CALSPHERE 4(A), 1520
Orbit data source: Space-Track
CALSPHERE 4(A), 1520 is a payload satellite owned by NRL (US) in LEO that was launched on Fri, 13 Aug 1965 UTC via a THOR ABLESTAR launch vehicle from the Air Force Western Test Range (AFWTR). Payloads include a variety of satellites, spacecraft, and rockets 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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1520 intel report (Beta)
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CALSPHERE 4(A) details
| Identifier | |
| Orbit | LEO |
| Last TLE update | 3 hours ago |
| Origin | |
| Manufacturer | NRL |
| Mission | Operational Defense Calibration |
| Bus & Motor | NRL 14", Unknown motor |
| Mass | 4 kg wet, 4 kg dry |
| Launch date (UTC) | |
| Launch vehicle | |
| Launch site | |
| Object type | Payload Rocket body Debris |
| Shape & HBR | Sphere, 0.4 m |
| Radar Cross Section | 0.126 m², Small (<0.1 m²) |
Expand to show TLE details & history
TLE from 3 hours ago
0 CALSPHERE 4(A)
1 1520U 65065H 24304.20721628 .00000298 00000-0 55681-3 0 9998
2 1520 89.9326 127.2950 0068895 343.8631 68.8531 13.36123046883668Epoch: 2024-10-30T04:58Z
Definitive object data (Epoch: 2024-10-30T04:58:23.486Z)
| Latitude | 53.54854° |
| Longitude | 13.7799° |
| Altitude | 1,114.257 km |
| Speed | 7.309 km/s |
| True Right ascension | 08h 29m 32s |
| True Declination | 53° 23' 31" |
| Sunlit | Object was in daylight at TLE epoch |
Visualization TLE readout
| Latitude | 20.84186° |
| Longitude | 13.71369° |
| Altitude | 1,085.153 km |
| Speed | 7.331 km/s |
| Apparent Right ascension | 11h 15m 50s |
| Apparent Declination | -11° 52' 49" |
| Sunlit | Object is in daylight |
Visualization observer readout
| Local Sidereal Time | 04:00:29 |
| Azimuth | 87.228° E |
| Elevation | -21.989° |
| Doppler factor | 1 |
Orbital elements
| Apogee | 1,172.49 km |
| Perigee | 1,069.162 km |
| Semi-major axis | 7,498.963 km |
| Eccentricity | 0.0068895 |
| Inclination | 89.9326° |
| RAAN | 127.295° |
| Arg. of periapsis | 343.8631° |
| True anomaly | 69.59169° |
| Mean anomaly | 68.8531° |
| Eccentric anomaly | 69.22217° |
| Mean motion | 3.34227 °/min |
| BSTAR | 0.00055681 |
| Period | 107.71 mins |
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Other satellites on launch #65 in the year 1965 (1965-08-13 UTC)
CALSPHERE 4(A) 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. |
|---|---|---|---|---|---|---|---|
| 11 mins | 2024-10-30 12:00:22.463Z | 144.481° SSE | 2024-10-30 12:06:22.463Z | 71.912° E | 33.092° | 2024-10-30 12:11:22.463Z | 15.676° NNE |
| 10 mins | 2024-10-30 13:49:22.463Z | 224.578° SW | 2024-10-30 13:53:22.463Z | 272.043° WNW | 27.705° | 2024-10-30 13:59:22.463Z | 337.277° NNW |
| 9 mins | 2024-10-30 23:18:22.463Z | 38.415° NE | 2024-10-30 23:22:22.463Z | 77.451° E | 20.104° | 2024-10-30 23:27:22.463Z | 124.325° SE |
| 12 mins | 2024-10-31 01:05:22.463Z | 353.138° N | 2024-10-31 01:10:22.463Z | 286.708° WNW | 42.286° | 2024-10-31 01:17:22.463Z | 196.91° SSW |