TELSTAR 1, 340
Orbit data source: Space-Track
TELSTAR 1, 340 is a payload satellite owned by AT&T (US) in LEO that was launched on Tue, 10 Jul 1962 UTC via a THOR DELTA 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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340 intel report (Beta)
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Identifier
Orbit
Country
USRelated business
Manufacturer
AT&T/BTL
Mission
Spacecraft
Bus & Motor
TSX, Unknown motor
Mass
77 kg wet, 77 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: 16 hours ago
TLE from 16 hours ago
0 TELSTAR 1
1 340U 62029A 26150.02984617 -.00000031 00000-0 11373-3 0 9990
2 340 44.8055 353.8392 2427072 106.1069 37.9444 9.12893027130797Epoch: 2026-05-30T00:42Z
TLE epoch observation values (Epoch: 2026-05-30T00:42:58.709Z)
Latitude
9.8946°
Longitude
-94.52208°
Altitude
1,731.261 km
Speed
7.558 km/s
True Right ascension
10h 55m 05s
True Declination
9° 50' 37"
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
01:54:08
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
5,641.227 km
Perigee altitude
946.338 km
Semi-major axis
9,671.919 km
Eccentricity
0.24271
Inclination
44.8055°
RAAN
353.8392°
Arg. of periapsis
106.1069°
True anomaly
59.7807°
Mean anomaly
37.9444°
Eccentric anomaly
48.33246°
Mean motion
2.28178 °/min
Orbital period
157.77 mins
BSTAR
0.00011373
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Other satellites on launch #29 in the year 1962 (1962-07-10 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.TELSTAR 1 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. |
|---|---|---|---|---|---|---|---|
| 15 mins | 2026-05-30 18:32:50.358Z | 260.376° W | 2026-05-30 18:41:50.358Z | 331.241° NNW | 43.006° | 2026-05-30 18:47:50.358Z | 68.432° E |
| 10 mins | 2026-05-30 21:23:50.358Z | 294.682° NW | 2026-05-30 21:27:50.358Z | 347.935° N | 43.025° | 2026-05-30 21:33:50.358Z | 101.277° ESE |
| 10 mins | 2026-05-31 00:09:50.358Z | 265.193° W | 2026-05-31 00:13:50.358Z | 210.796° SW | 25.669° | 2026-05-31 00:19:50.358Z | 161.549° S |
| 20 mins | 2026-05-31 15:20:50.358Z | 208.908° SW | 2026-05-31 15:33:50.358Z | 149.489° SSE | 34.715° | 2026-05-31 15:40:50.358Z | 79.721° E |
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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Click to sort rows by Secondary header in ascending order | Click to sort rows by Secondary name header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Owner header in ascending order | Click to sort rows by Obj. Type header in ascending order | Click to sort rows by Miss dist. header in ascending order | Click to sort rows by Rel. speed header in ascending order | Click to sort rows by Apr. angle header in ascending order | Click to sort rows by TCA header in descending order |
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