DELTA 1 DEB, 10221

Orbit data source: Space-Track

DELTA 1 DEB, 10221 is space debris in LEO originally from a launch on Thu, 14 Jul 1977 UTC launched from the Air Force Eastern Test Range (AFETR). 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 src="https://www.satcat.com/sats-embedded/10221?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

Iframe URL

https://www.satcat.com/sats-embedded/10221?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

10221, 1977-065AY

Orbit

LEO

Country

Related business

National Aeronautics and Space Administration (NASA) (US)

Manufacturer

Unknown

Mission

Spacecraft

Bus & Motor

Unknown

Mass

Unknown

Launch date (UTC)

1977-07-14 (49 years ago)

Launch vehicle

Unknown

Launch site

Air Force Eastern Test Range (AFETR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Unknown shape, 0.1 m

Radar Cross Section

Small (<0.1 m²)

Expand to show TLE details & history
Last TLE update: 6 hours ago

TLE from 6 hours ago

0 DELTA 1 DEB
1 10221U 77065AY  26089.20598168  .00027147  00000-0  23534-2 0  9995
2 10221  29.0268  47.8526 0293954 358.0921   1.8543 14.68140598461038

Epoch: 2026-03-30T04:56Z

TLE epoch observation values (Epoch: 2026-03-30T04:56:36.817Z)

Latitude

0.00003°

Longitude

146.09839°

Altitude

458.439 km

Speed

7.751 km/s

True Right ascension

03h 11m 24s

True Declination

0° 00' 00"

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

15:58:43

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

878.279 km

Perigee altitude

463.851 km

Semi-major axis

7,049.202 km

Eccentricity

0.0294

Inclination

29.0268°

RAAN

47.8526°

Arg. of periapsis

358.0921°

True anomaly

1.96745°

Mean anomaly

1.8543°

Eccentric anomaly

1.91045°

Mean motion

3.66719 °/min

Orbital period

98.17 mins

BSTAR

0.0023534

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Other satellites on launch #65 in the year 1977 (1977-07-14 UTC)

DELTA 1 DEB, 10390 (Decayed)

DELTA 1 DEB, 10493 (Decayed)

DELTA 1 DEB, 10304 (Decayed)

DELTA 1 DEB, 10481 (Decayed)

DELTA 1 DEB, 10308 (Decayed)

DELTA 1 DEB, 10219 (Decayed)

DELTA 1 DEB, 10244 (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.
6 mins	2026-03-31 02:27:53.570Z	213.868° SW	2026-03-31 02:30:53.570Z	167.162° S	17.981°	2026-03-31 02:33:53.570Z	127.234° SE
5 mins	2026-03-31 04:11:53.570Z	219.216° SW	2026-03-31 04:13:53.570Z	188.168° SSW	19.289°	2026-03-31 04:16:53.570Z	146.028° SSE

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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, 10221 on other resources

View DELTA 1 DEB, 10221 on Heavens-Above

View DELTA 1 DEB, 10221 on Keep Track

View DELTA 1 DEB, 10221 on Celestrak

View DELTA 1 DEB, 10221 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, 10221

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 6 hours ago

TLE from 6 hours ago

TLE epoch observation values (Epoch: 2026-03-30T04:56:36.817Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #65 in the year 1977 (1977-07-14 UTC)

DELTA 1 DEB Visibility forecast

Co-orbital & Co-planar RSOs

Check out DELTA 1 DEB, 10221 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 6 hours ago