DELTA 1 DEB, 21277

Orbit data source: Space-Track

DELTA 1 DEB, 21277 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/21277?theme=dark&initialShowStats=false

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Identifier

21277, 1975-052N

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, 0.4 m

Radar Cross Section

Medium (>0.1 m² and <1 m²)

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

TLE from 7 hours ago

0 DELTA 1 DEB
1 21277U 75052N   26182.63694773  .00000123  00000-0  39153-3 0  9992
2 21277  99.7484 315.0247 0133180 191.9624 237.5085 13.19279788691890

Epoch: 2026-07-01T15:17Z

TLE epoch observation values (Epoch: 2026-07-01T15:17:12.283Z)

Latitude

66.29494°

Longitude

143.1206°

Altitude

1,253.925 km

Speed

7.208 km/s

True Right ascension

19h 28m 27s

True Declination

66° 10' 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

10:21:38

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,285.54 km

Perigee altitude

1,084.093 km

Semi-major axis

7,562.954 km

Eccentricity

0.01332

Inclination

99.7484°

RAAN

315.0247°

Arg. of periapsis

191.9624°

True anomaly

236.23277°

Mean anomaly

237.5085°

Eccentric anomaly

236.86949°

Mean motion

3.29994 °/min

Orbital period

109.09 mins

BSTAR

0.00039153

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

DELTA 1 DEB, 21597 (Decayed)

DELTA 1 DEB, 21562 (Decayed)

DELTA 1 DEB, 35533 (Decayed)

DELTA 1 DEB, 21274 (Decayed)

DELTA 1 DEB, 37630 (Decayed)

DELTA 1 DEB, 21673 (Decayed)

DELTA 1 DEB, 21679 (Decayed)

DELTA 1 DEB, 21381 (Decayed)

DELTA 1 DEB, 21564 (Decayed)

DELTA 1 DEB, 21382 (Decayed)

DELTA 1 DEB, 21343 (Decayed)

DELTA 1 DEB, 21369 (Decayed)

DELTA 1 DEB, 21495 (Decayed)

DELTA 1 DEB, 21318 (Decayed)

DELTA 1 DEB, 21544 (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.
11 mins	2026-07-01 22:49:08.174Z	354.361° N	2026-07-01 22:54:08.174Z	300.054° NW	29.802°	2026-07-01 23:00:08.174Z	234.322° WSW
11 mins	2026-07-02 07:28:08.174Z	112.617° SE	2026-07-02 07:33:08.174Z	62.7° ENE	26.715°	2026-07-02 07:39:08.174Z	6.098° NNE
13 mins	2026-07-02 09:14:08.174Z	184.042° SSW	2026-07-02 09:20:08.174Z	254.074° W	40°	2026-07-02 09:27:08.174Z	335.913° NNW
10 mins	2026-07-02 20:42:08.174Z	43.375° NE	2026-07-02 20:47:08.174Z	101.186° ESE	25.781°	2026-07-02 20:52:08.174Z	151.978° SSE
11 mins	2026-07-02 22:29:08.174Z	0.088° NNE	2026-07-02 22:34:08.174Z	301.582° NW	36.368°	2026-07-02 22:40:08.174Z	223.263° SW

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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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Check out DELTA 1 DEB, 21277 on other resources

View DELTA 1 DEB, 21277 on Heavens-Above

View DELTA 1 DEB, 21277 on Keep Track

View DELTA 1 DEB, 21277 on Celestrak

View DELTA 1 DEB, 21277 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, 21277

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: 2026-07-01T15:17:12.283Z)

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, 21277 on other resources

Documentation

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