DELTA 1 DEB, 21288

Orbit data source: Space-Track

DELTA 1 DEB, 21288 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/21288?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21288, 1975-052Z

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, 0.3 m

Radar Cross Section

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 9 hours ago

TLE from 9 hours ago

0 DELTA 1 DEB
1 21288U 75052Z   26182.64669250 -.00000058  00000-0 -85492-4 0  9994
2 21288  99.6906 109.7000 0356867 154.0673 327.4268 12.75775105636872

Epoch: 2026-07-01T15:31Z

TLE epoch observation values (Epoch: 2026-07-01T15:31:14.231Z)

Latitude

59.45647°

Longitude

153.92325°

Altitude

1,138.765 km

Speed

7.397 km/s

True Right ascension

20h 25m 43s

True Declination

59° 18' 48"

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

11:54:22

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,631.902 km

Perigee altitude

1,079.897 km

Semi-major axis

7,734.037 km

Eccentricity

0.03569

Inclination

99.6906°

RAAN

109.7°

Arg. of periapsis

154.0673°

True anomaly

325.13992°

Mean anomaly

327.4268°

Eccentric anomaly

326.29208°

Mean motion

3.19105 °/min

Orbital period

112.82 mins

BSTAR

-0.000085492

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

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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.
7 mins	2026-07-02 06:37:36.614Z	53.989° ENE	2026-07-02 06:41:36.614Z	94.748° ESE	17.415°	2026-07-02 06:44:36.614Z	125.518° SE
11 mins	2026-07-02 08:27:36.614Z	7.259° NNE	2026-07-02 08:33:36.614Z	265.185° W	41.793°	2026-07-02 08:38:36.614Z	210.538° SW
11 mins	2026-07-02 17:24:36.614Z	105.405° ESE	2026-07-02 17:30:36.614Z	56.056° ENE	22.585°	2026-07-02 17:35:36.614Z	13.097° NNE
15 mins	2026-07-02 19:13:36.614Z	171.343° S	2026-07-02 19:20:36.614Z	246.364° WSW	44.154°	2026-07-02 19:28:36.614Z	342.115° N
5 mins	2026-07-02 21:10:36.614Z	255.507° W	2026-07-02 21:12:36.614Z	270.408° WNW	13.353°	2026-07-02 21:15:36.614Z	293.101° 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, 21288 on other resources

View DELTA 1 DEB, 21288 on Heavens-Above

View DELTA 1 DEB, 21288 on Keep Track

View DELTA 1 DEB, 21288 on Celestrak

View DELTA 1 DEB, 21288 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, 21288

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 9 hours ago

TLE from 9 hours ago

TLE epoch observation values (Epoch: 2026-07-01T15:31:14.231Z)

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, 21288 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 9 hours ago