Showing default

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.

Loading next visibility...

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

Optional Secondary NORAD IDs

Max 10 NORAD IDs; Separated by commas

Initial load time (optional)

ISO8601 Format

TLE date request (optional)

ISO8601 Format

Identifier

340, 1962-029A

Orbit

LEO

Last TLE update

1 day ago

Origin

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

TLE from 1 day ago

0 TELSTAR 1
1 00340U 62029A   25199.52935891 -.00000106  00000-0 -61970-3 0  9999
2 00340  44.7936 220.8186 2423468 199.1068 339.0052  9.12890238101974

Epoch: 2025-07-18T12:42Z

TLE epoch observation values (Epoch: 2025-07-18T12:42:16.609Z)

Latitude

10.89423°

Longitude

-97.44886°

Altitude

1,210.965 km

Speed

7.991 km/s

True Right ascension

01h 58m 47s

True Declination

10° 50' 04"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

30.10218°

Longitude

-123.68322°

Altitude

1,916.984 km

Speed

7.413 km/s

Apparent Right ascension

22h 41m 08s

Apparent Declination

1° 33' 33"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

01:02:06

Azimuth

228.907° WSW

Elevation

40.066°

Doppler factor

Orbital elements

Apogee altitude

5,637.767 km

Perigee altitude

949.839 km

Semi-major axis

9,671.94 km

Eccentricity

0.24235

Inclination

44.7936°

RAAN

220.8186°

Arg. of periapsis

199.1068°

True anomaly

325.35158°

Mean anomaly

339.0052°

Eccentric anomaly

332.61926°

Mean motion

2.28177 °/min

Orbital period

157.77 mins

BSTAR

-0.0006197

Loading maneuver chart data...

Loading SW <> Apogee altitude chart data...

Loading historical data...

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°

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.
7 mins	2025-07-19 12:12:23.712Z	228.68° WSW	2025-07-19 12:12:23.712Z	228.68° WSW	32.675°	2025-07-19 12:19:23.712Z	167.633° S
38 mins	2025-07-20 00:04:23.712Z	148.084° SSE	2025-07-20 00:23:23.712Z	112.994° SE	19.408°	2025-07-20 00:42:23.712Z	77.063° E
57 mins	2025-07-20 02:41:23.712Z	205.462° SW	2025-07-20 03:14:23.712Z	132.51° SE	41.142°	2025-07-20 03:38:23.712Z	64.59° ENE
52 mins	2025-07-20 05:35:23.712Z	249.526° W	2025-07-20 06:09:23.712Z	351.322° N	44.813°	2025-07-20 06:27:23.712Z	72.662° E
37 mins	2025-07-20 08:37:23.712Z	284.593° WNW	2025-07-20 09:03:23.712Z	28.972° NE	44.659°	2025-07-20 09:14:23.712Z	103.013° ESE
22 mins	2025-07-20 11:36:23.712Z	294.171° NW	2025-07-20 11:50:23.712Z	234.17° WSW	35.091°	2025-07-20 11:58:23.712Z	162.588° S

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

Authenticating...

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

Check out TELSTAR 1, 340 on other resources

View TELSTAR 1, 340 on NASA - NSSDCA Website

View TELSTAR 1, 340 on Heavens-Above

View TELSTAR 1, 340 on Keep Track

View TELSTAR 1, 340 on Celestrak

View TELSTAR 1, 340 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.