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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CALSPHERE 4(A) details
| Identifier | |
| Orbit | LEO |
| Last TLE update | 9 hours ago |
| Origin | |
| Manufacturer | NRL |
| Mission status | Operational |
| Mission | 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 |
| Radar Cross Section | 0.04 m², Small (<0.1 m²) |
Expand to show TLE details & history
TLE from 9 hours ago
0 CALSPHERE 4(A)
1 01520U 65065H 24261.52500067 .00000329 00000-0 61414-3 0 9993
2 01520 89.9390 127.5615 0070897 102.2333 329.1924 13.36104301877554Epoch: 2024-09-17T12:36Z
Definitive object data (Epoch: 2024-09-17T12:36:00.057Z)
| Latitude | 71.07345° |
| Longitude | -58.20017° |
| Altitude | 1,090.597 km |
| Speed | 7.335 km/s |
| True Right ascension | 08h 30m 57s |
| True Declination | 70° 58' 21" |
| Sunlit | Object was in daylight at TLE epoch |
Predictive object data (real-time)
| Latitude | 77.30888° |
| Longitude | -58.10992° |
| Altitude | 1,088.327 km |
| Speed | 7.338 km/s |
| Apparent Right ascension | 03h 40m 35s |
| Apparent Declination | 31° 53' 10" |
| Sunlit | Object is in daylight |
Predictive observer data (real-time)
| Local Sidereal Time | 14:25:48 |
| Azimuth | 343.54° N |
| Elevation | -16.137° |
| Doppler factor | 1 |
Orbital elements
| Apogee | 1,174.062 km |
| Perigee | 1,067.73 km |
| Semi-major axis | 7,499.033 km |
| Eccentricity | 0.0070897 |
| Inclination | 89.939° |
| RAAN | 127.5615° |
| Arg. of periapsis | 102.2333° |
| True anomaly | 328.77313° |
| Mean anomaly | 329.1924° |
| Eccentric anomaly | 328.98308° |
| Mean motion | 3.34222 °/min |
| BSTAR | 0.00061414 |
| Period | 107.71 mins |
No data available
Other satellites on launch #65 in the year 1965 (1965-08-13 UTC)
CALSPHERE 4(A) Visibility forecast
Observer location: 39.9160978°, -105.1181434
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. |
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