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: 14 hours ago
TLE from 14 hours ago
0 TRANSIT 4B
1 202U 61031A 26318.32989617 .00000063 00000-0 47220-4 0 9998
2 202 32.4393 330.2395 0101053 275.4156 83.4945 13.63802689241506Epoch: 2026-11-14T07:55Z
TLE epoch observation values (Epoch: 2026-11-14T07:55:03.029Z)
Latitude
0.00004°
Longitude
158.0407°
Altitude
1,012.921 km
Speed
7.351 km/s
True Right ascension
22h 00m 57s
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
18:54:12
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,100.107 km
Perigee altitude
950.48 km
Semi-major axis
7,403.43 km
Eccentricity
0.01011
Inclination
32.4393°
RAAN
330.2395°
Arg. of periapsis
275.4156°
True anomaly
84.6466°
Mean anomaly
83.4945°
Eccentric anomaly
84.07039°
Mean motion
3.40717 °/min
Orbital period
105.66 mins
BSTAR
0.00004722
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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 | 2026-11-15 03:25:34.448Z | 184.999° SSW | 2026-11-15 03:29:34.448Z | 147.292° SSE | 17.708° | 2026-11-15 03:33:34.448Z | 112.148° ESE |
| 11 mins | 2026-11-15 05:15:34.448Z | 224.399° SW | 2026-11-15 05:20:34.448Z | 168.176° S | 37.426° | 2026-11-15 05:26:34.448Z | 102.976° ESE |
| 11 mins | 2026-11-15 07:07:34.448Z | 246.423° WSW | 2026-11-15 07:12:34.448Z | 182.655° SSW | 47.27° | 2026-11-15 07:18:34.448Z | 112.649° SE |
| 11 mins | 2026-11-15 08:59:34.448Z | 252.929° W | 2026-11-15 09:04:34.448Z | 195.919° SSW | 35.03° | 2026-11-15 09:10:34.448Z | 135.737° SSE |
| 6 mins | 2026-11-15 10:53:34.448Z | 232.965° WSW | 2026-11-15 10:55:34.448Z | 214.775° SW | 15.465° | 2026-11-15 10:59:34.448Z | 179.435° S |
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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