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.
Focus sentinelFocus sentinel
Embed this page
Focus sentinelFocus sentinel
163 intel report (Beta)
Focus sentinelFocus sentinel
Create New Watchlist
Focus sentinelFocus sentinel
Edit Public Description
Identifier
Orbit
Country
USRelated business
Manufacturer
LMSC
Mission
Defense Early Warn
Bus & Motor
MIDAS, Unknown motor
Mass
~1,540 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 3
1 00163U 61018A 25260.18505934 .00000005 00000-0 13033-2 0 9993
2 00163 91.1088 193.5088 0100877 94.5493 266.6910 8.91838240 89673Epoch: 2025-09-17T04:26Z
TLE epoch observation values (Epoch: 2025-09-17T04:26:29.126Z)
Latitude
-0.00009°
Longitude
130.5228°
Altitude
3,453.071 km
Speed
6.366 km/s
True Right ascension
12h 54m 02s
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
22:55:19
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
3,540.944 km
Perigee altitude
3,342.821 km
Semi-major axis
9,820.02 km
Eccentricity
0.01009
Inclination
91.1088°
RAAN
193.5088°
Arg. of periapsis
94.5493°
True anomaly
265.53788°
Mean anomaly
266.691°
Eccentric anomaly
266.11435°
Mean motion
2.23036 °/min
Orbital period
161.41 mins
BSTAR
0.0013033
Loading maneuver chart data...
Computing Atmospheric mass density...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Loading historical data...
Other satellites on launch #18 in the year 1961 (1961-07-12 UTC)
Did you know?
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
Loading observer location...
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. |
|---|---|---|---|---|---|---|---|
| 33 mins | 2025-09-18 08:07:07.593Z | 1.56° NNE | 2025-09-18 08:23:07.593Z | 291.934° WNW | 44.679° | 2025-09-18 08:40:07.593Z | 194.412° SSW |
| 20 mins | 2025-09-18 10:50:07.593Z | 344.107° N | 2025-09-18 11:00:07.593Z | 305.423° NW | 19.659° | 2025-09-18 11:10:07.593Z | 267.723° W |
| 29 mins | 2025-09-18 18:13:07.593Z | 131.591° SE | 2025-09-18 18:27:07.593Z | 70.555° E | 35.293° | 2025-09-18 18:42:07.593Z | 5.287° NNE |
| 32 mins | 2025-09-18 20:51:07.593Z | 200.294° SSW | 2025-09-18 21:07:07.593Z | 276.299° WNW | 39.278° | 2025-09-18 21:23:07.593Z | 350.762° N |
| 25 mins | 2025-09-19 05:41:07.593Z | 17.251° NNE | 2025-09-19 05:55:07.593Z | 76.112° E | 27.624° | 2025-09-19 06:06:07.593Z | 124.388° SE |
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 |
|---|
CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
Authenticating...
Click to sort rows by Secondary header in ascending order | Click to sort rows by Secondary name header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Owner header in ascending order | Click to sort rows by Obj. Type header in ascending order | Click to sort rows by Miss dist. header in ascending order | Click to sort rows by Rel. speed header in ascending order | Click to sort rows by Apr. angle header in ascending order | Click to sort rows by TCA header in ascending order |
|---|