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: 10 hours ago
TLE from 10 hours ago
0 CALSPHERE 2
1 00902U 64063E 26307.83502584 .00000055 00000-0 69655-4 0 9998
2 00902 90.2346 79.0766 0018747 176.1437 347.6879 13.52909226875146Epoch: 2026-11-03T20:02Z
TLE epoch observation values (Epoch: 2026-11-03T20:02:26.232Z)
Latitude
16.1947°
Longitude
-84.55691°
Altitude
1,050.253 km
Speed
7.335 km/s
True Right ascension
17h 16m 34s
True Declination
16° 06' 23"
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
01:32:39
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,072.561 km
Perigee altitude
1,044.678 km
Semi-major axis
7,436.757 km
Eccentricity
0.00187
Inclination
90.2346°
RAAN
79.0766°
Arg. of periapsis
176.1437°
True anomaly
347.64199°
Mean anomaly
347.6879°
Eccentric anomaly
347.66495°
Mean motion
3.38429 °/min
Orbital period
106.37 mins
BSTAR
0.000069655
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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 | 2026-11-04 07:48:11.082Z | 111.452° ESE | 2026-11-04 07:52:11.082Z | 72.674° E | 19.021° | 2026-11-04 07:56:11.082Z | 33.165° NE |
| 12 mins | 2026-11-04 09:32:11.082Z | 187.376° SSW | 2026-11-04 09:38:11.082Z | 293.117° NW | 67.23° | 2026-11-04 09:44:11.082Z | 352.355° N |
| 11 mins | 2026-11-04 20:41:11.082Z | 16.731° NNE | 2026-11-04 20:46:11.082Z | 78.618° E | 48.956° | 2026-11-04 20:52:11.082Z | 160.355° S |
| 9 mins | 2026-11-04 22:28:11.082Z | 331.556° NNW | 2026-11-04 22:32:11.082Z | 287.217° WNW | 25.808° | 2026-11-04 22:37:11.082Z | 234.092° 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 descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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