Mercury Satellite Bus
Data current as of 2026-07-22.
The Mercury bus accounts for 6 cataloged objects, of which 0 are in orbit and 0 are active. 6 have reentered. Most are built by MCDA. The largest operator on this bus is MSC. The first launched in 1961, the most recent in 1963.
0
In orbit
0
Active
6
Total launched
6
Reentered
Mercury launched per year
Still in orbit Since reentered Click a year to list its satellites.
Typical specifications
Most common values across cataloged Mercury satellites.
| Manufacturer | MCDA |
|---|---|
| Launch mass | 1170 kg |
| Dry mass | 1170 kg |
| Length | 2.9 m |
| Diameter | 1.8 m |
| Span | 2.9 m |
| Shape | Frust |
Top operators
MSC 3 NASA 2 STGL 1
Top countries
US 6
Mercury satellites
Track any of them live in KeepTrack.
| Name | NORAD | COSPAR | Owner | Launched | Orbit | Status | Track |
|---|---|---|---|---|---|---|---|
| MERCURY ATLAS 9 Faith Seven | 00576 | 1963-015A | MSC | May 15, 1963 | 89 min, 32.5° | Reentered | ◉ |
| MERCURY ATLAS 8 Sigma Seven | 00433 | 1962-052A | MSC | Oct 3, 1962 | 89 min, 32.5° | Reentered | ◉ |
| MERCURY ATLAS 7 Aurora Seven | 00295 | · | MSC | May 24, 1962 | · | Reentered | ◉ |
| MERCURY ATLAS 6 Friendship Seven | 00240 | · | NASA | Feb 20, 1962 | · | Reentered | ◉ |
| MERCURY ATLAS 5 Mercury MA-5 | 00208 | · | NASA | Nov 29, 1961 | · | Reentered | ◉ |
| MERCURY ATLAS 4 Mercury MA-4 | 00183 | · | STGL | Sep 13, 1961 | · | Reentered | ◉ |
Frequently asked questions
How many Mercury satellites are there?
The catalog lists 6 objects built on the Mercury bus. 0 are in orbit and 6 have reentered.
How many Mercury satellites are in orbit?
0 Mercury objects are currently in orbit, of which 0 carry an active status.
Who builds the Mercury bus?
The Mercury bus is most commonly built by MCDA.
When did the first Mercury satellite launch?
The first cataloged Mercury satellite launched in 1961, and the most recent in 1963.