DELFI-N3XT, 39428
Orbit data source: Space-Track
DELFI-N3XT, 39428 is a payload satellite owned by TU Delft (NL) in SSO that was launched on Thu, 21 Nov 2013 UTC via a DNEPR launch vehicle from the Orenburg, Russia (OREN). 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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39428 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
Unknown / NETHRelated business
Manufacturer
TU Delft
Mission
Non-operational Amateur Technology
Bus & Motor
CUBESAT 3U, Unknown motor
Mass
3.5 kg wet, 3.5 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Box + 4 Pan, 0.1 m
Radar Cross Section
0.075 m², Medium (>0.1 m² and < 1m²)
Expand to show TLE details & historyLast TLE update: 11 hours ago
TLE from 11 hours ago
0 DELFI-N3XT
1 39428U 13066N 25300.51194191 .00009727 00000-0 93710-3 0 9991
2 39428 97.8297 216.7325 0078738 259.0356 100.1997 14.90804260639907Epoch: 2025-10-27T12:17Z
TLE epoch observation values (Epoch: 2025-10-27T12:17:11.781Z)
Latitude
0.00003°
Longitude
-3.67932°
Altitude
608.608 km
Speed
7.549 km/s
True Right ascension
14h 26m 55s
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
18:16:11
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
647.334 km
Perigee altitude
537.564 km
Semi-major axis
6,970.586 km
Eccentricity
0.00787
Inclination
97.8297°
RAAN
216.7325°
Arg. of periapsis
259.0356°
True anomaly
101.08613°
Mean anomaly
100.1997°
Eccentric anomaly
100.64307°
Mean motion
3.7294 °/min
Orbital period
96.53 mins
BSTAR
0.0009371
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Other satellites on launch #66 in the year 2013 (2013-11-21 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.DELFI-N3XT 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. |
|---|---|---|---|---|---|---|---|
| 6 mins | 2025-10-28 06:35:28.762Z | 43.171° NE | 2025-10-28 06:38:28.762Z | 90.504° ESE | 21.999° | 2025-10-28 06:41:28.762Z | 143.091° SSE |
| 5 mins | 2025-10-28 08:12:28.762Z | 328.813° NNW | 2025-10-28 08:14:28.762Z | 284.525° WNW | 25.225° | 2025-10-28 08:17:28.762Z | 234.94° WSW |
| 4 mins | 2025-10-28 17:27:28.762Z | 89.521° E | 2025-10-28 17:28:28.762Z | 73.721° E | 16.453° | 2025-10-28 17:31:28.762Z | 28.445° NE |
| 6 mins | 2025-10-28 19:01:28.762Z | 198.036° SSW | 2025-10-28 19:04:28.762Z | 272.648° WNW | 34.318° | 2025-10-28 19:07:28.762Z | 328.763° NNW |
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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