ATK-A100 Satellite Bus
Data current as of 2026-07-20.
The ATK-A100 bus accounts for 5 cataloged objects, of which 5 are in orbit and 5 are active. Most are built by SWALES. The largest operator on this bus is NASA. All were launched in 2007.
5
In orbit
5
Active
5
Total launched
0
Reentered
ATK-A100 launched per year
Still in orbit Click a year to list its satellites.
Typical specifications
Most common values across cataloged ATK-A100 satellites.
| Manufacturer | SWALES |
|---|---|
| Purpose | Research |
| Launch mass | 125 kg |
| Dry mass | 76 kg |
| Length | 0.5 m |
| Diameter | 0.8 m |
| Span | 49.6 m |
| Shape | Box + 2 Ant |
| Power | Solar cells, batteries |
| Design life | 2 years |
| Equipment | see above |
| Typical orbit | 1636 min period, 7° inclination |
Top operators
Top countries
US 5
ATK-A100 satellites
Track any of them live in KeepTrack.
| Name | NORAD | COSPAR | Owner | Launched | Orbit | Status | Track |
|---|---|---|---|---|---|---|---|
| THEMIS E THEMIS E | 30798 | 2007-004E | GSFC | Feb 17, 2007 | 1636 min, 6.5° | Active | ◉ |
| THEMIS D THEMIS D | 30797 | 2007-004D | GSFC | Feb 17, 2007 | 1644 min, 7.9° | Active | ◉ |
| ARTEMIS P2 (THEMIS C) THEMIS C | 30582 | 2007-004C | GSFC | Feb 17, 2007 | 70484 min, 25.6° | Active | ◉ |
| ARTEMIS P1 (THEMIS B) THEMIS B | 30581 | 2007-004B | GSFC | Feb 17, 2007 | 70124 min, 16.6° | Active | ◉ |
| THEMIS A THEMIS A | 30580 | 2007-004A | GSFC | Feb 17, 2007 | 1639 min, 8.7° | Active | ◉ |
Frequently asked questions
How many ATK-A100 satellites are there?
The catalog lists 5 objects built on the ATK-A100 bus. 5 are in orbit and 0 have reentered.
How many ATK-A100 satellites are in orbit?
5 ATK-A100 objects are currently in orbit, of which 5 carry an active status.
Who builds the ATK-A100 bus?
The ATK-A100 bus is most commonly built by SWALES.
When did the first ATK-A100 satellite launch?
The cataloged ATK-A100 satellites all launched in 2007.