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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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Iframe URL

https://www.satcat.com/sats-embedded/3510?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

3510, 1968-092A

Orbit

SSO

Last TLE update

9 hours ago

Origin

USAF Space and Missile Systems Organization (US)

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, 0.4 m

Radar Cross Section

0.985 m², Medium (>0.1 m² and < 1m²)

Expand to show TLE details & history

TLE from 9 hours ago

0 OPS 4078 (DMSP 4B F2)
1 03510U 68092A   25199.60477618  .00000094  00000-0  55052-4 0  9993
2 03510  98.5340 323.9461 0029002 224.3584 135.5274 14.28096795949638

Epoch: 2025-07-18T14:30Z

TLE epoch observation values (Epoch: 2025-07-18T14:30:52.661Z)

Latitude

-0.00003°

Longitude

169.57284°

Altitude

815.915 km

Speed

7.438 km/s

True Right ascension

21h 35m 47s

True Declination

0° 00' 00"

Sunlit

Object was in full shadow at epoch

Visualization orbit readout

Latitude

26.24501°

Longitude

165.69987°

Altitude

821.225 km

Speed

7.434 km/s

Apparent Right ascension

22h 24m 36s

Apparent Declination

-4° 48' 00"

Sunlit

Object is in full shadow

Visualization observer readout

Local Sidereal Time

11:50:18

Azimuth

34.43° NE

Elevation

-49.922°

Doppler factor

Orbital elements

Apogee altitude

816.043 km

Perigee altitude

774.435 km

Semi-major axis

7,173.376 km

Eccentricity

0.0029

Inclination

98.534°

RAAN

323.9461°

Arg. of periapsis

224.3584°

True anomaly

135.75962°

Mean anomaly

135.5274°

Eccentric anomaly

135.64357°

Mean motion

3.57238 °/min

Orbital period

100.77 mins

BSTAR

0.000055052

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Other satellites on launch #92 in the year 1968 (1968-10-23 UTC)

THOR BURNER 2 R/B, 3522

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.
8 mins	2025-07-19 07:27:46.328Z	127.175° SE	2025-07-19 07:31:46.328Z	72.53° E	28.39°	2025-07-19 07:35:46.328Z	11.356° NNE
7 mins	2025-07-19 09:08:46.328Z	217.131° SW	2025-07-19 09:11:46.328Z	268.351° W	26.995°	2025-07-19 09:15:46.328Z	322.468° NNW
8 mins	2025-07-19 21:22:46.328Z	7.937° NNE	2025-07-19 21:25:46.328Z	319.648° NNW	43.952°	2025-07-19 21:30:46.328Z	200.69° SSW

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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Check out OPS 4078 (DMSP 4B F2), 3510 on other resources

View OPS 4078 (DMSP 4B F2), 3510 on NASA - NSSDCA Website

View OPS 4078 (DMSP 4B F2), 3510 on Heavens-Above

View OPS 4078 (DMSP 4B F2), 3510 on Keep Track

View OPS 4078 (DMSP 4B F2), 3510 on Celestrak

View OPS 4078 (DMSP 4B F2), 3510 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.