OPS 4078 (DMSP 4B F2), 3510
Orbit data source: Space-Track
OPS 4078 (DMSP 4B F2), 3510 is a payload satellite owned by SAMSO (US) in SSO that was launched on Wed, 23 Oct 1968 UTC via a THOR BURNER 2 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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3510 intel report (Beta)
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Identifier
Orbit
Country
USRelated business
Manufacturer
RCA/East Windsor
Mission
Non-operational spacecraft
Bus & Motor
DMSP BLOCK 4B, Unknown motor
Mass
79 kg wet, 79 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
OCT CYL, 1.1 m
Radar Cross Section
Medium (>0.1 m² and <1 m²)
Expand to show TLE details & historyLast TLE update: 14 hours ago
TLE from 14 hours ago
0 OPS 4078 (DMSP 4B F2)
1 3510U 68092A 26272.18786031 .00000054 00000-0 38992-4 0 9991
2 3510 98.5852 32.9364 0030134 24.9653 335.2978 14.28275687 12050Epoch: 2026-09-29T04:30Z
TLE epoch observation values (Epoch: 2026-09-29T04:30:31.130Z)
Latitude
-0.00008°
Longitude
-42.64976°
Altitude
780.793 km
Speed
7.474 km/s
True Right ascension
02h 11m 44s
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
12:32:19
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
816.256 km
Perigee altitude
773.027 km
Semi-major axis
7,172.779 km
Eccentricity
0.00301
Inclination
98.5852°
RAAN
32.9364°
Arg. of periapsis
24.9653°
True anomaly
335.153°
Mean anomaly
335.2978°
Eccentric anomaly
335.22545°
Mean motion
3.57283 °/min
Orbital period
100.76 mins
BSTAR
0.000038992
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Other satellites on launch #92 in the year 1968 (1968-10-23 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.OPS 4078 (DMSP 4B F2) 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. |
|---|---|---|---|---|---|---|---|
| 8 mins | 2026-09-29 20:13:35.636Z | 37.251° NE | 2026-09-29 20:17:35.636Z | 90.081° ESE | 29.899° | 2026-09-29 20:21:35.636Z | 150.909° SSE |
| 7 mins | 2026-09-29 21:54:35.636Z | 341.285° N | 2026-09-29 21:57:35.636Z | 288.936° WNW | 32.947° | 2026-09-29 22:01:35.636Z | 232.812° WSW |
| 8 mins | 2026-09-30 07:32:35.636Z | 134.387° SE | 2026-09-30 07:36:35.636Z | 61.874° ENE | 41.68° | 2026-09-30 07:40:35.636Z | 3.246° NNE |
| 6 mins | 2026-09-30 09:13:35.636Z | 228.835° WSW | 2026-09-30 09:16:35.636Z | 274.154° WNW | 21.691° | 2026-09-30 09:19:35.636Z | 312.662° NW |
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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