DELTA 1 DEB, 21471
Orbit data source: Space-Track
DELTA 1 DEB, 21471 is space debris in SSO originally from a launch on Thu, 12 Jun 1975 UTC launched from the Air Force Western Test Range (AFWTR). 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
Embed this page
Focus sentinelFocus sentinel
21471 intel report (Beta)
Focus sentinelFocus sentinel
Create New Watchlist
Focus sentinelFocus sentinel
Edit Public Description
Identifier
Orbit
Country
USRelated business
Manufacturer
Unknown
Mission
Spacecraft
Bus & Motor
Unknown
Mass
Unknown
Launch date (UTC)
Launch vehicle
Unknown
Launch site
Object type
Shape & HBR
Unknown shape, 0.1 m
Radar Cross Section
Small (<0.1 m²)
Expand to show TLE details & historyLast TLE update: 16 hours ago
TLE from 16 hours ago
0 DELTA 1 DEB
1 21471U 75052FF 25299.94570742 .00000821 00000-0 99115-3 0 9998
2 21471 99.9254 89.1905 0249136 212.8451 276.2975 13.57437299704802Epoch: 2025-10-26T22:41Z
TLE epoch observation values (Epoch: 2025-10-26T22:41:49.121Z)
Latitude
52.65022°
Longitude
-93.63336°
Altitude
1,037.767 km
Speed
7.346 km/s
True Right ascension
18h 49m 30s
True Declination
52° 29' 26"
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
10:04:28
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
1,227.191 km
Perigee altitude
857.451 km
Semi-major axis
7,420.458 km
Eccentricity
0.02491
Inclination
99.9254°
RAAN
89.1905°
Arg. of periapsis
212.8451°
True anomaly
273.45129°
Mean anomaly
276.2975°
Eccentric anomaly
274.87522°
Mean motion
3.39545 °/min
Orbital period
106.02 mins
BSTAR
0.00099115
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 #52 in the year 1975 (1975-06-12 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.DELTA 1 DEB 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. |
|---|---|---|---|---|---|---|---|
| 7 mins | 2025-10-27 21:42:06.176Z | 49.918° ENE | 2025-10-27 21:46:06.176Z | 92.352° ESE | 18.326° | 2025-10-27 21:49:06.176Z | 127.261° SE |
| 10 mins | 2025-10-27 23:26:06.176Z | 5.807° NNE | 2025-10-27 23:31:06.176Z | 291.762° WNW | 41.177° | 2025-10-27 23:36:06.176Z | 213.309° SW |
| 4 mins | 2025-10-28 07:54:06.176Z | 67.117° ENE | 2025-10-28 07:56:06.176Z | 49.887° ENE | 12.832° | 2025-10-28 07:58:06.176Z | 32.928° NE |
| 13 mins | 2025-10-28 09:33:06.176Z | 147.689° SSE | 2025-10-28 09:39:06.176Z | 67.317° ENE | 42.249° | 2025-10-28 09:46:06.176Z | 351.095° N |
| 9 mins | 2025-10-28 11:20:06.176Z | 226.965° WSW | 2025-10-28 11:24:06.176Z | 268.781° W | 22.635° | 2025-10-28 11:29:06.176Z | 315.579° NNW |
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 |
|---|