SL-14 R/B, 21305
Orbit data source: Space-Track
SL-14 R/B, 21305 is space debris in LEO originally from a launch on Thu, 16 May 1991 UTC launched from the Plesetsk Missile And Space Complex (PKMTR). 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.
Focus sentinelFocus sentinel
Request partner network tasking
Focus sentinelFocus sentinel
Embed this page
Focus sentinelFocus sentinel
21305 intel report (Beta)
Focus sentinelFocus sentinel
Edit Public Description
Focus sentinelFocus sentinel
Edit Sat Name
Focus sentinelFocus sentinel
Create New Watchlist
Identifier
Orbit
Country
CISRelated business
Manufacturer
Yuzhnoe
Mission
Spacecraft
Bus & Motor
S5M, Unknown motor
Mass
1,600 kg wet, 1,600 kg dry
Launch date (UTC)
Launch vehicle
Unknown
Launch site
Object type
Shape & HBR
Cyl, 1.4 m
Radar Cross Section
7.351 m², Large (>1 m²)
Expand to show TLE details & historyLast TLE update: 2 days ago
TLE from 2 days ago
0 SL-14 R/B
1 21305U 91033G 26171.44632402 .00000021 00000-0 63617-4 0 9999
2 21305 82.5656 66.1780 0038479 20.6513 152.0572 12.54826479607408Epoch: 2026-06-20T10:42Z
TLE epoch observation values (Epoch: 2026-06-20T10:42:42.395Z)
Latitude
6.95775°
Longitude
175.93257°
Altitude
1,473.081 km
Speed
7.115 km/s
True Right ascension
16h 21m 04s
True Declination
6° 55' 13"
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
00:51:07
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,471.793 km
Perigee altitude
1,411.614 km
Semi-major axis
7,819.841 km
Eccentricity
0.00385
Inclination
82.5656°
RAAN
66.178°
Arg. of periapsis
20.6513°
True anomaly
152.26294°
Mean anomaly
152.0572°
Eccentric anomaly
152.16016°
Mean motion
3.13867 °/min
Orbital period
114.7 mins
BSTAR
0.000063617
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 #33 in the year 1991 (1991-05-16 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.SL-14 R/B 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. |
|---|---|---|---|---|---|---|---|
| 6 mins | 2026-06-22 15:32:34.037Z | 98.88° ESE | 2026-06-22 15:35:34.037Z | 76.989° E | 12.861° | 2026-06-22 15:38:34.037Z | 54.757° ENE |
| 14 mins | 2026-06-22 17:23:34.037Z | 177.994° S | 2026-06-22 17:29:34.037Z | 125.465° SE | 44.252° | 2026-06-22 17:37:34.037Z | 10.556° NNE |
| 9 mins | 2026-06-22 19:22:34.037Z | 260.42° W | 2026-06-22 19:26:34.037Z | 294.515° NW | 19.626° | 2026-06-22 19:31:34.037Z | 335.252° NNW |
| 13 mins | 2026-06-23 03:28:34.037Z | 14.646° NNE | 2026-06-23 03:34:34.037Z | 69.09° E | 29.278° | 2026-06-23 03:41:34.037Z | 130.971° SE |
| 15 mins | 2026-06-23 05:23:34.037Z | 340.042° N | 2026-06-23 05:30:34.037Z | 272.764° WNW | 37.806° | 2026-06-23 05:38:34.037Z | 199.145° SSW |
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 |
|---|
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 descending order |
|---|