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
Unknown
Radar Cross Section
Medium (>0.1 m² and <1 m²)
Expand to show TLE details & historyLast TLE update: 7 hours ago
TLE from 7 hours ago
0 CALSPHERE 2
1 902U 64063E 26177.71951486 .00000054 00000-0 67478-4 0 9999
2 902 90.2368 76.0242 0017912 193.7994 225.7486 13.52900867857559Epoch: 2026-06-26T17:16Z
TLE epoch observation values (Epoch: 2026-06-26T17:16:06.083Z)
Latitude
59.49076°
Longitude
-98.24493°
Altitude
1,081.096 km
Speed
7.313 km/s
True Right ascension
05h 02m 29s
True Declination
59° 20' 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
11:58:17
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,071.971 km
Perigee altitude
1,045.33 km
Semi-major axis
7,436.787 km
Eccentricity
0.00179
Inclination
90.2368°
RAAN
76.0242°
Arg. of periapsis
193.7994°
True anomaly
225.60181°
Mean anomaly
225.7486°
Eccentric anomaly
225.67518°
Mean motion
3.38427 °/min
Orbital period
106.37 mins
BSTAR
0.000067478
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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. |
|---|---|---|---|---|---|---|---|
| 9 mins | 2026-06-27 04:14:10.219Z | 34.814° NE | 2026-06-27 04:19:10.219Z | 85.37° E | 18.713° | 2026-06-27 04:23:10.219Z | 124.017° SE |
| 11 mins | 2026-06-27 06:00:10.219Z | 353.384° N | 2026-06-27 06:05:10.219Z | 286.49° WNW | 41.548° | 2026-06-27 06:11:10.219Z | 199.102° SSW |
| 8 mins | 2026-06-27 16:12:10.219Z | 109.65° ESE | 2026-06-27 16:16:10.219Z | 67.084° ENE | 19.273° | 2026-06-27 16:20:10.219Z | 28.894° NE |
| 11 mins | 2026-06-27 17:56:10.219Z | 191.691° SSW | 2026-06-27 18:01:10.219Z | 263.296° W | 41.851° | 2026-06-27 18:07:10.219Z | 349.815° 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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