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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
10 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 10 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
-81.37036°
Longitude
-115.01043°
Altitude
807.539 km
Speed
7.459 km/s
Apparent Right ascension
01h 03m 34s
Apparent Declination
-62° 07' 30"
Sunlit
Object is in daylight
Visualization observer readout
Local Sidereal Time
12:46:05
Azimuth
185.372° SSW
Elevation
-67.634°
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 07:45:50.733Z139.593° SSE2025-07-11 07:49:50.733Z76.613° E36.124°2025-07-11 07:54:50.733Z359.558° N
5 mins2025-07-11 09:27:50.733Z237.452° WSW2025-07-11 09:29:50.733Z266.578° W19.78°2025-07-11 09:32:50.733Z306.769° NW
5 mins2025-07-11 20:01:50.733Z60.526° ENE2025-07-11 20:03:50.733Z86.553° E17.349°2025-07-11 20:06:50.733Z126.509° SE
8 mins2025-07-11 21:40:50.733Z356.337° N2025-07-11 21:43:50.733Z302.2° NW38.111°2025-07-11 21:48:50.733Z214.214° SW
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