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, 0.6 m
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 00202U 61031A 26208.58648356 .00000030 00000-0 88013-5 0 9996
2 00202 32.4360 159.9393 0101074 161.8560 198.5704 13.63795751226510Epoch: 2026-07-27T14:04Z
TLE epoch observation values (Epoch: 2026-07-27T14:04:32.179Z)
Latitude
-0.00003°
Longitude
3.53725°
Altitude
1,091.63 km
Speed
7.273 km/s
True Right ascension
10h 39m 45s
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
15:25:43
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,100.149 km
Perigee altitude
950.489 km
Semi-major axis
7,403.456 km
Eccentricity
0.01011
Inclination
32.436°
RAAN
159.9393°
Arg. of periapsis
161.856°
True anomaly
198.20591°
Mean anomaly
198.5704°
Eccentric anomaly
198.38772°
Mean motion
3.40715 °/min
Orbital period
105.66 mins
BSTAR
0.0000088013
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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. |
|---|---|---|---|---|---|---|---|
| 12 mins | 2026-07-28 02:42:09.879Z | 245.73° WSW | 2026-07-28 02:48:09.879Z | 174.177° S | 34.939° | 2026-07-28 02:54:09.879Z | 108.02° ESE |
| 10 mins | 2026-07-28 04:35:09.879Z | 251.307° W | 2026-07-28 04:40:09.879Z | 185.678° SSW | 30.294° | 2026-07-28 04:45:09.879Z | 131.398° SE |
| 6 mins | 2026-07-28 06:28:09.879Z | 238.444° WSW | 2026-07-28 06:31:09.879Z | 207.618° SW | 16.369° | 2026-07-28 06:34:09.879Z | 176.806° S |
| 9 mins | 2026-07-28 23:40:09.879Z | 197.193° SSW | 2026-07-28 23:44:09.879Z | 155.728° SSE | 21.764° | 2026-07-28 23:49:09.879Z | 107.269° ESE |
| 10 mins | 2026-07-29 01:31:09.879Z | 230.686° WSW | 2026-07-29 01:36:09.879Z | 162.19° S | 33.069° | 2026-07-29 01:41:09.879Z | 106.269° 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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