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: 13 hours ago

TLE from 13 hours ago

0 DELTA 1 DEB
1 21277U 75052N   26021.32108175  .00000269  00000-0  74215-3 0  9995
2 21277  99.7215 165.6026 0133362 211.2060 178.0180 13.19226034670627

Epoch: 2026-01-21T07:42Z

TLE epoch observation values (Epoch: 2026-01-21T07:42:21.463Z)

Latitude

28.85983°

Longitude

-76.06772°

Altitude

1,291.966 km

Speed

7.165 km/s

True Right ascension

10h 40m 50s

True Declination

28° 43' 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

21:25:31

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,285.885 km

Perigee altitude

1,084.157 km

Semi-major axis

7,563.158 km

Eccentricity

0.01334

Inclination

99.7215°

RAAN

165.6026°

Arg. of periapsis

211.206°

True anomaly

178.06999°

Mean anomaly

178.018°

Eccentric anomaly

178.04408°

Mean motion

3.29981 °/min

Orbital period

109.1 mins

BSTAR

0.00074215

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

DELTA 1 DEB, 7965 (Decayed)

DELTA 1 DEB, 21340 (Decayed)

DELTA 1 DEB, 21600 (Decayed)

DELTA 1 DEB, 21335 (Decayed)

DELTA 1 DEB, 21683 (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.
8 mins	2026-01-21 20:57:09.538Z	50.398° ENE	2026-01-21 21:01:09.538Z	87.953° E	18.53°	2026-01-21 21:05:09.538Z	128.193° SE
12 mins	2026-01-21 22:44:09.538Z	8.244° NNE	2026-01-21 22:49:09.538Z	313.869° NW	42.908°	2026-01-21 22:56:09.538Z	207.013° SW
4 mins	2026-01-22 00:34:09.538Z	322.956° NNW	2026-01-22 00:36:09.538Z	305.091° NW	12.635°	2026-01-22 00:38:09.538Z	287.561° WNW
6 mins	2026-01-22 07:26:09.538Z	76.025° E	2026-01-22 07:29:09.538Z	49.651° ENE	15.346°	2026-01-22 07:32:09.538Z	24.605° NE
13 mins	2026-01-22 09:09:09.538Z	154.912° SSE	2026-01-22 09:15:09.538Z	62.491° ENE	44.225°	2026-01-22 09:22:09.538Z	348.6° N
9 mins	2026-01-22 10:59:09.538Z	232.309° WSW	2026-01-22 11:03:09.538Z	268.738° W	19.206°	2026-01-22 11:08:09.538Z	312.095° 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, 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: 13 hours ago

TLE from 13 hours ago

TLE epoch observation values (Epoch: 2026-01-21T07:42:21.463Z)

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: 13 hours ago