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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ISO8601 Format

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   26242.31705590  .00000031  00000-0  16870-3 0  9993
2 21277  99.7560  10.3885 0133172  52.6495   2.8959 13.19288956699762

Epoch: 2026-08-30T07:36Z

TLE epoch observation values (Epoch: 2026-08-30T07:36:33.629Z)

Latitude

54.52852°

Longitude

-96.15629°

Altitude

1,095.687 km

Speed

7.358 km/s

True Right ascension

23h 45m 59s

True Declination

54° 22' 23"

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

05:52:33

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,285.499 km

Perigee altitude

1,084.065 km

Semi-major axis

7,562.919 km

Eccentricity

0.01332

Inclination

99.756°

RAAN

10.3885°

Arg. of periapsis

52.6495°

True anomaly

2.9743°

Mean anomaly

2.8959°

Eccentric anomaly

2.93497°

Mean motion

3.29996 °/min

Orbital period

109.09 mins

BSTAR

0.0001687

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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.
12 mins	2026-08-30 20:40:51.980Z	33.832° NE	2026-08-30 20:46:51.980Z	102.487° ESE	31.693°	2026-08-30 20:52:51.980Z	163.082° S
11 mins	2026-08-30 22:28:51.980Z	355.702° N	2026-08-30 22:33:51.980Z	298.992° NW	32.559°	2026-08-30 22:39:51.980Z	231.184° WSW
8 mins	2026-08-31 07:09:51.980Z	101.66° ESE	2026-08-31 07:13:51.980Z	55.968° ENE	22.111°	2026-08-31 07:17:51.980Z	14.568° NNE
11 mins	2026-08-31 08:55:51.980Z	183.833° SSW	2026-08-31 09:00:51.980Z	268.458° W	40.499°	2026-08-31 09:06:51.980Z	337.028° NNW

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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: 7 hours ago

TLE from 7 hours ago

TLE epoch observation values (Epoch: 2026-08-30T07:36:33.629Z)

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