Home › Other Active Satellites › ABS-4 (MOBISAT-1)
ABS-4 (MOBISAT-1) — Live Satellite Tracking (NORAD 28184)
Track ABS-4 (MOBISAT-1) (NORAD catalog number 28184) 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 2004, launched on the 7th orbital launch of that year (COSPAR designation 2004-007A). As of this element set it had completed roughly 5,316 revolutions of Earth.
Moving at about 3.08 km/s, ABS-4 (MOBISAT-1) flies a geosynchronous orbit roughly 35,786 km up: its 23.9-hour period matches Earth's rotation, but at 6.2° inclination it is not geostationary — seen from the ground it traces a daily figure-eight around a fixed longitude, swinging about 6° north and south of the equator. The orbit is essentially circular (eccentricity 0.0005). Its near-equatorial 6.2° inclination keeps it above the tropics at all times. Its orbital plane crosses the equator northbound at right ascension 71.0°.
Orbital elements
| Orbit regime | geostationary/geosynchronous orbit (GEO) |
|---|---|
| Perigee × apogee altitude | ~35,772 km × 35,815 km |
| Inclination | 6.24° |
| Orbital period | 1436.1 min (1.00 rev/day) |
| Eccentricity | 0.00052 |
| Element set epoch | 2026-09-07 |
| COSPAR designation | 2004-007A |
| NORAD catalog number | 28184 |
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
ABS-4 (MOBISAT-1) 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 ABS-4 (MOBISAT-1) from the ground?
Not with the naked eye. At its altitude ABS-4 (MOBISAT-1) 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 ABS-4 (MOBISAT-1) in the Other Active Satellites group — usually craft from the same or adjacent launches:
- USA 176 (DSP 22) (NORAD 28158)
- SHIYAN-1 (SY-1) (NORAD 28220)
- UFO 11 (USA 174) (NORAD 28117)
- YAMAL 202 (NORAD 28089)
- CHUANGXIN 1 (CX-1) (NORAD 28058)
- DMSP 5D-3 F16 (USA 172) (NORAD 28054)
Browse the Other Active Satellites directory or the full satellite directory · What is a TLE? · WatchSat live globe