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: 2 days ago
TLE from 2 days ago
0 TELSTAR 1
1 00340U 62029A 26073.46021314 .00000072 00000-0 75243-3 0 9998
2 00340 44.8035 136.3247 2426727 313.8775 39.0315 9.12888601123801Epoch: 2026-03-14T11:02Z
TLE epoch observation values (Epoch: 2026-03-14T11:02:42.415Z)
Latitude
10.61633°
Longitude
169.39225°
Altitude
1,771.8 km
Speed
7.525 km/s
True Right ascension
09h 48m 36s
True Declination
10° 33' 43"
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
00:43:08
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
5,640.932 km
Perigee altitude
946.695 km
Semi-major axis
9,671.951 km
Eccentricity
0.24267
Inclination
44.8035°
RAAN
136.3247°
Arg. of periapsis
313.8775°
True anomaly
61.26891°
Mean anomaly
39.0315°
Eccentric anomaly
49.62376°
Mean motion
2.28177 °/min
Orbital period
157.77 mins
BSTAR
0.00075243
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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. |
|---|---|---|---|---|---|---|---|
| 24 mins | 2026-03-17 04:44:54.782Z | 175.662° S | 2026-03-17 04:53:54.782Z | 116.463° SE | 27.293° | 2026-03-17 05:08:54.782Z | 66.184° ENE |
| 41 mins | 2026-03-17 07:27:54.782Z | 239.707° WSW | 2026-03-17 07:39:54.782Z | 160.22° S | 44.957° | 2026-03-17 08:08:54.782Z | 69.056° E |
| 55 mins | 2026-03-17 10:15:54.782Z | 279.619° WNW | 2026-03-17 10:34:54.782Z | 10.784° NNE | 44.473° | 2026-03-17 11:10:54.782Z | 98.577° ESE |
| 61 mins | 2026-03-17 13:04:54.782Z | 295.244° NW | 2026-03-17 13:32:54.782Z | 213.461° SW | 43.933° | 2026-03-17 14:05:54.782Z | 140.23° SSE |
| 49 mins | 2026-03-17 15:59:54.782Z | 291.333° WNW | 2026-03-17 16:23:54.782Z | 244.513° WSW | 28.086° | 2026-03-17 16:48:54.782Z | 191.035° SSW |
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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