DELTA 1 DEB, 21457

Orbit data source: Space-Track

DELTA 1 DEB, 21457 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/21457?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/21457?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

21457, 1975-052ER

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: 7 hours ago

TLE from 7 hours ago

0 DELTA 1 DEB
1 21457U 75052ER  26002.72162622  .00001511  00000-0  21211-2 0  9993
2 21457  99.9603 277.5972 0282960 202.9179 214.7822 13.43818837680100

Epoch: 2026-01-02T17:19Z

TLE epoch observation values (Epoch: 2026-01-02T17:19:08.505Z)

Latitude

54.74263°

Longitude

-98.85666°

Altitude

1,279.619 km

Speed

7.136 km/s

True Right ascension

17h 33m 08s

True Declination

54° 35' 29"

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

00:02:05

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,303.794 km

Perigee altitude

881.021 km

Semi-major axis

7,470.544 km

Eccentricity

0.0283

Inclination

99.9603°

RAAN

277.5972°

Arg. of periapsis

202.9179°

True anomaly

212.98507°

Mean anomaly

214.7822°

Eccentric anomaly

213.87847°

Mean motion

3.36136 °/min

Orbital period

107.1 mins

BSTAR

0.0021211

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, 42660 (Decayed)

DELTA 1 DEB, 21910

DELTA 1 DEB, 21518 (Decayed)

DELTA 1 DEB, 42639

DELTA 1 DEB, 42641

DELTA 1 DEB, 21601

DELTA 1 DEB, 21687 (Decayed)

DELTA 1 DEB, 21675 (Decayed)

DELTA 1 DEB, 21517 (Decayed)

DELTA 1 DEB, 21510 (Decayed)

DELTA 1 DEB, 21521 (Decayed)

DELTA 1 DEB, 37629 (Decayed)

DELTA 1 DEB, 21969

DELTA 1 DEB, 26830

DELTA 1 DEB, 21359 (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.
10 mins	2026-01-03 06:09:59.736Z	35.915° NE	2026-01-03 06:14:59.736Z	88.838° E	26.565°	2026-01-03 06:19:59.736Z	152.88° SSE
9 mins	2026-01-03 07:56:59.736Z	353.099° N	2026-01-03 08:00:59.736Z	296.645° NW	32.932°	2026-01-03 08:05:59.736Z	229.62° WSW
9 mins	2026-01-03 16:25:59.736Z	98.434° ESE	2026-01-03 16:29:59.736Z	63.431° ENE	20.621°	2026-01-03 16:34:59.736Z	16.797° NNE
13 mins	2026-01-03 18:08:59.736Z	167.818° S	2026-01-03 18:14:59.736Z	225.565° WSW	44.604°	2026-01-03 18:21:59.736Z	342.595° N
6 mins	2026-01-03 19:58:59.736Z	249.111° W	2026-01-03 20:01:59.736Z	274.293° WNW	14.262°	2026-01-03 20:04:59.736Z	298.732° NW

Items per page:

1–5 of 5 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, 21457 on other resources

View DELTA 1 DEB, 21457 on Heavens-Above

View DELTA 1 DEB, 21457 on Keep Track

View DELTA 1 DEB, 21457 on Celestrak

View DELTA 1 DEB, 21457 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, 21457

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 7 hours ago

TLE from 7 hours ago

TLE epoch observation values (Epoch: 2026-01-02T17:19:08.505Z)

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, 21457 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 7 hours ago