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: 16 hours ago
TLE from 16 hours ago
0 TRANSIT 4B
1 202U 61031A 25322.39600104 .00000086 00000-0 78720-4 0 9994
2 202 32.4388 338.1122 0100984 53.5768 307.4116 13.63770767192203Epoch: 2025-11-18T09:30Z
TLE epoch observation values (Epoch: 2025-11-18T09:30:14.489Z)
Latitude
-0.00003°
Longitude
137.86909°
Altitude
975.849 km
Speed
7.388 km/s
True Right ascension
22h 32m 26s
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
22:45:58
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,100.173 km
Perigee altitude
950.645 km
Semi-major axis
7,403.546 km
Eccentricity
0.0101
Inclination
32.4388°
RAAN
338.1122°
Arg. of periapsis
53.5768°
True anomaly
306.48539°
Mean anomaly
307.4116°
Eccentric anomaly
306.9492°
Mean motion
3.40709 °/min
Orbital period
105.66 mins
BSTAR
0.00007872
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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. |
|---|---|---|---|---|---|---|---|
| 8 mins | 2025-11-19 05:05:01.500Z | 207.007° SW | 2025-11-19 05:09:01.500Z | 153.313° SSE | 25.626° | 2025-11-19 05:13:01.500Z | 108.727° ESE |
| 10 mins | 2025-11-19 06:56:01.500Z | 237.872° WSW | 2025-11-19 07:00:01.500Z | 179.441° S | 34.216° | 2025-11-19 07:06:01.500Z | 108.275° ESE |
| 9 mins | 2025-11-19 08:48:01.500Z | 246.132° WSW | 2025-11-19 08:52:01.500Z | 188.679° SSW | 30.467° | 2025-11-19 08:57:01.500Z | 131.701° SE |
| 6 mins | 2025-11-19 10:41:01.500Z | 231.008° WSW | 2025-11-19 10:43:01.500Z | 209.6° SW | 17.193° | 2025-11-19 10:47:01.500Z | 170.211° 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 ascending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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