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SYNCOM 3, 858

Orbit data source: Space-Track

SYNCOM 3, 858 is a payload satellite owned by GSFC (US) in GEO that was launched on Wed, 19 Aug 1964 UTC via a THOR DELTA D 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.

Not visible in the next 10 days

Iframe embed code

<iframe src="https://www.satcat.com/sats-embedded/858?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/858?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

858, 1964-047A

Orbit

GEO

Last TLE update

2 days ago

Origin

National Aeronautics and Space Administration (NASA) (US)

Manufacturer

Hughes

Mission

Non-operational Civil Communications

Bus & Motor

HS-301, SR-12-1

Mass

66 kg wet, 33 kg dry

Launch date (UTC)

1964-08-19 (61 years ago)

Launch vehicle

THOR DELTA D

Launch site

Air Force Eastern Test Range (AFETR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Cyl, 0.71 m

Radar Cross Section

0.415 m², Large (>1 m²)

Expand to show TLE details & history

TLE from 2 days ago

0 SYNCOM 3
1 00858U 64047A   25127.09231306 -.00000180  00000-0  00000-0 0  9993
2 00858   5.9735  68.5865 0002478 151.5665  13.6955  1.00320219 49392

Epoch: 2025-05-07T02:12Z

Definitive object data (Epoch: 2025-05-07T02:12:55.848Z)

Latitude

1.5043°

Longitude

-24.47489°

Altitude

35,762.149 km

Speed

3.076 km/s

True Right ascension

15h 35m 45s

True Declination

1° 30' 10"

Sunlit

Object was in daylight at TLE epoch

Visualization TLE readout

Latitude

-2.90398°

Longitude

19.07612°

Altitude

35,767.407 km

Speed

3.076 km/s

Apparent Right ascension

18h 56m 40s

Apparent Declination

-8° 29' 02"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

13:06:42

Azimuth

98.118° ESE

Elevation

-3.523°

Doppler factor

Orbital elements

Apogee altitude

35,784.522 km

Perigee altitude

35,763.631 km

Semi-major axis

42,152.213 km

Eccentricity

0.0002478

Inclination

5.9735°

RAAN

68.5865°

Arg. of periapsis

151.5665°

True anomaly

13.70223°

Mean anomaly

13.6955°

Eccentric anomaly

13.69886°

Mean motion

0.25079 °/min

BSTAR

Unknown

Orbital period

1435.46 mins

Loading historical data...

858 neighbors

Authenticating...

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Other satellites on launch #47 in the year 1964 (1964-08-19 UTC)

DELTA 1 R/B, 862

SYNCOM 3 Visibility forecast

Observer location: undefined°, undefined°

SYNCOM 3 is not visible in the next 10 days

Authenticating...

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Check out SYNCOM 3, 858 on other resources

View SYNCOM 3, 858 on NASA - NSSDCA Website

View SYNCOM 3, 858 on Heavens-Above

View SYNCOM 3, 858 on Keep Track

View SYNCOM 3, 858 on Celestrak

View SYNCOM 3, 858 on Gunter's Space Page

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