Satellite · NORAD 38749 · COSPAR 2012-045A
INTELSAT 21 (IS-21)
- Operator Intelsat
- Constellation Intelsat fleet
- Country United States
Altitude now
35,778.8km
SGP4 propagation
Velocity
3.08km/s
Inclination
0.02°
Period
23.9 h
1,436.1 min
Perigee
35,776km
Apogee
35,796km
orbit freshOrbit updated 11 h ago · element epoch 11 Sept 2026 11:58 UTC (8.2 h old)· Metadata updated 11 h ago
Live position
Ground track & current position
Propagated client-side every 5 s from the latest element set (SGP4). Accuracy degrades with element age.
Loading ground track…
- Latitude
- 0.028° N
- Longitude
- 57.979° W
- Altitude
- 35778.8 km
- Velocity
- 3.075 km/s
- past 45 min
- next 90 min
- first fix from server render · element epoch 11 Sept 2026 11:58 UTC
Mission
Mission & classification
Ownership
Operator & country
- Operator
- Intelsat
- SATCAT owner code
- ITSO · Intelsat
- Country
- United States US
Launch
Launch
- Launch date
- 19 Aug 2012
- COSPAR launch id
- 2012-045
Objects from the same launch · 1
- BLOCK DM-SL R/B38750Rocket bodyInactive
Change log
History
| Field | Change | Source | Date |
|---|---|---|---|
| Owner Code | ∅ → ITSO | Celestrak Satcat | 11 Sept 2026 18:53 UTC |
| Orbit Class | ∅ → GEO | Celestrak | 11 Sept 2026 18:53 UTC |
Regulatory
UN registration
Transparency
Sources & provenance
CelesTrakcommunity
Orbital data courtesy of CelesTrak (Dr. T.S. Kelso).
last sync 11 h ago
CelesTrak SATCATcommunity
Satellite catalog data courtesy of CelesTrak.
last sync 11 h ago
Field provenance
| Field | Source | Observed | Confidence |
|---|---|---|---|
| Canonical Name | CelesTrak SATCAT | 11 Sept 2026 18:53 UTC | 100% |
| Decay Date | CelesTrak SATCAT | 11 Sept 2026 18:53 UTC | 100% |
| Launch Date | CelesTrak SATCAT | 11 Sept 2026 18:53 UTC | 100% |
| Object Type | CelesTrak SATCAT | 11 Sept 2026 18:53 UTC | 100% |
| Orbital Elements | CelesTrak | 11 Sept 2026 18:53 UTC | 100% |
| Owner Code | CelesTrak SATCAT | 11 Sept 2026 18:53 UTC | 100% |
| Status | CelesTrak SATCAT | 11 Sept 2026 18:53 UTC | 100% |
Timeline
Events
No events detected for this object yet. Launches, decays and orbit changes are generated by the derived-analytics connector.
Reference
Identifiers
- NORAD catalogue number
- 38749
- COSPAR / international designator
- 2012-045A
- SatelliteIndex id
- sat_01M28X2SWWDCTX9MYDGY0F69RX
- Canonical slug
- intelsat-21-is-21-38749
Orbit class, mission type and constellation membership are derived by SatelliteIndex (Communications) — see the methodology. Positions are propagated estimates, not tracking measurements; never use them for conjunction assessment.