San Marco Satellite Bus
Data current as of 2026-07-20.
The San Marco bus accounts for 5 cataloged objects, of which 0 are in orbit and 0 are active. 5 have reentered. Most are built by CRA. The largest operator on this bus is CRS. The first launched in 1964, the most recent in 1988.
0
In orbit
0
Active
5
Total launched
5
Reentered
San Marco launched per year
Still in orbit Since reentered Click a year to list its satellites.
Typical specifications
Most common values across cataloged San Marco satellites.
| Manufacturer | CRA |
|---|---|
| Purpose | Atmospheric research |
| Launch mass | 116 kg |
| Dry mass | 116 kg |
| Length | 0.7 m |
| Diameter | 0.7 m |
| Span | 0.7 m |
| Shape | Sphere + 4 Ant |
| Power | Solar cells, batteries |
| Propulsion | None |
| Design life | 1.5 years |
| Equipment | DBI, WATI, IVI, ASSI, EFI |
Top operators
CRS 4 ASI 1
Top countries
I 5
San Marco satellites
Track any of them live in KeepTrack.
| Name | NORAD | COSPAR | Owner | Launched | Orbit | Status | Track |
|---|---|---|---|---|---|---|---|
| SAN MARCO 5 San Marco 5 | 19013 | 1988-026A | ASI | Mar 25, 1988 | 88 min, 3.0° | Reentered | ◉ |
| SAN MARCO 4 (C-2) San Marco 4 | 07154 | 1974-009A | CRS | Feb 18, 1974 | 88 min, 2.9° | Reentered | ◉ |
| SAN MARCO 3 San Marco 3 | 05176 | 1971-036A | CRS | Apr 24, 1971 | 94 min, 3.2° | Reentered | ◉ |
| SAN MARCO 2 San Marco 2 | 02761 | 1967-038A | CRS | Apr 26, 1967 | 88 min, 2.9° | Reentered | ◉ |
| SAN MARCO 1 San Marco 1 | 00957 | 1964-084A | CRS | Dec 15, 1964 | 88 min, 37.8° | Reentered | ◉ |
Frequently asked questions
How many San Marco satellites are there?
The catalog lists 5 objects built on the San Marco bus. 0 are in orbit and 5 have reentered.
How many San Marco satellites are in orbit?
0 San Marco objects are currently in orbit, of which 0 carry an active status.
Who builds the San Marco bus?
The San Marco bus is most commonly built by CRA.
When did the first San Marco satellite launch?
The first cataloged San Marco satellite launched in 1964, and the most recent in 1988.