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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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Identifier
340, 1962-029A
Orbit
LEO
Last TLE update
8 hours ago
Origin
Manufacturer
AT&T/BTL
Mission
Commercial Communications
Bus & Motor
TSX, Unknown motor
Mass
77 kg wet, 77 kg dry
Launch date (UTC)
1962-07-10 (63 years ago)
Launch vehicle
THOR DELTA
Launch site
Air Force Eastern Test Range (AFETR)
Object type
Payload
Rocket body
Debris
Shape & HBR
Sphere, 0.86 m
Radar Cross Section
0.581 m², Medium (>0.1 m² and < 1m²)

Expand to show TLE details & history

TLE from 8 hours ago
0 TELSTAR 1
1 00340U 62029A   25183.48047699 -.00000031  00000-0  21761-4 0  9998
2 00340  44.7941 250.6803 2422916 167.1889 155.8938  9.12889688100502
Epoch: 2025-07-02T11:31Z
TLE epoch observation values (Epoch: 2025-07-02T11:31:53.211Z)
Latitude
-19.46519°
Longitude
136.16357°
Altitude
5,505.992 km
Speed
5.088 km/s
True Right ascension
15h 19m 35s
True Declination
-19° 24' 02"
Sunlit
Object was in daylight at epoch
Visualization orbit readout
Latitude
13.79835°
Longitude
170.56774°
Altitude
5,081.809 km
Speed
5.326 km/s
Apparent Right ascension
18h 14m 34s
Apparent Declination
-4° 57' 25"
Sunlit
Object is in daylight
Visualization observer readout
Local Sidereal Time
07:41:09
Azimuth
34.843° NE
Elevation
-49.967°
Doppler factor
1
Orbital elements
Apogee altitude
5,637.238 km
Perigee altitude
950.376 km
Semi-major axis
9,671.944 km
Eccentricity
0.24229
Inclination
44.7941°
RAAN
250.6803°
Arg. of periapsis
167.1889°
True anomaly
Unknown
Mean anomaly
155.8938°
Eccentric anomaly
Unknown
Mean motion
2.28177 °/min
Orbital period
157.77 mins
BSTAR
0.000021761
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Other satellites on launch #29 in the year 1962 (1962-07-10 UTC)

TELSTAR 1 Visibility forecast

Observer location: undefined°, undefined°

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.
36 mins2025-07-03 03:31:12.358Z160.296° S2025-07-03 03:52:12.358Z121.293° SE20.658°2025-07-03 04:07:12.358Z83.771° E
47 mins2025-07-03 06:12:12.358Z211.656° SW2025-07-03 06:43:12.358Z139.701° SSE41.311°2025-07-03 06:59:12.358Z67.28° ENE
35 mins2025-07-03 09:10:12.358Z254.89° W2025-07-03 09:34:12.358Z335.386° NNW44.506°2025-07-03 09:45:12.358Z71.509° E
22 mins2025-07-03 12:09:12.358Z288.157° WNW2025-07-03 12:24:12.358Z37.381° NE44.453°2025-07-03 12:31:12.358Z103.427° ESE
11 mins2025-07-03 15:03:12.358Z281.829° WNW2025-07-03 15:09:12.358Z230.685° WSW26.427°2025-07-03 15:14:12.358Z172.832° S
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