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
Commercial Communications
Bus & Motor
TSX, Unknown motor
Mass
77 kg wet, 77 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Sphere, 0.4 m
Radar Cross Section
0.581 m², Medium (>0.1 m² and < 1m²)
Expand to show TLE details & historyLast TLE update: 20 hours ago
TLE from 20 hours ago
0 TELSTAR 1
1 00340U 62029A 25258.91878677 -.00000103 00000-0 -59397-3 0 9993
2 00340 44.8028 110.3666 2424996 317.0246 36.6079 9.12886759107405Epoch: 2025-09-15T22:03Z
TLE epoch observation values (Epoch: 2025-09-15T22:03:03.176Z)
Latitude
10.46485°
Longitude
155.15199°
Altitude
1,684.465 km
Speed
7.595 km/s
True Right ascension
08h 04m 07s
True Declination
10° 24' 38"
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
10:25:58
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
5,639.274 km
Perigee altitude
948.379 km
Semi-major axis
9,671.964 km
Eccentricity
0.2425
Inclination
44.8028°
RAAN
110.3666°
Arg. of periapsis
317.0246°
True anomaly
57.90339°
Mean anomaly
36.6079°
Eccentric anomaly
46.72366°
Mean motion
2.28177 °/min
Orbital period
157.77 mins
BSTAR
-0.00059397
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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. |
|---|---|---|---|---|---|---|---|
| 49 mins | 2025-09-16 19:13:44.726Z | 261.312° W | 2025-09-16 19:29:44.726Z | 349.649° N | 44.568° | 2025-09-16 20:02:44.726Z | 80.632° E |
| 59 mins | 2025-09-16 22:03:44.726Z | 289.466° WNW | 2025-09-16 22:26:44.726Z | 349.951° N | 44.972° | 2025-09-16 23:02:44.726Z | 117.56° SE |
| 58 mins | 2025-09-17 00:54:44.726Z | 296.109° NW | 2025-09-17 01:22:44.726Z | 231.773° WSW | 39.065° | 2025-09-17 01:52:44.726Z | 162.818° S |
| 24 mins | 2025-09-17 03:58:44.726Z | 275.436° WNW | 2025-09-17 04:10:44.726Z | 254.5° W | 13.813° | 2025-09-17 04:22:44.726Z | 231.857° WSW |
| 30 mins | 2025-09-17 16:08:44.726Z | 201.73° SSW | 2025-09-17 16:17:44.726Z | 129.142° SE | 39.194° | 2025-09-17 16:38:44.726Z | 63.109° 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 ascending 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 ascending order |
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