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: 7 hours ago
TLE from 7 hours ago
0 DELFI-N3XT
1 39428U 13066N 26037.72510894 .00012237 00000-0 11141-2 0 9991
2 39428 97.8351 318.3452 0075461 280.9365 78.3371 14.93136935655147Epoch: 2026-02-06T17:24Z
TLE epoch observation values (Epoch: 2026-02-06T17:24:09.412Z)
Latitude
-0.00001°
Longitude
-79.55288°
Altitude
580.955 km
Speed
7.576 km/s
True Right ascension
21h 13m 22s
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
02:42:11
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
637.728 km
Perigee altitude
532.636 km
Semi-major axis
6,963.319 km
Eccentricity
0.00755
Inclination
97.8351°
RAAN
318.3452°
Arg. of periapsis
280.9365°
True anomaly
79.18555°
Mean anomaly
78.3371°
Eccentric anomaly
78.76117°
Mean motion
3.73524 °/min
Orbital period
96.38 mins
BSTAR
0.0011141
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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. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2026-02-07 06:51:03.593Z | 37.635° NE | 2026-02-07 06:54:03.593Z | 90.444° ESE | 28.148° | 2026-02-07 06:58:03.593Z | 160.521° S |
| 4 mins | 2026-02-07 08:28:03.593Z | 320.175° NNW | 2026-02-07 08:29:03.593Z | 302.054° NW | 20.125° | 2026-02-07 08:32:03.593Z | 250.342° W |
| 4 mins | 2026-02-07 17:42:03.593Z | 92.778° ESE | 2026-02-07 17:43:03.593Z | 73.99° E | 19.944° | 2026-02-07 17:46:03.593Z | 23.718° NE |
| 6 mins | 2026-02-07 19:16:03.593Z | 209.729° SW | 2026-02-07 19:19:03.593Z | 275.453° WNW | 27.493° | 2026-02-07 19:22:03.593Z | 324.074° NNW |
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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