COSMOS 1238, 12138
Orbit data source: Space-Track
COSMOS 1238, 12138 is a payload satellite owned by PVO (CIS) in LEO that was launched on Fri, 16 Jan 1981 UTC via a KOSMOS 11K65M launch vehicle from the Plesetsk Missile And Space Complex (PKMTR). 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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12138 intel report (Beta)
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Identifier
Orbit
Country
CISRelated business
Manufacturer
Yuzhnoe
Mission
Spacecraft
Bus & Motor
VEKTOR, Unknown motor
Mass
570 kg wet, 570 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: 7 hours ago
TLE from 7 hours ago
0 COSMOS 1238
1 12138U 81003A 26095.26894988 .00002941 00000-0 19907-3 0 9998
2 12138 82.9537 276.0813 0638534 294.7451 58.8573 14.12593731259614Epoch: 2026-04-05T06:27Z
TLE epoch observation values (Epoch: 2026-04-05T06:27:17.269Z)
Latitude
-0.00008°
Longitude
-14.31746°
Altitude
637.391 km
Speed
7.651 km/s
True Right ascension
18h 24m 19s
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
19:20:19
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,308.975 km
Perigee altitude
386.201 km
Semi-major axis
7,225.725 km
Eccentricity
0.06385
Inclination
82.9537°
RAAN
276.0813°
Arg. of periapsis
294.7451°
True anomaly
65.37484°
Mean anomaly
58.8573°
Eccentric anomaly
62.09029°
Mean motion
3.53363 °/min
Orbital period
101.88 mins
BSTAR
0.00019907
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Other satellites on launch #3 in the year 1981 (1981-01-16 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.COSMOS 1238 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. |
|---|---|---|---|---|---|---|---|
| 8 mins | 2026-04-05 13:25:20.718Z | 244.17° WSW | 2026-04-05 13:27:20.718Z | 297.53° NW | 36.129° | 2026-04-05 13:33:20.718Z | 356.806° N |
| 10 mins | 2026-04-05 22:21:20.718Z | 25.42° NE | 2026-04-05 22:26:20.718Z | 68.892° E | 20.292° | 2026-04-05 22:31:20.718Z | 111.922° ESE |
| 13 mins | 2026-04-06 00:03:20.718Z | 350.163° N | 2026-04-06 00:09:20.718Z | 302.678° NW | 44.4° | 2026-04-06 00:16:20.718Z | 180.47° SSW |
| 6 mins | 2026-04-06 01:48:20.718Z | 306.48° NW | 2026-04-06 01:51:20.718Z | 281.914° WNW | 14.692° | 2026-04-06 01:54:20.718Z | 257.24° W |
| 7 mins | 2026-04-06 11:30:20.718Z | 112.421° ESE | 2026-04-06 11:33:20.718Z | 72.828° E | 21.34° | 2026-04-06 11:37:20.718Z | 34.723° NE |
| 10 mins | 2026-04-06 13:11:20.718Z | 215.607° SW | 2026-04-06 13:14:20.718Z | 266.302° W | 38.115° | 2026-04-06 13:21:20.718Z | 358.124° 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 descending order |
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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings
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