SAS Satellite Bus
Data current as of 2026-07-20.
The SAS bus accounts for 4 cataloged objects, of which 0 are in orbit and 0 are active. 4 have reentered. Most are built by APL. The largest operator on this bus is NASA. The first launched in 1970, the most recent in 1979.
0
In orbit
0
Active
4
Total launched
4
Reentered
SAS launched per year
Still in orbit Since reentered Click a year to list its satellites.
Typical specifications
Most common values across cataloged SAS satellites.
| Manufacturer | APL |
|---|---|
| Launch mass | 143 kg |
| Dry mass | 143 kg |
| Length | 1.3 m |
| Diameter | 0.6 m |
| Span | 3.9 m |
| Shape | Cyl + 4 Pan |
Top operators
Top countries
US 4
SAS satellites
Track any of them live in KeepTrack.
| Name | NORAD | COSPAR | Owner | Launched | Orbit | Status | Track |
|---|---|---|---|---|---|---|---|
| MAGSAT Magsat | 11604 | 1979-094A | GSFC | Oct 30, 1979 | 88 min, 96.7° | Reentered | ◉ |
| EXPLORER 53 SAS 3 | 07788 | 1975-037A | GSFC | May 7, 1975 | 89 min, 3.0° | Reentered | ◉ |
| EXPLORER 48 (SAS 2) SAS 2 | 06282 | · | GSFC | Nov 15, 1972 | · | Reentered | ◉ |
| EXPLORER 42 (SAS-1) Uhuru | 04797 | 1970-107A | GSFC | Dec 12, 1970 | 90 min, 3.0° | Reentered | ◉ |
Frequently asked questions
How many SAS satellites are there?
The catalog lists 4 objects built on the SAS bus. 0 are in orbit and 4 have reentered.
How many SAS satellites are in orbit?
0 SAS objects are currently in orbit, of which 0 carry an active status.
Who builds the SAS bus?
The SAS bus is most commonly built by APL.
When did the first SAS satellite launch?
The first cataloged SAS satellite launched in 1970, and the most recent in 1979.