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
Unknown
Radar Cross Section
Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 12 hours ago
TLE from 12 hours ago
0 TRANSIT 4B
1 202U 61031A 26138.44967654 .00000037 00000-0 19219-4 0 9996
2 202 32.4357 151.2481 0101020 348.8881 10.9514 13.63790614216937Epoch: 2026-05-18T10:47Z
TLE epoch observation values (Epoch: 2026-05-18T10:47:32.053Z)
Latitude
-0.00005°
Longitude
113.2267°
Altitude
947.338 km
Speed
7.417 km/s
True Right ascension
10h 04m 59s
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
07:27:42
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,100.127 km
Perigee altitude
950.548 km
Semi-major axis
7,403.475 km
Eccentricity
0.0101
Inclination
32.4357°
RAAN
151.2481°
Arg. of periapsis
348.8881°
True anomaly
11.17408°
Mean anomaly
10.9514°
Eccentric anomaly
11.06246°
Mean motion
3.40714 °/min
Orbital period
105.66 mins
BSTAR
0.000019219
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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. |
|---|---|---|---|---|---|---|---|
| 10 mins | 2026-05-19 04:34:40.652Z | 215.844° SW | 2026-05-19 04:39:40.652Z | 164.43° S | 25.519° | 2026-05-19 04:44:40.652Z | 107.783° ESE |
| 11 mins | 2026-05-19 06:26:40.652Z | 240.206° WSW | 2026-05-19 06:31:40.652Z | 174.055° S | 34.875° | 2026-05-19 06:37:40.652Z | 107.127° ESE |
| 11 mins | 2026-05-19 08:18:40.652Z | 251.398° W | 2026-05-19 08:23:40.652Z | 186.77° SSW | 32.334° | 2026-05-19 08:29:40.652Z | 126.048° SE |
| 8 mins | 2026-05-19 10:11:40.652Z | 240.59° WSW | 2026-05-19 10:14:40.652Z | 210.158° SW | 19.755° | 2026-05-19 10:19:40.652Z | 162.725° 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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