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DOY 203 | 2024-07-21T10:15:48Z
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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). Payloads include a variety of satellites, spacecraft, and rockets 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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SYNCOM 3 details
NORAD ID858
COSPAR ID
1964-047A
Orbit
GEO
Last TLE update2 days ago
Origin
Flag of USGSFC (US)
ManufacturerHughes
BusHS-301
MotorSR-12-1
Mass66 kg wet, 33 kg dry
Launch date (UTC)
1964-08-19 (60 years ago)
Launch vehicle
Thor Delta D
Launch site
Air Force Eastern Test Range (AFETR)
Object type
Payload
Rocket body
Debris
Radar Cross SectionLarge (>1 m²)
Predictive object data (real-time)
Latitude-5.23964°
Longitude-111.38737°
Altitude35,766.346 km
Speed3.075 km/s
Apparent Right ascension22h 07m 05s
Apparent Declination-11° 59' 45"
Sunlit
Object is in daylight
Predictive observer data (real-time)
Local Sidereal Time23:14:02
Azimuth200.327° SSW
Elevation35.809°
Doppler factor1
Orbital elements
Apogee35,769.395 km
Perigee35,739.532 km
Semi-major axis42,132.6 km
Eccentricity0.0003544
Inclination5.2508°
RAAN71.2926°
Arg. of periapsis114.0095°
True anomaly139.02244°
Mean anomaly138.9958°
Mean motion0.25097 °/min
BSTARUnknown
Period1434.45 mins
Definitive object data (Epoch: 2024-07-19T09:49:35.983Z)
Latitude-5.05009°
Longitude-120.82564°
Altitude35,764.977 km
Speed3.075 km/s
True Right ascension21h 37m 02s
True Declination-5° 02' 42"
Sunlit
Object was in daylight at TLE epoch
TLE from 2 days ago
0 SYNCOM 3
1 00858U 64047A   24201.40944425  .00000000  00000-0  00000-0 0  9993
2 00858   5.2508  71.2926 0003544 114.0095 138.9958  1.00390294 46467
Epoch: 2024-07-19T09:49Z
No data available
Other satellites on launch #47 in the year 1964 (1964-08-19 UTC)

SYNCOM 3 Visibility forecast

Observer location: 39.9160978°, -105.1181434

SYNCOM 3 is not visible in the next 10 days
Span
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