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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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Identifier
202, 1961-031A
Orbit
LEO
Last TLE update
12 hours ago
Origin
Manufacturer
APL
Mission
Defense Navigation
Bus & Motor
TRANSIT 4, Unknown motor
Mass
89 kg wet, 89 kg dry
Launch date (UTC)
1961-11-15 (63 years ago)
Launch vehicle
THOR ABLESTAR
Launch site
Air Force Eastern Test Range (AFETR)
Object type
Payload
Rocket body
Debris
Shape & HBR
Cyl, 1.09 m
Radar Cross Section
1.143 m², Large (>1 m²)

Expand to show TLE details & history

TLE from 12 hours ago
0 TRANSIT 4B
1   202U 61031A   25115.20114664  .00000101  00000-0  93700-4 0  9998
2   202  32.4388 295.8679 0101540 279.7609  79.1557 13.63745627163975
Epoch: 2025-04-25T04:49Z
Definitive object data (Epoch: 2025-04-25T04:49:39.069Z)
Latitude
-0.00007°
Longitude
9.99338°
Altitude
1,007.454 km
Speed
7.357 km/s
True Right ascension
19h 43m 28s
True Declination
0° 00' 00"
Sunlit
Object was in daylight at TLE epoch
Visualization TLE readout
Latitude
-31.25203°
Longitude
-100.68917°
Altitude
963.787 km
Speed
7.404 km/s
Apparent Right ascension
12h 08m 22s
Apparent Declination
-35° 09' 40"
Sunlit
Object is in full shadow
Visualization observer readout
Local Sidereal Time
23:52:31
Azimuth
325.316° NNW
Elevation
-84.302°
Doppler factor
1
Orbital elements
Apogee altitude
1,100.676 km
Perigee altitude
950.323 km
Semi-major axis
7,403.637 km
Eccentricity
0.010154
Inclination
32.4388°
RAAN
295.8679°
Arg. of periapsis
279.7609°
True anomaly
80.30114°
Mean anomaly
79.1557°
Eccentric anomaly
79.72816°
Mean motion
3.40703 °/min
BSTAR
0.0000937
Orbital period
105.66 mins
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Other satellites on launch #31 in the year 1961 (1961-11-15 UTC)

TRANSIT 4B Visibility forecast

Observer location: undefined°, undefined°

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.
13 mins2025-04-25 17:25:13.274Z242.187° WSW2025-04-25 17:31:13.274Z182.468° SSW34.982°2025-04-25 17:38:13.274Z104.195° ESE
12 mins2025-04-25 19:18:13.274Z253.057° W2025-04-25 19:23:13.274Z196.854° SSW34.01°2025-04-25 19:30:13.274Z121.493° SE
9 mins2025-04-25 21:11:13.274Z246.161° WSW2025-04-25 21:15:13.274Z205.015° SW22.395°2025-04-25 21:20:13.274Z156.919° SSE
7 mins2025-04-26 14:25:13.274Z178.674° S2025-04-26 14:28:13.274Z147.604° SSE18.047°2025-04-26 14:32:13.274Z111.582° ESE
11 mins2025-04-26 16:14:13.274Z226.604° WSW2025-04-26 16:19:13.274Z169.066° S31.932°2025-04-26 16:25:13.274Z103.354° ESE
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