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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Edit Public Description
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 26037.57929198 .00000038 00000-0 44619-4 0 9997
2 00902 90.2293 72.7161 0016782 243.7943 240.7034 13.52888907838604Epoch: 2026-02-06T13:54Z
TLE epoch observation values (Epoch: 2026-02-06T13:54:10.827Z)
Latitude
55.76274°
Longitude
-92.20895°
Altitude
1,077.128 km
Speed
7.316 km/s
True Right ascension
16h 52m 12s
True Declination
55° 36' 34"
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
22:41:55
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,071.175 km
Perigee altitude
1,046.214 km
Semi-major axis
7,436.831 km
Eccentricity
0.00168
Inclination
90.2293°
RAAN
72.7161°
Arg. of periapsis
243.7943°
True anomaly
240.53586°
Mean anomaly
240.7034°
Eccentric anomaly
240.61961°
Mean motion
3.38424 °/min
Orbital period
106.38 mins
BSTAR
0.000044619
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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 | 2026-02-07 01:49:25.994Z | 143.638° SSE | 2026-02-07 01:55:25.994Z | 69.432° E | 32.637° | 2026-02-07 02:00:25.994Z | 14.832° NNE |
| 9 mins | 2026-02-07 03:37:25.994Z | 226.782° WSW | 2026-02-07 03:41:25.994Z | 279.52° WNW | 27.957° | 2026-02-07 03:46:25.994Z | 334.7° NNW |
| 6 mins | 2026-02-07 13:00:25.994Z | 52.403° ENE | 2026-02-07 13:02:25.994Z | 72.104° E | 15.068° | 2026-02-07 13:06:25.994Z | 110.701° ESE |
| 11 mins | 2026-02-07 14:44:25.994Z | 358.977° N | 2026-02-07 14:49:25.994Z | 315.03° NNW | 44.029° | 2026-02-07 14:55:25.994Z | 190.505° 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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