ISIS 2, 5104
Orbit data source: Space-Track
ISIS 2, 5104 is a payload satellite owned by CRC (CA) in LEO that was launched on Thu, 01 Apr 1971 UTC via a THOR DELTA E1 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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5104 intel report (Beta)
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Identifier
Orbit
Country
CARelated business
Manufacturer
RCA Victor
Mission
Spacecraft
Bus & Motor
ISIS, Unknown motor
Mass
264 kg wet, 264 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Unknown
Radar Cross Section
Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 15 hours ago
TLE from 15 hours ago
0 ISIS 2
1 05104U 71024A 26128.08282265 .00000011 00000-0 57620-6 0 9994
2 05104 88.1641 322.7614 0042916 211.6678 266.3049 12.67885155549666Epoch: 2026-05-08T01:59Z
TLE epoch observation values (Epoch: 2026-05-08T01:59:15.876Z)
Latitude
62.54408°
Longitude
-116.49377°
Altitude
1,403.644 km
Speed
7.163 km/s
True Right ascension
09h 16m 58s
True Declination
62° 24' 53"
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
00:56:41
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,421.075 km
Perigee altitude
1,354.418 km
Semi-major axis
7,765.883 km
Eccentricity
0.00429
Inclination
88.1641°
RAAN
322.7614°
Arg. of periapsis
211.6678°
True anomaly
265.81432°
Mean anomaly
266.3049°
Eccentric anomaly
266.05959°
Mean motion
3.17144 °/min
Orbital period
113.51 mins
BSTAR
5.762e-7
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Other satellites on launch #24 in the year 1971 (1971-04-01 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.ISIS 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. |
|---|---|---|---|---|---|---|---|
| 15 mins | 2026-05-09 00:42:03.101Z | 6.239° NNE | 2026-05-09 00:50:03.101Z | 88.821° E | 41.508° | 2026-05-09 00:57:03.101Z | 165.14° S |
| 11 mins | 2026-05-09 02:38:03.101Z | 329.12° NNW | 2026-05-09 02:43:03.101Z | 283.774° WNW | 23.576° | 2026-05-09 02:49:03.101Z | 234.322° WSW |
| 9 mins | 2026-05-09 11:37:03.101Z | 105.134° ESE | 2026-05-09 11:41:03.101Z | 72.996° E | 18.253° | 2026-05-09 11:46:03.101Z | 33.59° NE |
| 15 mins | 2026-05-09 13:27:03.101Z | 182.294° SSW | 2026-05-09 13:34:03.101Z | 305.804° NW | 44.685° | 2026-05-09 13:42:03.101Z | 358.932° N |
| 6 mins | 2026-05-09 15:26:03.101Z | 269.436° W | 2026-05-09 15:29:03.101Z | 293.129° NW | 14.628° | 2026-05-09 15:32:03.101Z | 315.973° NNW |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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