TRANSIT 4B, 202
Orbit data source: Space-Track
TRANSIT 4B, 202 is a payload satellite owned by USN BuWeps (US) in LEO that was launched on Wed, 15 Nov 1961 UTC via a THOR ABLESTAR launch vehicle from the Air Force Eastern Test Range (AFETR). 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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202 intel report (Beta)
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Identifier
Orbit
Country
USRelated business
Manufacturer
APL
Mission
Spacecraft
Bus & Motor
TRANSIT 4, Unknown motor
Mass
89 kg wet, 89 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
CYL, 1.1 m
Radar Cross Section
Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 13 hours ago
TLE from 13 hours ago
0 TRANSIT 4B
1 00202U 61031A 26313.79083542 .00000071 00000-0 55922-4 0 9993
2 00202 32.4395 352.9744 0101004 241.0235 118.0229 13.63802408240889Epoch: 2026-11-09T18:58Z
TLE epoch observation values (Epoch: 2026-11-09T18:58:48.180Z)
Latitude
0.00001°
Longitude
19.31133°
Altitude
1,056.337 km
Speed
7.308 km/s
True Right ascension
23h 31m 53s
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
04:19:26
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,100.072 km
Perigee altitude
950.517 km
Semi-major axis
7,403.431 km
Eccentricity
0.0101
Inclination
32.4395°
RAAN
352.9744°
Arg. of periapsis
241.0235°
True anomaly
119.03855°
Mean anomaly
118.0229°
Eccentric anomaly
118.53133°
Mean motion
3.40717 °/min
Orbital period
105.66 mins
BSTAR
0.000055922
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Other satellites on launch #31 in the year 1961 (1961-11-15 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.TRANSIT 4B 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. |
|---|---|---|---|---|---|---|---|
| 13 mins | 2026-11-10 09:23:54.892Z | 254.496° W | 2026-11-10 09:30:54.892Z | 176.852° S | 46.072° | 2026-11-10 09:36:54.892Z | 114.732° SE |
| 10 mins | 2026-11-10 11:17:54.892Z | 250.353° W | 2026-11-10 11:21:54.892Z | 207.202° SW | 30.662° | 2026-11-10 11:27:54.892Z | 143.149° SSE |
| 5 mins | 2026-11-11 04:32:54.892Z | 165.888° S | 2026-11-11 04:34:54.892Z | 148.284° SSE | 13.578° | 2026-11-11 04:37:54.892Z | 122.643° SE |
| 10 mins | 2026-11-11 06:21:54.892Z | 212.782° SW | 2026-11-11 06:25:54.892Z | 168.866° S | 32.553° | 2026-11-11 06:31:54.892Z | 104.014° ESE |
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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