INTELSAT 18 (IS-18)
Launch
Launched on Oct 5, 2011 from 45/1, Kazakhstan aboard a Zenit 3SLB.
Zenit-3SLB | Intelsat 18 →Live · TLE epoch 2026-10-23 19:30 UTC
Orbit class
GEO — Geostationary (~35,786 km, equatorial)
Operator
Intelsat
Country
Intelsat
Manufacturer
—
Launched
Oct 5, 2011
Mass
—
Apogee
35,803 km
Perigee
35,785 km
Inclination
0.01°
Period
23.94 h
Part of the Intelsat constellation · this satellite is one of 27 (planned: 50)
Global GEO comms fleet. ~50 active satellites.
Altitude history
Apogee and perigee for INTELSAT 18 (IS-18) across 148 days of archived orbital elements (150 element sets, one per day).
Trend
Stable
Change
-0.6 km
Rate
-0.00 km/day
Now
35785 × 35803 km
Apogee Perigee
Derived from our own archive of CelesTrak orbital elements, sampled every 3 hours. Short windows show drag and station-keeping; they are not a reentry prediction.
Related satellites
Sources & further reading
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