CAS500 Satellite Bus
Data current as of 2026-07-20.
The CAS500 bus accounts for 8 cataloged objects, of which 7 are in orbit and 7 are active. Most are built by KRAI. The largest operator on this bus is DAPA. The first launched in 2021, the most recent in 2026.
7
In orbit
7
Active
8
Total launched
0
Reentered
CAS500 launched per year
Still in orbit Click a year to list its satellites.
Typical specifications
Most common values across cataloged CAS500 satellites.
| Manufacturer | KRAI |
|---|---|
| Purpose | Reconnaissance, radar |
| Launch mass | 800 kg |
| Dry mass | 750 kg |
| Length | 2.9 m |
| Diameter | 1.9 m |
| Span | 6 m |
| Shape | Hex+3 pan |
| Power | 4 deployable fixed solar arrays, batteries |
| Propulsion | ? |
| Design life | 4 years |
| Equipment | AEISS-C |
| Typical orbit | 96 min period, 45° inclination |
Top operators
DAPA 4 KAIST 2 Defense Acquisition Program Administration (DAPA) 1 KARI 1
Top countries
KR 4 SKOR 4
CAS500 satellites
Track any of them live in KeepTrack.
| Name | NORAD | COSPAR | Owner | Launched | Orbit | Status | Track |
|---|---|---|---|---|---|---|---|
| CAS500-2 | 69013 | 2026-100AK | KAIST | May 3, 2026 | 95 min, 97.4° | Inactive | ◉ |
| CAS500-3 | 66655 | 2025-274F | KAIST | Nov 26, 2025 | 97 min, 97.7° | Active | ◉ |
| KORSAT-4 | 66293 | 2025-248A | DAPA | Nov 2, 2025 | 96 min, 45.4° | Active | ◉ |
| KORSAT-3 KORSAT-3 | 63630 | 2025-081A | DAPA | Apr 22, 2025 | 96 min, 45.4° | Active | ◉ |
| KORSAT-2 ADD-425-2 | 62377 | 2024-247A | Defense Acquisition Program Administration (DAPA) | Dec 21, 2024 | 96 min, 45.4° | Active | ◉ |
| KORSAT-1 425 Project SAR | 59452 | 2024-066L | DAPA | Apr 7, 2024 | 96 min, 45.4° | Active | ◉ |
| KORSAT 7 Korsat-7 | 58463 | 2023-185B | DAPA | Dec 1, 2023 | 96 min, 97.6° | Active | ◉ |
| CAS500-1 CAS500-1 | 47932 | 2021-022A | KARI | Mar 22, 2021 | 95 min, 97.4° | Active | ◉ |
Frequently asked questions
How many CAS500 satellites are there?
The catalog lists 8 objects built on the CAS500 bus. 7 are in orbit and 0 have reentered.
How many CAS500 satellites are in orbit?
7 CAS500 objects are currently in orbit, of which 7 carry an active status.
Who builds the CAS500 bus?
The CAS500 bus is most commonly built by KRAI.
When did the first CAS500 satellite launch?
The first cataloged CAS500 satellite launched in 2021, and the most recent in 2026.