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 902U 64063E 25312.80059737 .00000097 00000-0 13295-3 0 9991
2 902 90.2347 70.5896 0019773 142.7368 25.9510 13.52878324826462Epoch: 2025-11-08T19:12Z
TLE epoch observation values (Epoch: 2025-11-08T19:12:51.612Z)
Latitude
11.16434°
Longitude
-85.80438°
Altitude
1,050.666 km
Speed
7.334 km/s
True Right ascension
16h 42m 32s
True Declination
11° 06' 06"
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
22:20:16
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,073.438 km
Perigee altitude
1,044.028 km
Semi-major axis
7,436.87 km
Eccentricity
0.00198
Inclination
90.2347°
RAAN
70.5896°
Arg. of periapsis
142.7368°
True anomaly
26.05037°
Mean anomaly
25.951°
Eccentric anomaly
26.00066°
Mean motion
3.38421 °/min
Orbital period
106.38 mins
BSTAR
0.00013295
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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. |
|---|---|---|---|---|---|---|---|
| 8 mins | 2025-11-09 06:57:42.674Z | 109.116° ESE | 2025-11-09 07:01:42.674Z | 66.779° ENE | 18.791° | 2025-11-09 07:05:42.674Z | 28.866° NE |
| 11 mins | 2025-11-09 08:41:42.674Z | 190.981° SSW | 2025-11-09 08:46:42.674Z | 264.216° W | 42.105° | 2025-11-09 08:52:42.674Z | 350.281° N |
| 11 mins | 2025-11-09 19:50:42.674Z | 17.589° NNE | 2025-11-09 19:55:42.674Z | 96.189° ESE | 38.278° | 2025-11-09 20:01:42.674Z | 164.253° S |
| 8 mins | 2025-11-09 21:37:42.674Z | 326.307° NNW | 2025-11-09 21:41:42.674Z | 279.258° WNW | 22.092° | 2025-11-09 21:45:42.674Z | 238.275° WSW |
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 ascending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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