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: 4 days ago
TLE from 4 days ago
0 TELSTAR 1
1 00340U 62029A 26079.37285960 -.00000005 00000-0 18126-3 0 9997
2 00340 44.8004 125.3237 2426346 325.6225 30.3685 9.12889404124348Epoch: 2026-03-20T08:56Z
TLE epoch observation values (Epoch: 2026-03-20T08:56:55.069Z)
Latitude
10.23267°
Longitude
-176.3946°
Altitude
1,472.305 km
Speed
7.769 km/s
True Right ascension
09h 02m 58s
True Declination
10° 10' 41"
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
02:32:52
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
5,640.557 km
Perigee altitude
947.06 km
Semi-major axis
9,671.945 km
Eccentricity
0.24263
Inclination
44.8004°
RAAN
125.3237°
Arg. of periapsis
325.6225°
True anomaly
48.97026°
Mean anomaly
30.3685°
Eccentric anomaly
39.14449°
Mean motion
2.28177 °/min
Orbital period
157.77 mins
BSTAR
0.00018126
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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. |
|---|---|---|---|---|---|---|---|
| 28 mins | 2026-03-24 04:58:49.689Z | 213.528° SW | 2026-03-24 05:07:49.689Z | 132.134° SE | 41.055° | 2026-03-24 05:26:49.689Z | 63.966° ENE |
| 43 mins | 2026-03-24 07:44:49.689Z | 266.75° W | 2026-03-24 07:56:49.689Z | 343.59° N | 44.343° | 2026-03-24 08:27:49.689Z | 82.557° E |
| 56 mins | 2026-03-24 10:32:49.689Z | 291.047° WNW | 2026-03-24 10:52:49.689Z | 93.527° ESE | 44.996° | 2026-03-24 11:28:49.689Z | 120.32° SE |
| 57 mins | 2026-03-24 13:21:49.689Z | 294.93° NW | 2026-03-24 13:46:49.689Z | 232.876° WSW | 37.987° | 2026-03-24 14:18:49.689Z | 164.948° S |
| 19 mins | 2026-03-24 16:26:49.689Z | 268.685° W | 2026-03-24 16:35:49.689Z | 253.069° W | 12.36° | 2026-03-24 16:45:49.689Z | 235.56° WSW |
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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