DELTA 1 DEB, 21444

Orbit data source: Space-Track

DELTA 1 DEB, 21444 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.

Loading next visibility...

Iframe embed code

<iframe src="https://www.satcat.com/sats-embedded/21444?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

Iframe URL

https://www.satcat.com/sats-embedded/21444?theme=dark&initialShowStats=false

Optional Secondary NORAD IDs

Max 10 NORAD IDs; Separated by commas

Initial load time (optional)

ISO8601 Format

TLE date request (optional)

ISO8601 Format

Identifier

21444, 1975-052EC

Orbit

SSO

Country

Related business

National Aeronautics and Space Administration (NASA) (US)

Manufacturer

Unknown

Mission

Spacecraft

Bus & Motor

Unknown

Mass

Unknown

Launch date (UTC)

1975-06-12 (51 years ago)

Launch vehicle

Unknown

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Unknown shape, 0.1 m

Radar Cross Section

Small (<0.1 m²)

Expand to show TLE details & history
Last TLE update: 2 days ago

TLE from 2 days ago

0 DELTA 1 DEB
1 21444U 75052EC  25348.48645598  .00000526  00000-0  17124-2 0  9995
2 21444  99.6946 277.7766 0264821 112.9546 317.0439 12.94757520632980

Epoch: 2025-12-14T11:40Z

TLE epoch observation values (Epoch: 2025-12-14T11:40:29.796Z)

Latitude

66.03099°

Longitude

-3.22233°

Altitude

1,148.083 km

Speed

7.354 km/s

True Right ascension

17h 01m 12s

True Declination

65° 54' 35"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

Unknown

Longitude

Unknown

Altitude

Unknown

Speed

Unknown

Apparent Right ascension

Unknown

Apparent Declination

Unknown

Sunlit

N/A

Visualization observer readout

Local Sidereal Time

03:26:42

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,482.878 km

Perigee altitude

1,077.267 km

Semi-major axis

7,658.21 km

Eccentricity

0.02648

Inclination

99.6946°

RAAN

277.7766°

Arg. of periapsis

112.9546°

True anomaly

314.92519°

Mean anomaly

317.0439°

Eccentric anomaly

315.98969°

Mean motion

3.23856 °/min

Orbital period

111.16 mins

BSTAR

0.0017124

Loading maneuver chart data...

Computing Atmospheric mass density...

Loading historical data...

Other satellites on launch #52 in the year 1975 (1975-06-12 UTC)

DELTA 1 DEB, 21431 (Decayed)

DELTA 1 DEB, 7965 (Decayed)

DELTA 1 DEB, 21539 (Decayed)

DELTA 1 DEB, 21683 (Decayed)

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.

Click here to try in Sandbox

DELTA 1 DEB Visibility forecast

Loading observer location...
Set 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.
5 mins	2025-12-16 06:38:49.577Z	64.03° ENE	2025-12-16 06:41:49.577Z	91.828° ESE	12.972°	2025-12-16 06:43:49.577Z	110.317° ESE
11 mins	2025-12-16 08:26:49.577Z	14.033° NNE	2025-12-16 08:31:49.577Z	337.442° NNW	44.932°	2025-12-16 08:37:49.577Z	197.931° SSW
5 mins	2025-12-16 10:18:49.577Z	322.445° NNW	2025-12-16 10:20:49.577Z	302.419° NW	14.313°	2025-12-16 10:23:49.577Z	274.577° WNW
4 mins	2025-12-16 17:20:49.577Z	66.105° ENE	2025-12-16 17:21:49.577Z	57.088° ENE	12.87°	2025-12-16 17:24:49.577Z	30.405° NE
12 mins	2025-12-16 19:04:49.577Z	153.956° SSE	2025-12-16 19:10:49.577Z	58.446° ENE	43.841°	2025-12-16 19:16:49.577Z	349.727° N
8 mins	2025-12-16 20:56:49.577Z	231.961° WSW	2025-12-16 21:00:49.577Z	268.852° W	17.897°	2025-12-16 21:04:49.577Z	306.296° NW

Items per page:

1–6 of 6 items

of 1 page

Co-orbital & Co-planar RSOs

Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions

Please sign-in to view Co-orbital & Co-planar RSOs.

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

Check out DELTA 1 DEB, 21444 on other resources

View DELTA 1 DEB, 21444 on Heavens-Above

View DELTA 1 DEB, 21444 on Keep Track

View DELTA 1 DEB, 21444 on Celestrak

View DELTA 1 DEB, 21444 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.

DELTA 1 DEB, 21444

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 2 days ago

TLE from 2 days ago

TLE epoch observation values (Epoch: 2025-12-14T11:40:29.796Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #52 in the year 1975 (1975-06-12 UTC)

DELTA 1 DEB Visibility forecast

Co-orbital & Co-planar RSOs

Check out DELTA 1 DEB, 21444 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 2 days ago