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
Unknown
Radar Cross Section
Medium (>0.1 m² and <1 m²)
Expand to show TLE details & historyLast TLE update: 1 day ago
TLE from 1 day ago
0 CALSPHERE 1
1 00900U 64063C 26163.15791589 .00000554 00000-0 55438-3 0 9993
2 00900 90.2237 71.6525 0024561 313.5131 142.2395 13.76618187 70736Epoch: 2026-06-12T03:47Z
TLE epoch observation values (Epoch: 2026-06-12T03:47:23.932Z)
Latitude
84.09461°
Longitude
-63.53657°
Altitude
1,003.955 km
Speed
7.349 km/s
True Right ascension
16h 55m 13s
True Declination
84° 03' 38"
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
14:07:24
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
990.972 km
Perigee altitude
954.862 km
Semi-major axis
7,351.054 km
Eccentricity
0.00246
Inclination
90.2237°
RAAN
71.6525°
Arg. of periapsis
313.5131°
True anomaly
142.41143°
Mean anomaly
142.2395°
Eccentric anomaly
142.32551°
Mean motion
3.44365 °/min
Orbital period
104.54 mins
BSTAR
0.00055438
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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. |
|---|---|---|---|---|---|---|---|
| 11 mins | 2026-06-13 06:04:59.008Z | 7.228° NNE | 2026-06-13 06:09:59.008Z | 61.53° ENE | 43.552° | 2026-06-13 06:15:59.008Z | 176.321° S |
| 5 mins | 2026-06-13 07:51:59.008Z | 310.537° NW | 2026-06-13 07:53:59.008Z | 288.866° WNW | 15.678° | 2026-06-13 07:56:59.008Z | 257.957° W |
| 10 mins | 2026-06-13 17:48:59.008Z | 157.022° SSE | 2026-06-13 17:53:59.008Z | 79.418° E | 40.236° | 2026-06-13 17:58:59.008Z | 7.974° NNE |
| 7 mins | 2026-06-13 19:35:59.008Z | 247.757° W | 2026-06-13 19:38:59.008Z | 283.454° WNW | 18.929° | 2026-06-13 19:42:59.008Z | 324.892° NNW |
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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