MIDAS 5 (STRONGBACK), 271
Orbit data source: Space-Track
MIDAS 5 (STRONGBACK), 271 is a payload satellite owned by USAF SSD (US) in LEO that was launched on Mon, 09 Apr 1962 UTC via an ATLAS AGENA B 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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271 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
USRelated business
Manufacturer
LMSC
Mission
Defense Early Warn
Bus & Motor
MIDAS, Unknown motor
Mass
~1,543 kg wet, ~840 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Cyl, 4.5 m
Radar Cross Section
11.475 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 1 day ago
TLE from 1 day ago
0 MIDAS 5 (STRONGBACK)
1 00271U 62010A 25260.19394558 .00000000 00000-0 -77595-3 0 9995
2 00271 86.6809 355.5388 0327662 5.0581 355.3510 9.41307194179985Epoch: 2025-09-17T04:39Z
TLE epoch observation values (Epoch: 2025-09-17T04:39:16.898Z)
Latitude
0.00004°
Longitude
-70.65501°
Altitude
2,789.802 km
Speed
6.701 km/s
True Right ascension
23h 42m 09s
True Declination
0° 00' 00"
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
05:39:55
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
3,404.988 km
Perigee altitude
2,784.216 km
Semi-major axis
9,472.739 km
Eccentricity
0.03277
Inclination
86.6809°
RAAN
355.5388°
Arg. of periapsis
5.0581°
True anomaly
355.03375°
Mean anomaly
355.351°
Eccentric anomaly
355.1937°
Mean motion
2.35413 °/min
Orbital period
152.92 mins
BSTAR
-0.00077595
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Other satellites on launch #10 in the year 1962 (1962-04-09 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.MIDAS 5 (STRONGBACK) 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. |
|---|---|---|---|---|---|---|---|
| 32 mins | 2025-09-18 17:03:37.572Z | 4.488° NNE | 2025-09-18 17:19:37.572Z | 80.514° E | 37.358° | 2025-09-18 17:35:37.572Z | 149.712° SSE |
| 30 mins | 2025-09-18 19:38:37.572Z | 348.122° N | 2025-09-18 19:52:37.572Z | 279.627° WNW | 38.183° | 2025-09-18 20:08:37.572Z | 212.821° SW |
| 24 mins | 2025-09-19 05:12:37.572Z | 132.59° SE | 2025-09-19 05:23:37.572Z | 75.806° E | 32.513° | 2025-09-19 05:36:37.572Z | 13.51° NNE |
| 27 mins | 2025-09-19 07:43:37.572Z | 205.156° SW | 2025-09-19 07:56:37.572Z | 284.818° WNW | 39.91° | 2025-09-19 08:10:37.572Z | 356.805° N |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
Click to sort rows by RSO header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Type header in ascending order | Click to sort rows by Inclination Δ header in ascending order | Click to sort rows by RAAN Δ header in ascending order | Click to sort rows by Coplanar Angle header in ascending order | Click to sort rows by SMA Δ header in ascending order | Click to sort rows by Orbital period header in ascending order | Click to sort rows by <5km Md TCA header in ascending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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