I4K Satellite Bus
Data current as of 2026-07-20.
The I4K bus accounts for 3 cataloged objects, of which 3 are in orbit and 3 are active. Most are built by ISAC. The largest operator on this bus is INAVC/ISRO. The first launched in 2013, the most recent in 2025.
3
In orbit
3
Active
3
Total launched
0
Reentered
I4K launched per year
Still in orbit Click a year to list its satellites.
Typical specifications
Most common values across cataloged I4K satellites.
| Manufacturer | ISAC |
|---|---|
| Purpose | Communication |
| Launch mass | 2650 kg |
| Dry mass | 1500 kg |
| Length | 4 m |
| Diameter | 1.8 m |
| Span | 12 m |
| Shape | Box + 2 pan |
| Power | 2 deployable solar arrays, batteries |
| Propulsion | ISRO LAM |
| Design life | 14 years |
| Equipment | Ka-band high throughput payload |
| Typical orbit | 1436 min period, 0° inclination |
Top operators
Top countries
IN 2 IND 1
I4K satellites
Track any of them live in KeepTrack.
Frequently asked questions
How many I4K satellites are there?
The catalog lists 3 objects built on the I4K bus. 3 are in orbit and 0 have reentered.
How many I4K satellites are in orbit?
3 I4K objects are currently in orbit, of which 3 carry an active status.
Who builds the I4K bus?
The I4K bus is most commonly built by ISAC.
When did the first I4K satellite launch?
The first cataloged I4K satellite launched in 2013, and the most recent in 2025.