CALSPHERE 1, 900
Orbit data source: Space-Track
CALSPHERE 1, 900 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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900 intel report (Beta)
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Identifier
Orbit
Country
USRelated business
Manufacturer
NRL
Mission
Operational spacecraft
Bus & Motor
NRL 14", Unknown motor
Mass
1 kg wet, 1 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: 8 hours ago
TLE from 8 hours ago
0 CALSPHERE 1
1 900U 64063C 26308.36950553 .00000484 00000-0 48212-3 0 9999
2 900 90.2229 75.0211 0025581 224.7279 190.0447 13.76751841 90710Epoch: 2026-11-04T08:52Z
TLE epoch observation values (Epoch: 2026-11-04T08:52:05.277Z)
Latitude
54.8159°
Longitude
-101.93422°
Altitude
1,003.108 km
Speed
7.346 km/s
True Right ascension
04h 58m 49s
True Declination
54° 39' 33"
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
12:48:47
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
991.245 km
Perigee altitude
953.638 km
Semi-major axis
7,350.578 km
Eccentricity
0.00256
Inclination
90.2229°
RAAN
75.0211°
Arg. of periapsis
224.7279°
True anomaly
189.99373°
Mean anomaly
190.0447°
Eccentric anomaly
190.0192°
Mean motion
3.44398 °/min
Orbital period
104.53 mins
BSTAR
0.00048212
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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 1 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 | 2026-11-04 19:40:28.306Z | 35.502° NE | 2026-11-04 19:44:28.306Z | 77.373° E | 20.227° | 2026-11-04 19:48:28.306Z | 121.761° SE |
| 10 mins | 2026-11-04 21:24:28.306Z | 351.678° N | 2026-11-04 21:29:28.306Z | 277.424° WNW | 57.496° | 2026-11-04 21:34:28.306Z | 202.993° SW |
| 5 mins | 2026-11-05 07:27:28.306Z | 91.145° ESE | 2026-11-05 07:29:28.306Z | 69.207° E | 16.45° | 2026-11-05 07:32:28.306Z | 38.84° NE |
| 10 mins | 2026-11-05 09:08:28.306Z | 185.737° SSW | 2026-11-05 09:12:28.306Z | 233.214° WSW | 70.701° | 2026-11-05 09:18:28.306Z | 352.94° 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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