unaided visibility — following satellites this high takes a telescope and good timing. You can still track it precisely in the live 3D view above, or check pass predictions for your location.
Related satellites
Nearest catalog neighbors of UFO 10 (USA 146) in the Other Active Satellites group — usually craft from the same or adjacent launches:
- ORBCOMM FM32 (NORAD 25982)
- XMM-NEWTON (NORAD 25989)
- TERRA (NORAD 25994)
- ABS-6 (NORAD 25924)
- CXO (NORAD 25867)
- ASIASTAR (NORAD 26107)
Browse the Other Active Satellites directory or the full satellite directory · What is a TLE? · WatchSat live globe