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: 6 hours ago
TLE from 6 hours ago
0 TRANSIT 4B
1 00202U 61031A 26121.31802207 .00000109 00000-0 10289-3 0 9993
2 00202 32.4373 237.0604 0101073 219.0528 140.2761 13.63789418214591Epoch: 2026-05-01T07:37Z
TLE epoch observation values (Epoch: 2026-05-01T07:37:57.106Z)
Latitude
-0.00003°
Longitude
-96.67959°
Altitude
1,078.511 km
Speed
7.286 km/s
True Right ascension
15h 48m 14s
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
20:52:02
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,100.171 km
Perigee altitude
950.513 km
Semi-major axis
7,403.479 km
Eccentricity
0.01011
Inclination
32.4373°
RAAN
237.0604°
Arg. of periapsis
219.0528°
True anomaly
141.00915°
Mean anomaly
140.2761°
Eccentric anomaly
140.64334°
Mean motion
3.40714 °/min
Orbital period
105.66 mins
BSTAR
0.00010289
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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 | 2026-05-01 13:14:35.047Z | 229.277° WSW | 2026-05-01 13:18:35.047Z | 167.089° S | 34.859° | 2026-05-01 13:24:35.047Z | 104.88° ESE |
| 10 mins | 2026-05-01 15:05:35.047Z | 249.7° W | 2026-05-01 15:10:35.047Z | 181.271° SSW | 33.568° | 2026-05-01 15:15:35.047Z | 125.353° SE |
| 9 mins | 2026-05-01 16:57:35.047Z | 248.066° W | 2026-05-01 17:01:35.047Z | 207.353° SW | 21.598° | 2026-05-01 17:06:35.047Z | 157.005° SSE |
| 7 mins | 2026-05-02 10:11:35.047Z | 180.219° SSW | 2026-05-02 10:14:35.047Z | 150.292° SSE | 18.44° | 2026-05-02 10:18:35.047Z | 113.62° SE |
| 11 mins | 2026-05-02 12:00:35.047Z | 227.337° WSW | 2026-05-02 12:05:35.047Z | 174.259° S | 31.754° | 2026-05-02 12:11:35.047Z | 104.485° ESE |
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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