SYNCOM 2 (A 26), 634
Orbit data source: Space-Track
SYNCOM 2 (A 26), 634 is a payload satellite owned by GSFC (US) in GEO that was launched on Fri, 26 Jul 1963 UTC via a THOR DELTA B 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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Identifier
Orbit
Country
USRelated business
Manufacturer
Hughes
Mission
Non-operational spacecraft
Bus & Motor
HS-301, JPL SR-12-1
Mass
66 kg wet, ~30 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
CYL, 0.2 m
Radar Cross Section
Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 2 days ago
TLE from 2 days ago
0 SYNCOM 2 (A 26)
1 634U 63031A 26251.95667748 -.00000009 00000-0 00000+0 0 9993
2 634 29.8045 299.2521 0007339 211.6951 246.6920 1.00275595231201Epoch: 2026-09-08T22:57Z
TLE epoch observation values (Epoch: 2026-09-08T22:57:36.934Z)
Latitude
29.47251°
Longitude
66.37638°
Altitude
35,798.993 km
Speed
3.074 km/s
True Right ascension
02h 35m 11s
True Declination
29° 26' 52"
Sunlit
Visualization orbit readout
Latitude
Unknown
Longitude
Unknown
Altitude
Unknown
Speed
Unknown
Apparent Right ascension
Unknown
Apparent Declination
Unknown
Sunlit
Visualization observer readout
Local Sidereal Time
18:04:50
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
35,817.155 km
Perigee altitude
35,755.266 km
Semi-major axis
42,164.347 km
Eccentricity
0.00073
Inclination
29.8045°
RAAN
299.2521°
Arg. of periapsis
211.6951°
True anomaly
246.61479°
Mean anomaly
246.692°
Eccentric anomaly
246.65339°
Mean motion
0.25068 °/min
Orbital period
1,436.08 mins
BSTAR
0
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Other satellites on launch #31 in the year 1963 (1963-07-26 UTC)
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You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.SYNCOM 2 (A 26) Visibility
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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. |
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| SYNCOM 2 (A 26) is likely not visible in the next few days. |
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634 neighbors
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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 descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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