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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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Iframe embed code

<iframe src="https://www.satcat.com/sats-embedded/340?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

Iframe URL

https://www.satcat.com/sats-embedded/340?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

340, 1962-029A

Orbit

LEO

Country

Related business

AT&T (US)

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, 0.4 m

Radar Cross Section

0.581 m², Medium (>0.1 m² and < 1m²)

Expand to show TLE details & history
Last TLE update: 2 days ago

TLE from 2 days ago

0 TELSTAR 1
1 00340U 62029A   25240.14446182 -.00000053  00000-0 -24945-3 0  9996
2 00340  44.8104 145.2825 2425470 279.7584 256.7014  9.12888781105680

Epoch: 2025-08-28T03:28Z

TLE epoch observation values (Epoch: 2025-08-28T03:28:01.501Z)

Latitude

19.3922°

Longitude

-84.01035°

Altitude

4,313.038 km

Speed

5.777 km/s

True Right ascension

20h 18m 25s

True Declination

19° 19' 14"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

Unknown

Longitude

Unknown

Altitude

Unknown

Speed

Unknown

Apparent Right ascension

Unknown

Apparent Declination

Unknown

Sunlit

N/A

Visualization observer readout

Local Sidereal Time

15:19:46

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

5,639.714 km

Perigee altitude

947.909 km

Semi-major axis

9,671.948 km

Eccentricity

0.24255

Inclination

44.8104°

RAAN

145.2825°

Arg. of periapsis

279.7584°

True anomaly

232.1807°

Mean anomaly

256.7014°

Eccentric anomaly

244.19072°

Mean motion

2.28177 °/min

Orbital period

157.77 mins

BSTAR

-0.00024945

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Other satellites on launch #29 in the year 1962 (1962-07-10 UTC)

DELTA 1 R/B, 341

TELSTAR 1 Visibility forecast

Observer location: undefined°, undefined°
Set 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.
12 mins	2025-08-29 23:46:31.053Z	80.228° E	2025-08-29 23:46:31.053Z	80.228° E	28.38°	2025-08-29 23:58:31.053Z	86.03° E
61 mins	2025-08-30 01:50:31.053Z	291.24° WNW	2025-08-30 02:23:31.053Z	213.476° SW	44.952°	2025-08-30 02:51:31.053Z	124.423° SE
50 mins	2025-08-30 04:46:31.053Z	297.763° NW	2025-08-30 05:15:31.053Z	241.639° WSW	34.669°	2025-08-30 05:36:31.053Z	175.423° S
26 mins	2025-08-30 17:08:31.053Z	144.322° SSE	2025-08-30 17:18:31.053Z	105.999° ESE	19.525°	2025-08-30 17:34:31.053Z	68.831° E
49 mins	2025-08-30 19:47:31.053Z	214.984° SW	2025-08-30 20:03:31.053Z	137.307° SSE	43.077°	2025-08-30 20:36:31.053Z	63.373° ENE
61 mins	2025-08-30 22:34:31.053Z	262.458° W	2025-08-30 22:59:31.053Z	353.832° N	44.598°	2025-08-30 23:35:31.053Z	83.96° E