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SYNCOM 1, 553

Orbit data source: Space-Track

SYNCOM 1, 553 is a payload satellite owned by GSFC (US) that was launched on Thu, 14 Feb 1963 UTC via a THOR DELTA B 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.

Not visible in the next 10 days

SYNCOM 1 details

Identifier	553, 1963-004A
Orbit	Active
Last TLE update	5 days ago
Origin	GSFC (US)
Manufacturer	Hughes
Mission	Non-operational Civil Communications
Bus & Motor	HS-301, TE-M-375
Mass	68 kg wet, ~27 kg dry
Launch date (UTC)	1963-02-14 (62 years ago)
Launch vehicle	THOR DELTA B
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

Expand to show TLE details & history

TLE from 5 days ago

0 SYNCOM 1
1 00553U 63004A   24363.96270858 -.00000058  00000-0  00000-0 0  9993
2 00553  27.8262 283.7319 0780414 184.7567 174.5340  1.16483817 29821

Epoch: 2024-12-28T23:06Z

Definitive object data (Epoch: 2024-12-28T23:06:18.021Z)

Latitude	0.00002°
Longitude	-160.73782°
Altitude	34,752.806 km
Speed	2.989 km/s
True Right ascension	18h 54m 58s
True Declination	0° 00' 00"
Sunlit	Object was in daylight at TLE epoch

Visualization TLE readout

Latitude	-16.91474°
Longitude	54.30343°
Altitude	29,224.666 km
Speed	3.456 km/s
Apparent Right ascension	08h 53m 53s
Apparent Declination	-20° 56' 40"
Sunlit	Object is in daylight

Visualization observer readout

Local Sidereal Time	18:13:41
Azimuth	287.07° WNW
Elevation	-51.048°
Doppler factor	1

Orbital elements

Apogee altitude	34,756.033 km
Perigee altitude	28,800.477 km
Semi-major axis	38,156.392 km
Eccentricity	0.0780414
Inclination	27.8262°
RAAN	283.7319°
Arg. of periapsis	184.7567°
True anomaly	175.3102°
Mean anomaly	174.534°
Eccentric anomaly	174.92921°
Mean motion	0.2912 °/min
BSTAR	Unknown
Orbital period	1236.26 mins