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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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Iframe URL

https://www.satcat.com/sats-embedded/40976?theme=dark&initialShowStats=false

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Identifier

40976, 2015-058N

Orbit

LEO

Country

Related business

United States Navy (US)

Manufacturer

Tyvak NSS

Mission

Operational Defense Technology

Bus & Motor

CUBESAT 1U, Unknown motor

Mass

1 kg wet, 1 kg dry

Launch date (UTC)

2015-10-08 (10 years ago)

Launch vehicle

ATLAS V 401

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Box, 0.1 m

Radar Cross Section

0.015 m², Medium (>0.1 m² and < 1m²)

Expand to show TLE details & history
Last TLE update: 8 hours ago

TLE from 8 hours ago

0 PROPCUBE 1
1 40976U 15058N   26035.26417483  .00003175  00000-0  30641-3 0  9999
2 40976  64.7768 346.9432 0131928 113.2589 248.2475 14.88389612 96478

Epoch: 2026-02-04T06:20Z

TLE epoch observation values (Epoch: 2026-02-04T06:20:24.705Z)

Latitude

0°

Longitude

117.40701°

Altitude

640.149 km

Speed

7.52 km/s

True Right ascension

23h 07m 46s

True Declination

0° 00' 00"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

Unknown

Longitude

Unknown

Altitude

Unknown

Speed

Unknown

Apparent Right ascension

Unknown

Apparent Declination

Unknown

Sunlit

N/A

Visualization observer readout

Local Sidereal Time

16:33:02

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

693.616 km

Perigee altitude

509.454 km

Semi-major axis

6,979.672 km

Eccentricity

0.01319

Inclination

64.7768°

RAAN

346.9432°

Arg. of periapsis

113.2589°

True anomaly

246.85203°

Mean anomaly

248.2475°

Eccentric anomaly

247.5489°

Mean motion

3.72212 °/min

Orbital period

96.72 mins

BSTAR

0.00030641

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Other satellites on launch #58 in the year 2015 (2015-10-08 UTC)

ATLAS 5 CENTAUR R/B, 40978

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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	2026-02-04 22:36:25.960Z	217.205° SW	2026-02-04 22:40:25.960Z	324.354° NNW	43.736°	2026-02-04 22:43:25.960Z	26.718° NE
6 mins	2026-02-05 07:04:25.960Z	338.711° N	2026-02-05 07:07:25.960Z	89.751° E	40.324°	2026-02-05 07:10:25.960Z	137.131° SSE

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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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Check out PROPCUBE 1, 40976 on other resources

View PROPCUBE 1, 40976 on NASA - NSSDCA Website

View PROPCUBE 1, 40976 on Heavens-Above

View PROPCUBE 1, 40976 on Keep Track

View PROPCUBE 1, 40976 on Celestrak

View PROPCUBE 1, 40976 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.

PROPCUBE 1, 40976

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 8 hours ago

TLE from 8 hours ago

TLE epoch observation values (Epoch: 2026-02-04T06:20:24.705Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #58 in the year 2015 (2015-10-08 UTC)

PROPCUBE 1 Visibility forecast

Co-orbital & Co-planar RSOs

Check out PROPCUBE 1, 40976 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 8 hours ago