DELTA 1 DEB, 21276

Orbit data source: Space-Track

DELTA 1 DEB, 21276 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.

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Iframe URL

https://www.satcat.com/sats-embedded/21276?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21276, 1975-052M

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, 1.2 m

Radar Cross Section

Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 19 hours ago

TLE from 19 hours ago

0 DELTA 1 DEB
1 21276U 75052M   25346.30591642  .00000034  00000-0  15192-3 0  9995
2 21276 100.0228 244.2853 0045759 194.6475 280.5284 13.35556014686784

Epoch: 2025-12-12T07:20Z

TLE epoch observation values (Epoch: 2025-12-12T07:20:31.178Z)

Latitude

63.5885°

Longitude

-106.35948°

Altitude

1,130.602 km

Speed

7.296 km/s

True Right ascension

05h 40m 04s

True Declination

63° 27' 29"

Sunlit

Object was in full shadow 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

00:31:17

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,157.542 km

Perigee altitude

1,088.891 km

Semi-major axis

7,501.354 km

Eccentricity

0.00458

Inclination

100.0228°

RAAN

244.2853°

Arg. of periapsis

194.6475°

True anomaly

280.01234°

Mean anomaly

280.5284°

Eccentric anomaly

280.27042°

Mean motion

3.34067 °/min

Orbital period

107.76 mins

BSTAR

0.00015192

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

DELTA 1 DEB, 21474 (Decayed)

DELTA 1 DEB, 21522 (Decayed)

DELTA 1 DEB, 42658

DELTA 1 DEB, 21542

DELTA 1 DEB, 21274 (Decayed)

DELTA 1 DEB, 21518 (Decayed)

DELTA 1 DEB, 21440 (Decayed)

DELTA 1 DEB, 21681 (Decayed)

DELTA 1 DEB, 21346 (Decayed)

DELTA 1 DEB, 21456 (Decayed)

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DELTA 1 DEB 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.
9 mins	2025-12-13 04:58:41.753Z	47.945° ENE	2025-12-13 05:02:41.753Z	87.154° E	20.258°	2025-12-13 05:07:41.753Z	138.729° SSE
11 mins	2025-12-13 06:44:41.753Z	5.623° NNE	2025-12-13 06:49:41.753Z	296.128° NW	41.546°	2025-12-13 06:55:41.753Z	212.48° SW
5 mins	2025-12-13 15:20:41.753Z	74.657° E	2025-12-13 15:22:41.753Z	56.248° ENE	14.142°	2025-12-13 15:25:41.753Z	28.814° NE
12 mins	2025-12-13 17:02:41.753Z	155.215° SSE	2025-12-13 17:07:41.753Z	103.417° ESE	44.031°	2025-12-13 17:14:41.753Z	348.047° N
7 mins	2025-12-13 18:51:41.753Z	237.583° WSW	2025-12-13 18:54:41.753Z	266.694° W	17.221°	2025-12-13 18:58:41.753Z	304.742° NW

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Co-orbital & Co-planar RSOs

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

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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings

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Check out DELTA 1 DEB, 21276 on other resources

View DELTA 1 DEB, 21276 on Heavens-Above

View DELTA 1 DEB, 21276 on Keep Track

View DELTA 1 DEB, 21276 on Celestrak

View DELTA 1 DEB, 21276 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, 21276

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 19 hours ago

TLE from 19 hours ago

TLE epoch observation values (Epoch: 2025-12-12T07:20:31.178Z)

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, 21276 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 19 hours ago