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
SPHERE, 1.1 m
Radar Cross Section
Medium (>0.1 m² and <1 m²)
Expand to show TLE details & historyLast TLE update: 16 hours ago
TLE from 16 hours ago
0 CALSPHERE 2
1 00902U 64063E 26265.00508339 .00000035 00000-0 39562-4 0 9996
2 00902 90.2291 78.0697 0017078 310.3553 176.0048 13.52906529869355Epoch: 2026-09-22T00:07Z
TLE epoch observation values (Epoch: 2026-09-22T00:07:19.204Z)
Latitude
53.71986°
Longitude
-104.32658°
Altitude
1,083.149 km
Speed
7.309 km/s
True Right ascension
17h 13m 31s
True Declination
53° 33' 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
09:03:26
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,071.33 km
Perigee altitude
1,045.929 km
Semi-major axis
7,436.767 km
Eccentricity
0.00171
Inclination
90.2291°
RAAN
78.0697°
Arg. of periapsis
310.3553°
True anomaly
176.01841°
Mean anomaly
176.0048°
Eccentric anomaly
176.01161°
Mean motion
3.38429 °/min
Orbital period
106.37 mins
BSTAR
0.000039562
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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. |
|---|---|---|---|---|---|---|---|
| 12 mins | 2026-09-22 23:09:48.090Z | 18.606° NNE | 2026-09-22 23:15:48.090Z | 83.38° E | 37.876° | 2026-09-22 23:21:48.090Z | 151.274° SSE |
| 10 mins | 2026-09-23 00:57:48.090Z | 335.659° NNW | 2026-09-23 01:01:48.090Z | 285.905° WNW | 34.378° | 2026-09-23 01:07:48.090Z | 220.772° SW |
| 10 mins | 2026-09-23 11:07:48.090Z | 134.573° SE | 2026-09-23 11:11:48.090Z | 83.605° E | 37.236° | 2026-09-23 11:17:48.090Z | 14.741° NNE |
| 10 mins | 2026-09-23 12:53:48.090Z | 219.551° SW | 2026-09-23 12:57:48.090Z | 267.463° W | 33.964° | 2026-09-23 13:03:48.090Z | 337.677° 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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