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: 7 hours ago
TLE from 7 hours ago
0 TRANSIT 4A
1 116U 61015A 26099.15372939 .00000062 00000-0 10514-3 0 9998
2 116 66.8096 59.7515 0080104 317.6587 41.8327 13.92319633287098Epoch: 2026-04-09T03:41Z
TLE epoch observation values (Epoch: 2026-04-09T03:41:22.219Z)
Latitude
-0°
Longitude
167.0031°
Altitude
879.235 km
Speed
7.435 km/s
True Right ascension
03h 59m 00s
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
16:24:56
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
977.356 km
Perigee altitude
860.452 km
Semi-major axis
7,297.041 km
Eccentricity
0.00801
Inclination
66.8096°
RAAN
59.7515°
Arg. of periapsis
317.6587°
True anomaly
42.44951°
Mean anomaly
41.8327°
Eccentric anomaly
42.14064°
Mean motion
3.48195 °/min
Orbital period
103.39 mins
BSTAR
0.00010514
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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 | 2026-04-09 22:45:43.298Z | 200.268° SSW | 2026-04-09 22:51:43.298Z | 95.763° ESE | 43.942° | 2026-04-09 22:56:43.298Z | 32.987° NE |
| 7 mins | 2026-04-10 00:35:43.298Z | 282.137° WNW | 2026-04-10 00:38:43.298Z | 319.14° NNW | 19.815° | 2026-04-10 00:42:43.298Z | 1.987° NNE |
| 5 mins | 2026-04-10 06:05:43.298Z | 18.271° NNE | 2026-04-10 06:07:43.298Z | 39.565° NE | 15.345° | 2026-04-10 06:10:43.298Z | 69.785° E |
| 10 mins | 2026-04-10 07:50:43.298Z | 337.824° N | 2026-04-10 07:54:43.298Z | 29.688° NE | 43.2° | 2026-04-10 08:00:43.298Z | 143.247° SSE |
| 7 mins | 2026-04-10 09:37:43.298Z | 289.299° WNW | 2026-04-10 09:40:43.298Z | 257.312° W | 17.742° | 2026-04-10 09:44:43.298Z | 216.597° 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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