Satellite · NORAD 35684 · COSPAR 2009-041D
APRIZESAT 4
- Operator United States
- Constellation —
- Country United States
Altitude now
620.1km
SGP4 propagation
Velocity
7.56km/s
Inclination
98.14°
Period
97.0 min
97.0 min
Perigee
586km
Apogee
648km
orbit freshOrbit updated 21 h ago · element epoch 11 Sept 2026 16:50 UTC (8.6 h old)· Metadata updated 21 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
- 60.810° N
- Longitude
- 153.883° E
- Altitude
- 620.1 km
- Velocity
- 7.558 km/s
- past 45 min
- next 90 min
- first fix from server render · element epoch 11 Sept 2026 16:50 UTC
Mission
Mission & classification
- Mission type derived
- Unknown
- Object type
- Payload
- SATCAT ops status
- Operational [+]
- Radar cross-section
- 0.1 m²
Ownership
Operator & country
- Operator
- —
- SATCAT owner code
- US · United States
- Country
- United States US
Launch
Launch
- Launch date
- 29 Jul 2009
- COSPAR launch id
- 2009-041
- Launch site
- Baikonur Cosmodrome (Tyuratam)
Objects from the same launch · 8
- SL-24 DEB35687DebrisDecayed
- SL-24 DEB35689DebrisInactive
- DEIMOS-135681PayloadActive
- DUBAISAT-135682PayloadActive
- UK-DMC 235683PayloadActive
- NANOSAT 1B35685PayloadActive
- APRIZESAT 335686PayloadActive
- SL-24 R/B35688Rocket bodyInactive
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 20 h ago
CelesTrak SATCATcommunity
Satellite catalog data courtesy of CelesTrak.
last sync 27 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 01:01 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
- 35684
- COSPAR / international designator
- 2009-041D
- SatelliteIndex id
- sat_01M28X2SWVN8HVCRKVKG2Q7P3R
- Canonical slug
- aprizesat-4-35684
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.