EXPLORER 31 (ISIS-X), 1806
Orbit data source: Space-Track
EXPLORER 31 (ISIS-X), 1806 is a payload satellite owned by GSFC (US) in LEO that was launched on Mon, 29 Nov 1965 UTC via a THOR SLV-2 AGENA B 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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1806 intel report (Beta)
EXPLORER 31 (ISIS-X) details
| Identifier | |
| Orbit | LEO |
| Last TLE update | 1 day ago |
| Origin | |
| Manufacturer | APL |
| Mission | Civil Science |
| Bus & Motor | DME, Unknown motor |
| Mass | 98 kg wet, 98 kg dry |
| Launch date (UTC) | |
| Launch vehicle | |
| Launch site | |
| Object type | Payload Rocket body Debris |
| Shape & HBR | Oct Cyl, 0.9 m |
| Radar Cross Section | 0.700 m², Medium (>0.1 m² and < 1m²) |
Expand to show TLE details & history
TLE from 1 day ago
0 EXPLORER 31 (ISIS-X)
1 01806U 65098B 25022.46744285 .00000872 00000-0 29509-3 0 9999
2 01806 79.7745 50.8587 1427989 55.1065 317.5996 12.07554958587029Epoch: 2025-01-22T11:13Z
Definitive object data (Epoch: 2025-01-22T11:13:07.062Z)
| Latitude | -0.00001° |
| Longitude | 120.52038° |
| Altitude | 890.74 km |
| Speed | 7.749 km/s |
| True Right ascension | 03h 23m 26s |
| True Declination | 0° 00' 00" |
| Sunlit | Object was in daylight at TLE epoch |
Visualization TLE readout
| Latitude | 66.8334° |
| Longitude | -85.17472° |
| Altitude | 942.275 km |
| Speed | 7.71 km/s |
| Apparent Right ascension | 04h 06m 15s |
| Apparent Declination | 49° 19' 40" |
| Sunlit | Object is in daylight |
Visualization observer readout
| Local Sidereal Time | 14:44:22 |
| Azimuth | 346.822° N |
| Elevation | 1.052° |
| Doppler factor | 1 |
Orbital elements
| Apogee altitude | 2,790.3 km |
| Perigee altitude | 499.009 km |
| Semi-major axis | 8,022.792 km |
| Eccentricity | 0.1427989 |
| Inclination | 79.7745° |
| RAAN | 50.8587° |
| Arg. of periapsis | 55.1065° |
| True anomaly | 305.00594° |
| Mean anomaly | 317.5996° |
| Eccentric anomaly | 311.46887° |
| Mean motion | 3.02033 °/min |
| BSTAR | 0.00029509 |
| Orbital period | 119.19 mins |
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Other satellites on launch #98 in the year 1965 (1965-11-29 UTC)
EXPLORER 31 (ISIS-X) 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. |
|---|---|---|---|---|---|---|---|
| 17 mins | 2025-01-23 13:34:17.143Z | 346.247° N | 2025-01-23 13:40:17.143Z | 305.219° NW | 44.463° | 2025-01-23 13:51:17.143Z | 175.354° S |
| 6 mins | 2025-01-23 15:39:17.143Z | 285.466° WNW | 2025-01-23 15:41:17.143Z | 270.462° WNW | 12.946° | 2025-01-23 15:45:17.143Z | 245.91° WSW |
| 5 mins | 2025-01-24 03:07:17.143Z | 225.975° WSW | 2025-01-24 03:09:17.143Z | 268.471° W | 28.776° | 2025-01-24 03:12:17.143Z | 346.951° N |
| 9 mins | 2025-01-24 11:28:17.143Z | 39.132° NE | 2025-01-24 11:31:17.143Z | 66.521° ENE | 16.804° | 2025-01-24 11:37:17.143Z | 107.419° ESE |
| 5 mins | 2025-01-24 13:27:17.143Z | 345.958° N | 2025-01-24 13:32:17.143Z | 266.287° W | 44.813° | 2025-01-24 13:32:17.143Z | 266.287° W |
Authenticating...
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