TRANSIT 4A, 116
Orbit data source: Space-Track
TRANSIT 4A, 116 is a payload satellite owned by USN BuWeps (US) in LEO that was launched on Thu, 29 Jun 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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116 intel report (Beta)
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Identifier
Orbit
Country
USRelated business
Manufacturer
APL
Mission
Spacecraft
Bus & Motor
TRANSIT 4, Unknown motor
Mass
78 kg wet, 78 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: 8 hours ago
TLE from 8 hours ago
0 TRANSIT 4A
1 00116U 61015A 26305.16742768 -.00000007 00000-0 53259-4 0 9994
2 00116 66.8087 275.6339 0075442 182.1693 177.9071 13.92350152315778Epoch: 2026-11-01T04:01Z
TLE epoch observation values (Epoch: 2026-11-01T04:01:05.751Z)
Latitude
-0.00002°
Longitude
174.89724°
Altitude
977.516 km
Speed
7.336 km/s
True Right ascension
18h 22m 32s
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
08:11:08
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
973.847 km
Perigee altitude
863.748 km
Semi-major axis
7,296.935 km
Eccentricity
0.00754
Inclination
66.8087°
RAAN
275.6339°
Arg. of periapsis
182.1693°
True anomaly
177.93838°
Mean anomaly
177.9071°
Eccentric anomaly
177.92277°
Mean motion
3.48203 °/min
Orbital period
103.39 mins
BSTAR
0.000053259
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Other satellites on launch #15 in the year 1961 (1961-06-29 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 4A 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. |
|---|---|---|---|---|---|---|---|
| 11 mins | 2026-11-01 23:05:22.239Z | 179.01° S | 2026-11-01 23:10:22.239Z | 120.685° SE | 43.617° | 2026-11-01 23:16:22.239Z | 42.454° NE |
| 9 mins | 2026-11-02 00:53:22.239Z | 256.375° W | 2026-11-02 00:57:22.239Z | 313.095° NW | 33.718° | 2026-11-02 01:02:22.239Z | 11.195° NNE |
| 9 mins | 2026-11-02 08:09:22.239Z | 348.477° N | 2026-11-02 08:13:22.239Z | 40.652° NE | 40.312° | 2026-11-02 08:18:22.239Z | 118.931° SE |
| 8 mins | 2026-11-02 09:56:22.239Z | 301.952° NW | 2026-11-02 10:00:22.239Z | 244.079° WSW | 30.375° | 2026-11-02 10:04:22.239Z | 195.274° SSW |
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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