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DLR-TUBSAT — Live Satellite Tracking (NORAD 25757)
Track DLR-TUBSAT (NORAD catalog number 25757) 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 B of 1999's 29th orbital launch (COSPAR designation 1999-029B).
Moving at about 7.51 km/s, DLR-TUBSAT flies in low Earth orbit at an altitude of roughly 714 × 736 km, completing one revolution every 99.1 minutes — about 14.5 trips around Earth per day. The orbit is essentially circular (eccentricity 0.0015). Its 98.7° retrograde, near-polar inclination is characteristic of a Sun-synchronous orbit — the type Earth-imaging and weather satellites use to revisit each spot at the same local solar time. Its orbital plane crosses the equator northbound at right ascension 248.5°. Earth's equatorial bulge drifts that plane eastward about 1.03° per day.
Orbital elements
| Orbit regime | low Earth orbit (LEO) |
|---|---|
| Perigee × apogee altitude | ~714 km × 736 km |
| Inclination | 98.68° |
| Orbital period | 99.1 min (14.52 rev/day) |
| Eccentricity | 0.00154 |
| Element set epoch | 2026-09-07 |
| COSPAR designation | 1999-029B |
| NORAD catalog number | 25757 |
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
DLR-TUBSAT 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 DLR-TUBSAT from the ground?
Sometimes. Like most low-Earth-orbit spacecraft, DLR-TUBSAT 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 DLR-TUBSAT in the Other Active Satellites group — usually craft from the same or adjacent launches:
- CXO (NORAD 25867)
- ABS-6 (NORAD 25924)
- SWAS (NORAD 25560)
- UFO 10 (USA 146) (NORAD 25967)
- ORBCOMM FM32 (NORAD 25982)
- XMM-NEWTON (NORAD 25989)
Browse the Other Active Satellites directory or the full satellite directory · What is a TLE? · WatchSat live globe