MIDAS 3, 163
Orbit data source: Space-Track
MIDAS 3, 163 is a payload satellite owned by USAF SSD (US) in LEO that was launched on Wed, 12 Jul 1961 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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Identifier
Orbit
Country
USRelated business
Manufacturer
LMSC
Mission
Spacecraft
Bus & Motor
MIDAS, Unknown motor
Mass
~1,540 kg wet, 840 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: 20 hours ago
TLE from 20 hours ago
0 MIDAS 3
1 163U 61018A 26051.31974564 -.00000005 00000-0 -19480-2 0 9990
2 163 91.1110 200.1884 0100685 283.5248 75.4424 8.91838912103593Epoch: 2026-02-20T07:40Z
TLE epoch observation values (Epoch: 2026-02-20T07:40:26.023Z)
Latitude
0.00001°
Longitude
-65.17841°
Altitude
3,422.426 km
Speed
6.386 km/s
True Right ascension
13h 20m 45s
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
07:13:43
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
3,540.751 km
Perigee altitude
3,343.005 km
Semi-major axis
9,820.015 km
Eccentricity
0.01007
Inclination
91.111°
RAAN
200.1884°
Arg. of periapsis
283.5248°
True anomaly
76.5626°
Mean anomaly
75.4424°
Eccentric anomaly
76.00215°
Mean motion
2.23036 °/min
Orbital period
161.41 mins
BSTAR
-0.001948
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Other satellites on launch #18 in the year 1961 (1961-07-12 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 3 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. |
|---|---|---|---|---|---|---|---|
| 29 mins | 2026-02-21 08:00:47.760Z | 120.711° SE | 2026-02-21 08:14:47.760Z | 64.292° ENE | 30.87° | 2026-02-21 08:29:47.760Z | 6.153° NNE |
| 34 mins | 2026-02-21 10:36:47.760Z | 188.648° SSW | 2026-02-21 10:53:47.760Z | 277.351° WNW | 42.844° | 2026-02-21 11:10:47.760Z | 353.714° N |
| 14 mins | 2026-02-21 13:32:47.760Z | 279.148° WNW | 2026-02-21 13:39:47.760Z | 303.973° NW | 13.196° | 2026-02-21 13:46:47.760Z | 328.368° NNW |
| 25 mins | 2026-02-21 19:29:47.760Z | 22.155° NNE | 2026-02-21 19:41:47.760Z | 68.223° E | 23.042° | 2026-02-21 19:54:47.760Z | 118.073° SE |
| 34 mins | 2026-02-21 22:08:47.760Z | 2.365° NNE | 2026-02-21 22:24:47.760Z | 312.968° NW | 44.894° | 2026-02-21 22:42:47.760Z | 191.405° SSW |
| 23 mins | 2026-02-22 00:50:47.760Z | 346.207° N | 2026-02-22 01:01:47.760Z | 305.252° NW | 21.956° | 2026-02-22 01:13:47.760Z | 261.461° W |
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 descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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