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OPTICUBE 04 — Live Satellite Tracking (NORAD 41851)
Track OPTICUBE 04 (NORAD catalog number 41851) 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 D of 2016's 67th orbital launch (COSPAR designation 2016-067D). It went up together with 4 other satellites from that launch still in the active catalog. As of this element set it had completed roughly 53,745 revolutions of Earth.
Moving at about 7.60 km/s, OPTICUBE 04 flies in low Earth orbit at an altitude of roughly 533 × 554 km, completing one revolution every 95.4 minutes — about 15.1 trips around Earth per day. The orbit is essentially circular (eccentricity 0.0015). Its 98.1° 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 106.1°. Earth's equatorial bulge drifts that plane eastward about 1.05° per day.
Orbital elements
| Orbit regime | low Earth orbit (LEO) |
|---|---|
| Perigee × apogee altitude | ~533 km × 554 km |
| Inclination | 98.06° |
| Orbital period | 95.4 min (15.10 rev/day) |
| Eccentricity | 0.00149 |
| Element set epoch | 2026-09-06 |
| COSPAR designation | 2016-067D |
| NORAD catalog number | 41851 |
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
OPTICUBE 04 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 OPTICUBE 04 from the ground?
Sometimes. Like most low-Earth-orbit spacecraft, OPTICUBE 04 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 OPTICUBE 04 in the Other Active Satellites group — usually craft from the same or adjacent launches:
- CELTEE 1 (NORAD 41850)
- AEROCUBE 8D (NORAD 41852)
- RAVAN (NORAD 41849)
- AEROCUBE 8C (NORAD 41853)
- CAS-2T & KS-1Q (NORAD 41847)
- YUNHAI-1 01 (NORAD 41857)
Browse the Other Active Satellites directory or the full satellite directory · What is a TLE? · WatchSat live globe