Satellite · NORAD 56164 · COSPAR 2023-050C
CHECKMATE 4
- Operator United States
- Constellation —
- Country United States
Altitude now
951.7km
SGP4 propagation
Velocity
7.38km/s
Inclination
81.01°
Period
104.0 min
104.0 min
Perigee
942km
Apogee
952km
orbit freshOrbit updated 3 h ago · element epoch 11 Sept 2026 20:24 UTC (11.3 h old)· Metadata updated 3 h ago
Live position
Ground track & current position
Propagated client-side every 5 s from the latest element set (SGP4). Accuracy degrades with element age.
Loading ground track…
- Latitude
- 10.912° S
- Longitude
- 62.720° E
- Altitude
- 951.7 km
- Velocity
- 7.375 km/s
- past 45 min
- next 90 min
- first fix from server render · element epoch 11 Sept 2026 20:24 UTC
Mission
Mission & classification
Ownership
Operator & country
- Operator
- —
- SATCAT owner code
- US · United States
- Country
- United States US
Launch
Launch
- Launch date
- 02 Apr 2023
- COSPAR launch id
- 2023-050
Objects from the same launch · 9
- CHECKMATE 856162PayloadActive
- CHECKMATE 556163PayloadActive
- CHECKMATE 656165PayloadActive
- CHECKMATE 756166PayloadActive
- CHECKMATE 256167PayloadActive
- CHECKMATE 156168PayloadActive
- CHECKMATE 356169PayloadActive
- BB 256170PayloadActive
- BB 156171PayloadActive
Change log
History
| Field | Change | Source | Date |
|---|---|---|---|
| Country Code | ∅ → US | Celestrak Satcat | 11 Sept 2026 18:53 UTC |
| Owner Code | ∅ → US | Celestrak Satcat | 11 Sept 2026 18:53 UTC |
| Orbit Class | ∅ → LEO | Celestrak | 11 Sept 2026 18:53 UTC |
Regulatory
UN registration
Transparency
Sources & provenance
CelesTrakcommunity
Orbital data courtesy of CelesTrak (Dr. T.S. Kelso).
last sync 32 min ago
CelesTrak SATCATcommunity
Satellite catalog data courtesy of CelesTrak.
last sync 13 h ago
Field provenance
| Field | Source | Observed | Confidence |
|---|---|---|---|
| Canonical Name | CelesTrak SATCAT | 11 Sept 2026 18:53 UTC | 100% |
| Decay Date | CelesTrak SATCAT | 11 Sept 2026 18:53 UTC | 100% |
| Launch Date | CelesTrak SATCAT | 11 Sept 2026 18:53 UTC | 100% |
| Object Type | CelesTrak SATCAT | 11 Sept 2026 18:53 UTC | 100% |
| Orbital Elements | CelesTrak | 12 Sept 2026 07:07 UTC | 100% |
| Owner Code | CelesTrak SATCAT | 11 Sept 2026 18:53 UTC | 100% |
| Status | CelesTrak SATCAT | 11 Sept 2026 18:53 UTC | 100% |
Quality flags
- UNKNOWN_OPERATORactive payload without resolved operator11 Sept 2026
Timeline
Events
No events detected for this object yet. Launches, decays and orbit changes are generated by the derived-analytics connector.
Reference
Identifiers
- NORAD catalogue number
- 56164
- COSPAR / international designator
- 2023-050C
- SatelliteIndex id
- sat_01M28X2SXKCREZ0T12ZPS98R44
- Canonical slug
- checkmate-4-56164
Orbit class, mission type and constellation membership are derived by SatelliteIndex (Unknown) — see the methodology. Positions are propagated estimates, not tracking measurements; never use them for conjunction assessment.