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
Unknown
Radar Cross Section
Medium (>0.1 m² and <1 m²)
Expand to show TLE details & historyLast TLE update: 13 hours ago
TLE from 13 hours ago
0 OPS 4078 (DMSP 4B F2)
1 03510U 68092A 26092.28540158 .00000236 00000-0 11173-3 0 9993
2 03510 98.5600 216.2521 0029664 188.0956 171.9750 14.28229136986418Epoch: 2026-04-02T06:50Z
TLE epoch observation values (Epoch: 2026-04-02T06:50:58.696Z)
Latitude
-0.00009°
Longitude
-77.12853°
Altitude
821.67 km
Speed
7.431 km/s
True Right ascension
14h 25m 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
01:16:19
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
816.074 km
Perigee altitude
773.519 km
Semi-major axis
7,172.934 km
Eccentricity
0.00297
Inclination
98.56°
RAAN
216.2521°
Arg. of periapsis
188.0956°
True anomaly
172.02228°
Mean anomaly
171.975°
Eccentric anomaly
171.99866°
Mean motion
3.57271 °/min
Orbital period
100.76 mins
BSTAR
0.00011173
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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. |
|---|---|---|---|---|---|---|---|
| 9 mins | 2026-04-02 20:53:09.982Z | 21.123° NNE | 2026-04-02 20:57:09.982Z | 87.491° E | 42.319° | 2026-04-02 21:02:09.982Z | 183.919° SSW |
| 4 mins | 2026-04-02 22:35:09.982Z | 315.067° NNW | 2026-04-02 22:36:09.982Z | 301.893° NW | 14.95° | 2026-04-02 22:39:09.982Z | 265.069° W |
| 8 mins | 2026-04-03 08:12:09.982Z | 166.877° S | 2026-04-03 08:15:09.982Z | 177.482° S | 44.319° | 2026-04-03 08:20:09.982Z | 345.919° N |
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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