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
SPHERE + ANT, 1.1 m
Radar Cross Section
Medium (>0.1 m² and <1 m²)
Expand to show TLE details & historyLast TLE update: 1 day ago
TLE from 1 day ago
0 TELSTAR 1
1 00340U 62029A 26261.97833744 -.00000030 00000-0 -47441-5 0 9998
2 00340 44.8004 145.5072 2427194 328.6683 28.1081 9.12894061141026Epoch: 2026-09-18T23:28Z
TLE epoch observation values (Epoch: 2026-09-18T23:28:48.354Z)
Latitude
10.02157°
Longitude
165.60991°
Altitude
1,401.595 km
Speed
7.828 km/s
True Right ascension
10h 22m 49s
True Declination
9° 58' 04"
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
16:14:52
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
5,641.336 km
Perigee altitude
946.215 km
Semi-major axis
9,671.913 km
Eccentricity
0.24272
Inclination
44.8004°
RAAN
145.5072°
Arg. of periapsis
328.6683°
True anomaly
45.62075°
Mean anomaly
28.1081°
Eccentric anomaly
36.3511°
Mean motion
2.28178 °/min
Orbital period
157.77 mins
BSTAR
-0.0000047441
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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. |
|---|---|---|---|---|---|---|---|
| 54 mins | 2026-09-19 23:24:51.030Z | 284.31° WNW | 2026-09-19 23:43:51.030Z | 19.371° NNE | 80.855° | 2026-09-20 00:18:51.030Z | 105.329° ESE |
| 59 mins | 2026-09-20 02:14:51.030Z | 295.373° NW | 2026-09-20 02:39:51.030Z | 221.951° SW | 67.008° | 2026-09-20 03:13:51.030Z | 147.923° SSE |
| 45 mins | 2026-09-20 05:08:51.030Z | 287.902° WNW | 2026-09-20 05:30:51.030Z | 245.685° WSW | 25.596° | 2026-09-20 05:53:51.030Z | 201.087° SSW |
| 20 mins | 2026-09-20 17:34:51.030Z | 173.952° S | 2026-09-20 17:40:51.030Z | 122.873° SE | 33.926° | 2026-09-20 17:54:51.030Z | 66.222° ENE |
| 37 mins | 2026-09-20 20:16:51.030Z | 247.228° WSW | 2026-09-20 20:26:51.030Z | 280.448° WNW | 85.969° | 2026-09-20 20:53:51.030Z | 71.154° E |
| 16 mins | 2026-09-20 23:03:51.030Z | 283.499° WNW | 2026-09-20 23:19:51.030Z | 347.43° N | 78.74° | 2026-09-20 23:19:51.030Z | 347.43° 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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