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: 7 hours ago
TLE from 7 hours ago
0 CALSPHERE 2
1 00902U 64063E 26127.87095884 .00000049 00000-0 60903-4 0 9992
2 00902 90.2358 74.8253 0018259 350.9513 69.1688 13.52897255850817Epoch: 2026-05-07T20:54Z
TLE epoch observation values (Epoch: 2026-05-07T20:54:10.843Z)
Latitude
60.40446°
Longitude
-104.84379°
Altitude
1,067.181 km
Speed
7.326 km/s
True Right ascension
04h 57m 38s
True Declination
60° 15' 46"
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
12:24:32
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,072.243 km
Perigee altitude
1,045.085 km
Semi-major axis
7,436.801 km
Eccentricity
0.00183
Inclination
90.2358°
RAAN
74.8253°
Arg. of periapsis
350.9513°
True anomaly
69.36451°
Mean anomaly
69.1688°
Eccentric anomaly
69.26664°
Mean motion
3.38426 °/min
Orbital period
106.37 mins
BSTAR
0.000060903
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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 | 2026-05-08 07:50:56.997Z | 22.129° NNE | 2026-05-08 07:56:56.997Z | 87.534° E | 28.153° | 2026-05-08 08:01:56.997Z | 142.744° SSE |
| 11 mins | 2026-05-08 09:37:56.997Z | 343.191° N | 2026-05-08 09:42:56.997Z | 281.693° WNW | 32.684° | 2026-05-08 09:48:56.997Z | 215.095° SW |
| 9 mins | 2026-05-08 19:48:56.997Z | 128.853° SE | 2026-05-08 19:52:56.997Z | 80.551° E | 27.816° | 2026-05-08 19:57:56.997Z | 21.434° NNE |
| 10 mins | 2026-05-08 21:34:56.997Z | 214.926° SW | 2026-05-08 21:38:56.997Z | 268.801° W | 32.435° | 2026-05-08 21:44:56.997Z | 341.066° N |
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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