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: 13 hours ago

TLE from 13 hours ago

0 DELTA 1 DEB
1 21277U 75052N   26082.37881409  .00000122  00000-0  38607-3 0  9998
2 21277  99.7315 222.1089 0133263  68.3956 356.0156 13.19247074678672

Epoch: 2026-03-23T09:05Z

TLE epoch observation values (Epoch: 2026-03-23T09:05:29.537Z)

Latitude

62.73045°

Longitude

-114.46515°

Altitude

1,097.685 km

Speed

7.358 km/s

True Right ascension

13h 31m 07s

True Declination

62° 35' 47"

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

03:05:55

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,285.729 km

Perigee altitude

1,084.153 km

Semi-major axis

7,563.078 km

Eccentricity

0.01333

Inclination

99.7315°

RAAN

222.1089°

Arg. of periapsis

68.3956°

True anomaly

355.9077°

Mean anomaly

356.0156°

Eccentric anomaly

355.96183°

Mean motion

3.29986 °/min

Orbital period

109.1 mins

BSTAR

0.00038607

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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.
13 mins	2026-03-23 22:05:47.163Z	16.474° NNE	2026-03-23 22:12:47.163Z	159.031° S	44.362°	2026-03-23 22:18:47.163Z	193.09° SSW
6 mins	2026-03-23 23:56:47.163Z	326.564° NNW	2026-03-23 23:58:47.163Z	305.961° NW	17.53°	2026-03-24 00:02:47.163Z	267.373° W
11 mins	2026-03-24 08:33:47.163Z	138.704° SSE	2026-03-24 08:38:47.163Z	68.24° E	38.429°	2026-03-24 08:44:47.163Z	355.797° N
9 mins	2026-03-24 10:22:47.163Z	221.834° SW	2026-03-24 10:26:47.163Z	267.967° W	23.247°	2026-03-24 10:31:47.163Z	318.765° NNW
12 mins	2026-03-24 21:46:47.163Z	25.063° NE	2026-03-24 21:52:47.163Z	120.905° SE	40.693°	2026-03-24 21:58:47.163Z	180.784° SSW

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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: 2026-03-23T09:05:29.537Z)

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