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: 21 hours ago
TLE from 21 hours ago
0 PROPCUBE 1
1 40976U 15058N 26260.72038020 .00001252 00000-0 12505-3 0 9999
2 40976 64.7752 8.3496 0138339 26.1544 334.6468 14.89615175130047Epoch: 2026-09-17T17:17Z
TLE epoch observation values (Epoch: 2026-09-17T17:17:20.849Z)
Latitude
-0.00001°
Longitude
112.35916°
Altitude
514.157 km
Speed
7.654 km/s
True Right ascension
00h 33m 23s
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
07:35:27
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
694.208 km
Perigee altitude
501.202 km
Semi-major axis
6,975.842 km
Eccentricity
0.01383
Inclination
64.7752°
RAAN
8.3496°
Arg. of periapsis
26.1544°
True anomaly
333.95725°
Mean anomaly
334.6468°
Eccentric anomaly
334.30311°
Mean motion
3.72519 °/min
Orbital period
96.64 mins
BSTAR
0.00012505
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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 | 2026-09-18 18:00:47.426Z | 323.99° NNW | 2026-09-18 18:02:47.426Z | 302.243° NW | 70.738° | 2026-09-18 18:07:47.426Z | 153.242° SSE |
| 4 mins | 2026-09-19 08:06:47.426Z | 150.324° SSE | 2026-09-19 08:07:47.426Z | 127.106° SE | 26.046° | 2026-09-19 08:10:47.426Z | 62.275° ENE |
| 5 mins | 2026-09-19 09:45:47.426Z | 271.42° WNW | 2026-09-19 09:47:47.426Z | 315.131° NNW | 23.791° | 2026-09-19 09:50:47.426Z | 6.226° 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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