IPEX, 39471
Orbit data source: Space-Track
IPEX, 39471 is an American payload satellite in LEO that was launched on Fri, 06 Dec 2013 UTC via an ATLAS V 501 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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39471 intel report (Beta)
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Identifier
Orbit
Country
USRelated business
Manufacturer
Cal Poly
Mission
Non-operational Civil 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, Small (<0.1 m²)
Expand to show TLE details & historyLast TLE update: 7 hours ago
TLE from 7 hours ago
0 IPEX
1 39471U 13072K 26095.28951823 .00012128 00000-0 62109-3 0 9992
2 39471 120.4637 21.7530 0157218 282.4991 75.8530 15.07067287104248Epoch: 2026-04-05T06:56Z
TLE epoch observation values (Epoch: 2026-04-05T06:56:54.375Z)
Latitude
0.00006°
Longitude
83.92933°
Altitude
521.723 km
Speed
7.617 km/s
True Right ascension
01h 27m 00s
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
19:27:13
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
653.279 km
Perigee altitude
435.608 km
Semi-major axis
6,922.58 km
Eccentricity
0.01572
Inclination
120.4637°
RAAN
21.753°
Arg. of periapsis
282.4991°
True anomaly
77.6081°
Mean anomaly
75.853°
Eccentric anomaly
76.72974°
Mean motion
3.76826 °/min
Orbital period
95.53 mins
BSTAR
0.00062109
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Other satellites on launch #72 in the year 2013 (2013-12-06 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.IPEX 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. |
|---|---|---|---|---|---|---|---|
| 5 mins | 2026-04-05 16:43:13.481Z | 80.505° E | 2026-04-05 16:45:13.481Z | 31.139° NE | 27.888° | 2026-04-05 16:48:13.481Z | 338.435° N |
| 5 mins | 2026-04-05 18:15:13.481Z | 177.465° S | 2026-04-05 18:17:13.481Z | 233.4° WSW | 32.983° | 2026-04-05 18:20:13.481Z | 297.51° NW |
| 6 mins | 2026-04-06 09:00:13.481Z | 72.924° E | 2026-04-06 09:02:13.481Z | 119.711° SE | 31.821° | 2026-04-06 09:06:13.481Z | 195.422° SSW |
| 6 mins | 2026-04-06 10:32:13.481Z | 14.837° NNE | 2026-04-06 10:34:13.481Z | 334.321° NNW | 29.676° | 2026-04-06 10:38:13.481Z | 258.399° W |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
Click to sort rows by RSO header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Type header in ascending order | Click to sort rows by Inclination Δ header in ascending order | Click to sort rows by RAAN Δ header in ascending order | Click to sort rows by Coplanar Angle header in ascending order | Click to sort rows by SMA Δ header in ascending order | Click to sort rows by Orbital period header in ascending order | Click to sort rows by <5km Md TCA header in descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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