CALSPHERE 2, 902
Orbit data source: Space-Track
CALSPHERE 2, 902 is a payload satellite owned by NRL (US) in LEO that was launched on Tue, 06 Oct 1964 UTC via a THOR ABLESTAR launch vehicle from the Air Force Western Test Range (AFWTR). 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
NRL
Mission
Operational spacecraft
Bus & Motor
NRL 14", Unknown motor
Mass
10 kg wet, 10 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Unknown
Radar Cross Section
Small (<0.1 m²)
Expand to show TLE details & historyLast TLE update: 1 day ago
TLE from 1 day ago
0 CALSPHERE 2
1 00902U 64063E 26135.28495774 .00000017 00000-0 12640-4 0 9998
2 00902 90.2367 75.0032 0017531 328.6408 179.3120 13.52897534851818Epoch: 2026-05-15T06:50Z
TLE epoch observation values (Epoch: 2026-05-15T06:50:20.348Z)
Latitude
32.09994°
Longitude
-80.45234°
Altitude
1,078.839 km
Speed
7.309 km/s
True Right ascension
17h 00m 36s
True Declination
31° 57' 07"
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
19:07:30
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,071.7 km
Perigee altitude
1,045.625 km
Semi-major axis
7,436.8 km
Eccentricity
0.00175
Inclination
90.2367°
RAAN
75.0032°
Arg. of periapsis
328.6408°
True anomaly
179.31441°
Mean anomaly
179.312°
Eccentric anomaly
179.3132°
Mean motion
3.38426 °/min
Orbital period
106.37 mins
BSTAR
0.00001264
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Other satellites on launch #63 in the year 1964 (1964-10-06 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.CALSPHERE 2 Visibility forecast
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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. |
|---|---|---|---|---|---|---|---|
| 11 mins | 2026-05-16 19:29:21.185Z | 144.977° SSE | 2026-05-16 19:35:21.185Z | 75.423° E | 32.75° | 2026-05-16 19:40:21.185Z | 15.871° NNE |
| 9 mins | 2026-05-16 21:17:21.185Z | 224.671° SW | 2026-05-16 21:21:21.185Z | 274.722° WNW | 27.657° | 2026-05-16 21:26:21.185Z | 333.117° NNW |
| 6 mins | 2026-05-17 06:40:21.185Z | 50.183° ENE | 2026-05-17 06:43:21.185Z | 79.955° E | 15.364° | 2026-05-17 06:46:21.185Z | 108.649° ESE |
| 11 mins | 2026-05-17 08:25:21.185Z | 358.198° N | 2026-05-17 08:30:21.185Z | 241.215° WSW | 44.156° | 2026-05-17 08:36:21.185Z | 190.133° SSW |
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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