SO-M Satellite Bus
Data current as of 2026-07-20.
The SO-M bus accounts for 12 cataloged objects, of which 2 are in orbit and 0 are active. 10 have reentered. Most are built by NPOL. The largest operator on this bus is IKI/BABTS. The first launched in 1972, the most recent in 1996.
2
In orbit
0
Active
12
Total launched
10
Reentered
SO-M launched per year
Still in orbit Since reentered Click a year to list its satellites.
Typical specifications
Most common values across cataloged SO-M satellites.
| Manufacturer | NPOL |
|---|---|
| Purpose | Science, magnetosphere |
| Launch mass | 845 kg |
| Dry mass | 845 kg |
| Length | 2 m |
| Diameter | 2.5 m |
| Span | 10 m |
| Shape | Cyl + 4 Pan |
| Power | 4 deployable fixed solar arrays, batteries |
| Typical orbit | 347 min period, 0° inclination |
Top operators
IKI/BABTS 11 IKI/TSSKBP 1
Top countries
SU 10 RU 2
SO-M satellites
Track any of them live in KeepTrack.
| Name | NORAD | COSPAR | Owner | Launched | Orbit | Status | Track |
|---|---|---|---|---|---|---|---|
| INTERBALL AURORA Interbol-2 | 24293 | 1996-050C | IKI/TSSKBP | Aug 29, 1996 | 347 min, 62.7° | Inactive | ◉ |
| INTERBOL 1 Interbol-1 | 23632 | 1995-039A | IKI/BABTS | Aug 2, 1995 | 5452 min, 66.2° | Reentered | ◉ |
| PROGNOZ 10 Prognoz-10-IK | 15661 | 1985-033A | IKI/BABTS | Apr 26, 1985 | 5784 min, 76.8° | Reentered | ◉ |
| PROGNOZ 9 Prognoz-9 | 14163 | 1983-067A | IKI/BABTS | Jul 1, 1983 | · | Inactive | ◉ |
| PROGNOZ 8 Prognoz-8 | 12116 | 1980-103A | IKI/BABTS | Dec 25, 1980 | 5688 min, 65.8° | Reentered | ◉ |
| PROGNOZ 7 Prognoz-7 | 11088 | 1978-101A | IKI/BABTS | Oct 30, 1978 | 5886 min, 69.5° | Reentered | ◉ |
| PROGNOZ 6 Prognoz-6 | 10370 | 1977-093A | IKI/BABTS | Sep 22, 1977 | 5664 min, 52.5° | Reentered | ◉ |
| PROGNOZ 5 Prognoz-5 | 09557 | 1976-112A | IKI/BABTS | Nov 25, 1976 | 5729 min, 66.6° | Reentered | ◉ |
| PROGNOZ 4 Prognoz-4 | 08510 | 1975-122A | IKI/BABTS | Dec 22, 1975 | 92 min, 65.0° | Reentered | ◉ |
| PROGNOZ 3 Prognoz-3 | 06364 | 1973-009A | IKI/BABTS | Feb 15, 1973 | 5769 min, 65.0° | Reentered | ◉ |
| PROGNOZ 2 Prognoz-2 | 06068 | 1972-046A | IKI/BABTS | Jun 29, 1972 | 91 min, 65.0° | Reentered | ◉ |
| PROGNOZ 1 Prognoz | 05941 | 1972-029A | IKI/BABTS | Apr 14, 1972 | 5774 min, 64.9° | Reentered | ◉ |
Frequently asked questions
How many SO-M satellites are there?
The catalog lists 12 objects built on the SO-M bus. 2 are in orbit and 10 have reentered.
How many SO-M satellites are in orbit?
2 SO-M objects are currently in orbit, of which 0 carry an active status.
Who builds the SO-M bus?
The SO-M bus is most commonly built by NPOL.
When did the first SO-M satellite launch?
The first cataloged SO-M satellite launched in 1972, and the most recent in 1996.