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 25342.74461420 .00000103 00000-0 14169-3 0 9992
2 902 90.2361 71.3055 0020225 63.3963 56.7589 13.52882359830519Epoch: 2025-12-08T17:52Z
TLE epoch observation values (Epoch: 2025-12-08T17:52:14.666Z)
Latitude
59.74032°
Longitude
-94.09224°
Altitude
1,063.675 km
Speed
7.33 km/s
True Right ascension
16h 46m 49s
True Declination
59° 35' 48"
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
23:19:54
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,073.759 km
Perigee altitude
1,043.677 km
Semi-major axis
7,436.855 km
Eccentricity
0.00202
Inclination
90.2361°
RAAN
71.3055°
Arg. of periapsis
63.3963°
True anomaly
56.95301°
Mean anomaly
56.7589°
Eccentric anomaly
56.85593°
Mean motion
3.38422 °/min
Orbital period
106.38 mins
BSTAR
0.00014169
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Other satellites on launch #63 in the year 1964 (1964-10-06 UTC)
Did you know?
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 | 2025-12-09 05:48:13.472Z | 151.154° SSE | 2025-12-09 05:54:13.472Z | 82.348° E | 36.007° | 2025-12-09 06:00:13.472Z | 10.289° NNE |
| 8 mins | 2025-12-09 07:37:13.472Z | 234.874° WSW | 2025-12-09 07:40:13.472Z | 270.631° WNW | 24.067° | 2025-12-09 07:45:13.472Z | 328.502° NNW |
| 7 mins | 2025-12-09 16:59:13.472Z | 46.824° ENE | 2025-12-09 17:02:13.472Z | 78.332° E | 17.703° | 2025-12-09 17:06:13.472Z | 118.229° SE |
| 11 mins | 2025-12-09 18:44:13.472Z | 354.189° N | 2025-12-09 18:49:13.472Z | 265.095° W | 42.627° | 2025-12-09 18:55:13.472Z | 195.876° 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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