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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
902, 1964-063E
Orbit
LEO
Last TLE update
18 hours ago
Origin
Manufacturer
NRL
Mission
Operational Defense Calibration
Bus & Motor
NRL 14", Unknown motor
Mass
10 kg wet, 10 kg dry
Launch date (UTC)
1964-10-06 (61 years ago)
Launch vehicle
THOR ABLESTAR
Launch site
Air Force Western Test Range (AFWTR)
Object type
Payload
Rocket body
Debris
Shape & HBR
Sphere, 0.36 m
Radar Cross Section
0.102 m², Small (<0.1 m²)

Expand to show TLE details & history

TLE from 18 hours ago
0 CALSPHERE 2
1 00902U 64063E   25114.85248154  .00000081  00000-0  10825-3 0  9998
2 00902  90.2297  65.9896 0018817   8.3535  23.5100 13.52858645799704
Epoch: 2025-04-24T20:27Z
Definitive object data (Epoch: 2025-04-24T20:27:34.405Z)
Latitude
32.00481°
Longitude
-94.16454°
Altitude
1,053.084 km
Speed
7.334 km/s
True Right ascension
04h 23m 23s
True Declination
31° 51' 24"
Sunlit
Object was in daylight at TLE epoch
Visualization TLE readout
Latitude
62.60523°
Longitude
-94.44533°
Altitude
1,064.809 km
Speed
7.329 km/s
Apparent Right ascension
07h 32m 11s
Apparent Declination
21° 06' 19"
Sunlit
Object is in daylight
Visualization observer readout
Local Sidereal Time
21:36:34
Azimuth
31.418° NE
Elevation
-22.437°
Doppler factor
1
Orbital elements
Apogee altitude
1,072.799 km
Perigee altitude
1,044.811 km
Semi-major axis
7,436.942 km
Eccentricity
0.0018817
Inclination
90.2297°
RAAN
65.9896°
Arg. of periapsis
8.3535°
True anomaly
23.5962°
Mean anomaly
23.51°
Eccentric anomaly
23.55308°
Mean motion
3.38417 °/min
BSTAR
0.00010825
Orbital period
106.38 mins
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CALSPHERE 2 Visibility forecast

Observer location: undefined°, undefined°

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.
7 mins2025-04-25 19:31:38.269Z108.788° ESE2025-04-25 19:35:38.269Z69.535° E16.868°2025-04-25 19:38:38.269Z39.19° NE
11 mins2025-04-25 21:15:38.269Z185.964° SSW2025-04-25 21:20:38.269Z246.506° WSW43.304°2025-04-25 21:26:38.269Z352.172° N
11 mins2025-04-26 08:24:38.269Z18.999° NNE2025-04-26 08:29:38.269Z86.922° E36.431°2025-04-26 08:35:38.269Z159.614° S
9 mins2025-04-26 10:11:38.269Z330.17° NNW2025-04-26 10:15:38.269Z283.072° WNW24.698°2025-04-26 10:20:38.269Z231.422° WSW
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