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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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Identifier
3510, 1968-092A
Orbit
SSO
Last TLE update
11 hours ago
Origin
Manufacturer
RCA/East Windsor
Mission
Non-operational Defense Weather
Bus & Motor
DMSP BLOCK 4B, Unknown motor
Mass
79 kg wet, 79 kg dry
Launch date (UTC)
1968-10-23 (57 years ago)
Launch vehicle
THOR BURNER 2
Launch site
Air Force Western Test Range (AFWTR)
Object type
Payload
Rocket body
Debris
Shape & HBR
Cone, 0.8 m
Radar Cross Section
0.985 m², Medium (>0.1 m² and < 1m²)

Expand to show TLE details & history

TLE from 11 hours ago
0 OPS 4078 (DMSP 4B F2)
1 03510U 68092A   25191.61754546  .00000061  00000-0  41576-4 0  9994
2 03510  98.5333 316.1404 0028700 248.5796 111.2323 14.28094648948492
Epoch: 2025-07-10T14:49Z
TLE epoch observation values (Epoch: 2025-07-10T14:49:15.927Z)
Latitude
-0.00006°
Longitude
165.0428°
Altitude
808.549 km
Speed
7.445 km/s
True Right ascension
21h 04m 33s
True Declination
0° 00' 00"
Sunlit
Object was in full shadow at epoch
Visualization orbit readout
Latitude
-67.99347°
Longitude
-36.17032°
Altitude
803.12 km
Speed
7.462 km/s
Apparent Right ascension
04h 06m 03s
Apparent Declination
-60° 43' 33"
Sunlit
Object is in daylight
Visualization observer readout
Local Sidereal Time
14:21:04
Azimuth
209.155° SW
Elevation
-63.65°
Doppler factor
1
Orbital elements
Apogee altitude
815.834 km
Perigee altitude
774.658 km
Semi-major axis
7,173.383 km
Eccentricity
0.00287
Inclination
98.5333°
RAAN
316.1404°
Arg. of periapsis
248.5796°
True anomaly
Unknown
Mean anomaly
111.2323°
Eccentric anomaly
Unknown
Mean motion
3.57238 °/min
Orbital period
100.77 mins
BSTAR
0.000041576
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Other satellites on launch #92 in the year 1968 (1968-10-23 UTC)

OPS 4078 (DMSP 4B F2) Visibility forecast

Observer location: undefined°, undefined°

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 mins2025-07-11 07:45:34.542Z140.773° SSE2025-07-11 07:49:34.542Z85.87° E35.7°2025-07-11 07:54:34.542Z0.545° NNE
6 mins2025-07-11 09:27:34.542Z234.21° WSW2025-07-11 09:29:34.542Z262.313° W19.709°2025-07-11 09:33:34.542Z313.291° NW
5 mins2025-07-11 20:02:34.542Z69.125° E2025-07-11 20:04:34.542Z97.257° ESE17.373°2025-07-11 20:07:34.542Z133.592° SE
8 mins2025-07-11 21:40:34.542Z357.8° N2025-07-11 21:44:34.542Z271.351° WNW37.937°2025-07-11 21:48:34.542Z215.122° SW
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