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
Unknown
Radar Cross Section
Medium (>0.1 m² and <1 m²)
Expand to show TLE details & historyLast TLE update: 11 hours ago
TLE from 11 hours ago
0 TRANSIT 4A
1 00116U 61015A 26142.18130887 -.00000016 00000-0 46495-4 0 9992
2 00116 66.8096 314.4660 0081811 289.5982 69.6280 13.92326801293089Epoch: 2026-05-22T04:21Z
TLE epoch observation values (Epoch: 2026-05-22T04:21:05.086Z)
Latitude
0.00005°
Longitude
9.37899°
Altitude
902.209 km
Speed
7.412 km/s
True Right ascension
20h 57m 51s
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
00:40:23
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
978.577 km
Perigee altitude
859.181 km
Semi-major axis
7,297.016 km
Eccentricity
0.00818
Inclination
66.8096°
RAAN
314.466°
Arg. of periapsis
289.5982°
True anomaly
70.50995°
Mean anomaly
69.628°
Eccentric anomaly
70.06867°
Mean motion
3.48197 °/min
Orbital period
103.39 mins
BSTAR
0.000046495
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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. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2026-05-22 20:23:44.300Z | 5.274° NNE | 2026-05-22 20:26:44.300Z | 35.267° NE | 16.119° | 2026-05-22 20:30:44.300Z | 75.88° E |
| 11 mins | 2026-05-22 22:09:44.300Z | 335.351° NNW | 2026-05-22 22:14:44.300Z | 81.992° E | 44.171° | 2026-05-22 22:20:44.300Z | 146.61° SSE |
| 6 mins | 2026-05-22 23:57:44.300Z | 282.674° WNW | 2026-05-22 23:59:44.300Z | 261.487° W | 16.247° | 2026-05-23 00:03:44.300Z | 220.75° SW |
| 6 mins | 2026-05-23 11:31:44.300Z | 128.434° SE | 2026-05-23 11:33:44.300Z | 105.458° ESE | 17.218° | 2026-05-23 11:37:44.300Z | 64.106° ENE |
| 11 mins | 2026-05-23 13:14:44.300Z | 218.564° SW | 2026-05-23 13:19:44.300Z | 315.94° NNW | 43.297° | 2026-05-23 13:25:44.300Z | 25.155° NE |
| 5 mins | 2026-05-23 15:04:44.300Z | 297.615° NW | 2026-05-23 15:06:44.300Z | 318.469° NNW | 14.849° | 2026-05-23 15:09:44.300Z | 349.47° N |
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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