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: 14 hours ago
TLE from 14 hours ago
0 CALSPHERE 2
1 902U 64063E 26037.57929197 .00000038 00000-0 44619-4 0 9996
2 902 90.2293 72.7161 0016782 243.7943 240.7034 13.52888907838604Epoch: 2026-02-06T13:54Z
TLE epoch observation values (Epoch: 2026-02-06T13:54:10.826Z)
Latitude
55.76275°
Longitude
-92.20894°
Altitude
1,077.128 km
Speed
7.316 km/s
True Right ascension
16h 52m 12s
True Declination
55° 36' 34"
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
05:41:26
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,071.175 km
Perigee altitude
1,046.214 km
Semi-major axis
7,436.831 km
Eccentricity
0.00168
Inclination
90.2293°
RAAN
72.7161°
Arg. of periapsis
243.7943°
True anomaly
240.53586°
Mean anomaly
240.7034°
Eccentric anomaly
240.61961°
Mean motion
3.38424 °/min
Orbital period
106.38 mins
BSTAR
0.000044619
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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. |
|---|---|---|---|---|---|---|---|
| 11 mins | 2026-02-07 03:35:48.940Z | 216.452° SW | 2026-02-07 03:40:48.940Z | 269.028° W | 27.83° | 2026-02-07 03:46:48.940Z | 336.707° NNW |
| 5 mins | 2026-02-07 13:00:48.940Z | 55.907° ENE | 2026-02-07 13:02:48.940Z | 76.129° E | 15.162° | 2026-02-07 13:05:48.940Z | 105.658° ESE |
| 11 mins | 2026-02-07 14:44:48.940Z | 358.652° N | 2026-02-07 14:49:48.940Z | 278.297° WNW | 44.425° | 2026-02-07 14:55:48.940Z | 190.219° SSW |
| 6 mins | 2026-02-08 00:57:48.940Z | 95.143° ESE | 2026-02-08 01:00:48.940Z | 64.863° ENE | 15.492° | 2026-02-08 01:03:48.940Z | 36.994° NE |
| 11 mins | 2026-02-08 02:40:48.940Z | 182.136° SSW | 2026-02-08 02:45:48.940Z | 286.057° WNW | 44.475° | 2026-02-08 02:51:48.940Z | 354.836° 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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