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: 21 hours ago
TLE from 21 hours ago
0 TELSTAR 1
1 00340U 62029A 25349.91656904 .00000038 00000-0 61435-3 0 9992
2 00340 44.8018 301.0589 2425356 137.9345 290.2961 9.12883313115711Epoch: 2025-12-15T21:59Z
TLE epoch observation values (Epoch: 2025-12-15T21:59:51.565Z)
Latitude
27.17056°
Longitude
-82.73662°
Altitude
3,028.164 km
Speed
6.602 km/s
True Right ascension
22h 08m 08s
True Declination
27° 03' 53"
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
18:11:06
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
5,639.653 km
Perigee altitude
948.05 km
Semi-major axis
9,671.988 km
Eccentricity
0.24254
Inclination
44.8018°
RAAN
301.0589°
Arg. of periapsis
137.9345°
True anomaly
262.34685°
Mean anomaly
290.2961°
Eccentric anomaly
276.48886°
Mean motion
2.28176 °/min
Orbital period
157.77 mins
BSTAR
0.00061435
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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
Loading observer location...
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. |
|---|---|---|---|---|---|---|---|
| 34 mins | 2025-12-16 21:12:49.275Z | 187.539° SSW | 2025-12-16 21:34:49.275Z | 133.643° SE | 28.653° | 2025-12-16 21:46:49.275Z | 79.118° E |
| 29 mins | 2025-12-17 00:03:49.275Z | 232.884° WSW | 2025-12-17 00:23:49.275Z | 151.846° SSE | 44.435° | 2025-12-17 00:32:49.275Z | 67.933° E |
| 17 mins | 2025-12-17 03:00:49.275Z | 276.252° WNW | 2025-12-17 03:11:49.275Z | 358.791° N | 42.243° | 2025-12-17 03:17:49.275Z | 77.637° E |
| 11 mins | 2025-12-17 05:51:49.275Z | 291.192° WNW | 2025-12-17 05:57:49.275Z | 230.922° WSW | 42.831° | 2025-12-17 06:02:49.275Z | 129.89° SE |
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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