PROPCUBE 1, 40976
Orbit data source: Space-Track
PROPCUBE 1, 40976 is a payload satellite owned by USN PGS (US) in LEO that was launched on Thu, 08 Oct 2015 UTC via an ATLAS V 401 launch vehicle from the Air Force Western Test Range (AFWTR). Payload-class satellites include a variety of spacecraft equipped with specific instruments for various scientific and technological missions. These include communications satellites like Starlink; space stations such as the ISS; scientific satellites like the Hubble; Earth observation satellites from companies like Planet Labs, Umbra, and HawkEye 360; GPS; miniature CubeSats for education and research; and military/defense satellites.
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40976 intel report (Beta)
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Identifier
Orbit
Country
USRelated business
Manufacturer
Tyvak NSS
Mission
Operational Defense Technology
Bus & Motor
CUBESAT 1U, Unknown motor
Mass
1 kg wet, 1 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box, 0.1 m
Radar Cross Section
0.015 m², Medium (>0.1 m² and < 1m²)
Expand to show TLE details & historyLast TLE update: 20 hours ago
TLE from 20 hours ago
0 PROPCUBE 1
1 40976U 15058N 26080.74746232 .00003444 00000-0 32992-3 0 9999
2 40976 64.7750 206.1262 0129652 95.3456 266.2462 14.88726499103249Epoch: 2026-03-21T17:56Z
TLE epoch observation values (Epoch: 2026-03-21T17:56:20.744Z)
Latitude
-0.00008°
Longitude
117.77599°
Altitude
611.012 km
Speed
7.55 km/s
True Right ascension
13h 44m 30s
True Declination
0° 00' 00"
Sunlit
Visualization orbit readout
Latitude
Unknown
Longitude
Unknown
Altitude
Unknown
Speed
Unknown
Apparent Right ascension
Unknown
Apparent Declination
Unknown
Sunlit
Visualization observer readout
Local Sidereal Time
18:53:15
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
690.961 km
Perigee altitude
510.003 km
Semi-major axis
6,978.619 km
Eccentricity
0.01297
Inclination
64.775°
RAAN
206.1262°
Arg. of periapsis
95.3456°
True anomaly
264.76542°
Mean anomaly
266.2462°
Eccentric anomaly
265.50563°
Mean motion
3.72297 °/min
Orbital period
96.7 mins
BSTAR
0.00032992
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Other satellites on launch #58 in the year 2015 (2015-10-08 UTC)
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You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.PROPCUBE 1 Visibility forecast
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Span | Click to sort rows by Start time (UTC) header in descending order | Start Az. | Max El. time (UTC) | Max El. Az. | Max El. | End time (UTC) | End Az. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2026-03-22 18:39:23.571Z | 337.935° N | 2026-03-22 18:42:23.571Z | 50.908° ENE | 40.838° | 2026-03-22 18:46:23.571Z | 137.069° SSE |
| 4 mins | 2026-03-23 08:46:23.571Z | 145.913° SSE | 2026-03-23 08:48:23.571Z | 112.586° SE | 16.835° | 2026-03-23 08:50:23.571Z | 78.198° E |
| 5 mins | 2026-03-23 10:25:23.571Z | 249.273° W | 2026-03-23 10:27:23.571Z | 296.655° NW | 31.51° | 2026-03-23 10:30:23.571Z | 9.883° NNE |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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