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 26254.75666140 -.00000087 00000-0 -47183-3 0 9993
2 00340 44.8044 158.9433 2427969 314.3172 54.6474 9.12894937140362Epoch: 2026-09-11T18:09Z
TLE epoch observation values (Epoch: 2026-09-11T18:09:35.544Z)
Latitude
24.18686°
Longitude
-77.4739°
Altitude
2,394.216 km
Speed
7.05 km/s
True Right ascension
12h 22m 47s
True Declination
24° 04' 57"
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
13:53:25
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
5,642.078 km
Perigee altitude
945.46 km
Semi-major axis
9,671.906 km
Eccentricity
0.2428
Inclination
44.8044°
RAAN
158.9433°
Arg. of periapsis
314.3172°
True anomaly
81.12836°
Mean anomaly
54.6474°
Eccentric anomaly
67.49968°
Mean motion
2.28179 °/min
Orbital period
157.77 mins
BSTAR
-0.00047183
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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. |
|---|---|---|---|---|---|---|---|
| 53 mins | 2026-09-12 23:07:18.460Z | 266.767° W | 2026-09-12 23:25:18.460Z | 351.039° N | 78.463° | 2026-09-13 00:00:18.460Z | 85.646° E |
| 61 mins | 2026-09-13 01:58:18.460Z | 291.744° WNW | 2026-09-13 02:23:18.460Z | 232.161° WSW | 87.386° | 2026-09-13 02:59:18.460Z | 124.266° SE |
| 56 mins | 2026-09-13 04:50:18.460Z | 295.71° NW | 2026-09-13 05:18:18.460Z | 235.428° WSW | 47.391° | 2026-09-13 05:46:18.460Z | 171.113° S |
| 8 mins | 2026-09-13 17:25:18.460Z | 121.085° SE | 2026-09-13 17:28:18.460Z | 105.966° ESE | 12.449° | 2026-09-13 17:33:18.460Z | 86.095° E |
| 35 mins | 2026-09-13 20:01:18.460Z | 214.314° SW | 2026-09-13 20:11:18.460Z | 139.799° SSE | 64.824° | 2026-09-13 20:36:18.460Z | 63.318° ENE |
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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