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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Edit Public Description
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: 13 hours ago
TLE from 13 hours ago
0 TELSTAR 1
1 00340U 62029A 25357.16407696 -.00000081 00000-0 -33841-3 0 9990
2 00340 44.7995 287.5736 2425423 152.3519 348.3696 9.12883978116375Epoch: 2025-12-23T03:56Z
TLE epoch observation values (Epoch: 2025-12-23T03:56:16.249Z)
Latitude
31.22851°
Longitude
-80.8392°
Altitude
1,031.332 km
Speed
8.152 km/s
True Right ascension
04h 40m 43s
True Declination
31° 04' 55"
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
16:12:22
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
5,639.712 km
Perigee altitude
947.982 km
Semi-major axis
9,671.984 km
Eccentricity
0.24254
Inclination
44.7995°
RAAN
287.5736°
Arg. of periapsis
152.3519°
True anomaly
340.48217°
Mean anomaly
348.3696°
Eccentric anomaly
344.70346°
Mean motion
2.28176 °/min
Orbital period
157.77 mins
BSTAR
-0.00033841
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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. |
|---|---|---|---|---|---|---|---|
| 32 mins | 2025-12-23 18:40:52.729Z | 163.491° S | 2025-12-23 18:59:52.729Z | 126.384° SE | 19.654° | 2025-12-23 19:12:52.729Z | 88.767° E |
| 40 mins | 2025-12-23 21:23:52.729Z | 213.177° SW | 2025-12-23 21:50:52.729Z | 141.43° SSE | 40.853° | 2025-12-23 22:03:52.729Z | 68.784° E |
| 28 mins | 2025-12-24 00:20:52.729Z | 256.761° W | 2025-12-24 00:40:52.729Z | 2.333° NNE | 44.212° | 2025-12-24 00:48:52.729Z | 70.285° E |
| 17 mins | 2025-12-24 03:17:52.729Z | 289.6° WNW | 2025-12-24 03:28:52.729Z | 37.247° NE | 44.261° | 2025-12-24 03:34:52.729Z | 103.076° ESE |
| 9 mins | 2025-12-24 06:08:52.729Z | 276.347° WNW | 2025-12-24 06:13:52.729Z | 222.791° SW | 23.188° | 2025-12-24 06:17:52.729Z | 175.189° S |
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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