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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Edit Public Description
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
Unknown
Radar Cross Section
Medium (>0.1 m² and <1 m²)
Expand to show TLE details & historyLast TLE update: 10 hours ago
TLE from 10 hours ago
0 TRANSIT 4A
1 00116U 61015A 25357.26596071 .00000049 00000-0 96304-4 0 9998
2 00116 66.8106 321.2902 0071496 32.0486 328.4911 13.92290905272218Epoch: 2025-12-23T06:22Z
TLE epoch observation values (Epoch: 2025-12-23T06:22:59.005Z)
Latitude
0.00002°
Longitude
133.49218°
Altitude
878.3 km
Speed
7.436 km/s
True Right ascension
21h 25m 09s
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
15:05:10
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
971.176 km
Perigee altitude
866.833 km
Semi-major axis
7,297.141 km
Eccentricity
0.00715
Inclination
66.8106°
RAAN
321.2902°
Arg. of periapsis
32.0486°
True anomaly
328.05963°
Mean anomaly
328.4911°
Eccentric anomaly
328.2757°
Mean motion
3.48188 °/min
Orbital period
103.39 mins
BSTAR
0.000096304
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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
Loading observer location...
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. |
|---|---|---|---|---|---|---|---|
| 6 mins | 2025-12-23 22:01:51.896Z | 137.812° SSE | 2025-12-23 22:04:51.896Z | 102.859° ESE | 16.934° | 2025-12-23 22:07:51.896Z | 68.963° E |
| 10 mins | 2025-12-23 23:45:51.896Z | 221.586° SW | 2025-12-23 23:50:51.896Z | 327.444° NNW | 41.694° | 2025-12-23 23:55:51.896Z | 23.177° NE |
| 7 mins | 2025-12-24 07:03:51.896Z | 9.571° NNE | 2025-12-24 07:06:51.896Z | 47.314° ENE | 20.681° | 2025-12-24 07:10:51.896Z | 91.751° ESE |
| 10 mins | 2025-12-24 08:48:51.896Z | 324.864° NNW | 2025-12-24 08:53:51.896Z | 224.939° SW | 43.175° | 2025-12-24 08:58:51.896Z | 162.999° S |
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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