RS Satellite Bus
Data current as of 2026-07-20.
The RS bus accounts for 5 cataloged objects, of which 2 are in orbit and 0 are active. 3 have reentered. Most are built by ISAC. The largest operator on this bus is Indian Space Research Organisation. The first launched in 1978, the most recent in 1983.
2
In orbit
0
Active
5
Total launched
3
Reentered
RS launched per year
Still in orbit Since reentered Click a year to list its satellites.
Typical specifications
Most common values across cataloged RS satellites.
| Manufacturer | ISAC |
|---|---|
| Purpose | Amateur radio communication |
| Launch mass | 40 kg |
| Dry mass | 40 kg |
| Length | 0.7 m |
| Diameter | 0.6 m |
| Span | 0.7 m |
| Shape | Poly |
| Power | Solar cells, batteries |
| Design life | 9 days (#D1); 1.5 years (#D2) |
| Typical orbit | 120 min period, 83° inclination |
Top operators
Indian Space Research Organisation 3 MAIO/MOM 2
Top countries
IN 3 SU 2
RS satellites
Track any of them live in KeepTrack.
| Name | NORAD | COSPAR | Owner | Launched | Orbit | Status | Track |
|---|---|---|---|---|---|---|---|
| ROHINI 3 Rohini RS-D-2 | 14002 | 1983-033A | ISRO | Apr 17, 1983 | 87 min, 46.5° | Reentered | ◉ |
| ROHINI 2 Rohini RS-D-1 | 12491 | 1981-051A | ISRO | May 31, 1981 | 88 min, 46.3° | Reentered | ◉ |
| ROHINI 1 Rohini RS-1 | 11899 | 1980-062A | ISRO | Jul 18, 1980 | 88 min, 44.7° | Reentered | ◉ |
| RADIO 2 (RS-2) Radio RS-2 | 11086 | 1978-100C | MAIO/MOM | Oct 26, 1978 | 120 min, 82.5° | Inactive | ◉ |
| RADIO 1 (RS-1) Radio RS-1 | 11085 | 1978-100B | MAIO/MOM | Oct 26, 1978 | 120 min, 82.5° | Inactive | ◉ |
Frequently asked questions
How many RS satellites are there?
The catalog lists 5 objects built on the RS bus. 2 are in orbit and 3 have reentered.
How many RS satellites are in orbit?
2 RS objects are currently in orbit, of which 0 carry an active status.
Who builds the RS bus?
The RS bus is most commonly built by ISAC.
When did the first RS satellite launch?
The first cataloged RS satellite launched in 1978, and the most recent in 1983.