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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Edit Public Description
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
Unknown
Radar Cross Section
Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 5 hours ago
TLE from 5 hours ago
0 TRANSIT 4B
1 202U 61031A 25353.73062479 .00000048 00000-0 29685-4 0 9997
2 202 32.4357 181.1657 0101505 291.5322 67.4505 13.63774505196481Epoch: 2025-12-19T17:32Z
TLE epoch observation values (Epoch: 2025-12-19T17:32:05.981Z)
Latitude
-0.00004°
Longitude
-170.42687°
Altitude
992.601 km
Speed
7.371 km/s
True Right ascension
12h 04m 39s
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
21:29:31
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,100.545 km
Perigee altitude
950.246 km
Semi-major axis
7,403.533 km
Eccentricity
0.01015
Inclination
32.4357°
RAAN
181.1657°
Arg. of periapsis
291.5322°
True anomaly
68.52992°
Mean anomaly
67.4505°
Eccentric anomaly
67.98969°
Mean motion
3.4071 °/min
Orbital period
105.66 mins
BSTAR
0.000029685
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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. |
|---|---|---|---|---|---|---|---|
| 5 mins | 2025-12-20 14:48:54.379Z | 164.941° S | 2025-12-20 14:50:54.379Z | 146.226° SSE | 13.595° | 2025-12-20 14:53:54.379Z | 120.056° SE |
| 10 mins | 2025-12-20 16:37:54.379Z | 213° SW | 2025-12-20 16:41:54.379Z | 164.658° S | 28.807° | 2025-12-20 16:47:54.379Z | 102.531° ESE |
| 11 mins | 2025-12-20 18:28:54.379Z | 242.857° WSW | 2025-12-20 18:33:54.379Z | 177.254° S | 35.969° | 2025-12-20 18:39:54.379Z | 109.66° ESE |
| 11 mins | 2025-12-20 20:20:54.379Z | 252.082° W | 2025-12-20 20:25:54.379Z | 191.674° SSW | 31.588° | 2025-12-20 20:31:54.379Z | 130.765° SE |
| 8 mins | 2025-12-20 22:13:54.379Z | 240.956° WSW | 2025-12-20 22:16:54.379Z | 212.995° SW | 17.739° | 2025-12-20 22:21:54.379Z | 168.043° S |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
Click to sort rows by RSO header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Type header in ascending order | Click to sort rows by Inclination Δ header in ascending order | Click to sort rows by RAAN Δ header in ascending order | Click to sort rows by Coplanar Angle header in ascending order | Click to sort rows by SMA Δ header in ascending order | Click to sort rows by Orbital period header in ascending order | Click to sort rows by <5km Md TCA header in descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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