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, 0.6 m
Radar Cross Section
Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 15 hours ago
TLE from 15 hours ago
0 TRANSIT 4A
1 00116U 61015A 26234.98811428 -.00000032 00000-0 34541-4 0 9996
2 00116 66.8083 87.3674 0080517 229.3982 130.0074 13.92341231306005Epoch: 2026-08-22T23:42Z
TLE epoch observation values (Epoch: 2026-08-22T23:42:53.073Z)
Latitude
-0.00004°
Longitude
120.35562°
Altitude
960.575 km
Speed
7.353 km/s
True Right ascension
05h 49m 28s
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
06:16:23
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
977.582 km
Perigee altitude
860.076 km
Semi-major axis
7,296.966 km
Eccentricity
0.00805
Inclination
66.8083°
RAAN
87.3674°
Arg. of periapsis
229.3982°
True anomaly
130.70956°
Mean anomaly
130.0074°
Eccentric anomaly
130.35893°
Mean motion
3.48201 °/min
Orbital period
103.39 mins
BSTAR
0.000034541
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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 | 2026-08-23 15:20:10.424Z | 185.826° SSW | 2026-08-23 15:26:10.424Z | 102.835° ESE | 38.143° | 2026-08-23 15:31:10.424Z | 40.804° NE |
| 9 mins | 2026-08-23 17:08:10.424Z | 258.069° W | 2026-08-23 17:12:10.424Z | 305.797° NW | 26.574° | 2026-08-23 17:17:10.424Z | 6.707° NNE |
| 9 mins | 2026-08-24 00:25:10.424Z | 347.268° N | 2026-08-24 00:29:10.424Z | 49.126° ENE | 37.174° | 2026-08-24 00:34:10.424Z | 126.648° SE |
| 7 mins | 2026-08-24 02:12:10.424Z | 294.961° NW | 2026-08-24 02:15:10.424Z | 255.799° W | 23.983° | 2026-08-24 02:19:10.424Z | 205.289° SW |
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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