BLOCK DM-SL R/B, 28138
Orbit data source: Space-Track
BLOCK DM-SL R/B, 28138 is space debris in HEO originally from a launch on Sun, 11 Jan 2004 UTC launched from the Sea Launch (SEAL). Debris objects in space refer to the collection of defunct objects orbiting the Earth. Examples of debris include non-operational satellites, rocket bodies, and fragments generated from explosions, collisions, or faulty payload assembly.
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28138 intel report (Beta)
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Edit Public Description
Identifier
Orbit
Country
Unknown / SEALRelated business
Manufacturer
RKKE
Mission
Spacecraft
Bus & Motor
BLOK DM2, 11D58M
Mass
~3,210 kg wet, 3,210 kg dry
Launch date (UTC)
Launch vehicle
Unknown
Launch site
Object type
Shape & HBR
Cyl, 3.1 m
Radar Cross Section
23.684 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 14 hours ago
TLE from 14 hours ago
0 BLOCK DM-SL R/B
1 28138U 04001B 25260.86757669 .00000117 00000-0 21540-2 0 9999
2 28138 0.6738 29.0061 7147716 225.7700 22.2463 2.24733239178080Epoch: 2025-09-17T20:49Z
TLE epoch observation values (Epoch: 2025-09-17T20:49:18.626Z)
Latitude
-0.33442°
Longitude
50.63682°
Altitude
8,488.089 km
Speed
6.118 km/s
True Right ascension
00h 00m 00s
True Declination
0° 20' 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
03:37:02
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
35,848.752 km
Perigee altitude
645.719 km
Semi-major axis
24,625.372 km
Eccentricity
0.71477
Inclination
0.6738°
RAAN
29.0061°
Arg. of periapsis
225.77°
True anomaly
105.40307°
Mean anomaly
22.2463°
Eccentric anomaly
56.32924°
Mean motion
0.56165 °/min
Orbital period
640.96 mins
BSTAR
0.002154
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Other satellites on launch #1 in the year 2004 (2004-01-11 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.BLOCK DM-SL R/B 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. |
|---|---|---|---|---|---|---|---|
| 380 mins | 2025-09-18 10:47:04.027Z | 165.846° S | 2025-09-18 12:13:04.027Z | 180.817° SSW | 34.967° | 2025-09-18 17:07:04.027Z | 146.512° SSE |
| 374 mins | 2025-09-19 04:33:04.027Z | 164.236° S | 2025-09-19 10:47:04.027Z | 137.183° SSE | 29.51° | 2025-09-19 10:47:04.027Z | 137.183° SSE |
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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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 |
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