DELTA 1 R/B, 6921

Orbit data source: Space-Track

DELTA 1 R/B, 6921 is space debris in SSO originally from a launch on Tue, 06 Nov 1973 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/6921?theme=dark&initialShowStats=false

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ISO8601 Format

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ISO8601 Format

Identifier

6921, 1973-086B

Orbit

SSO

Country

Related business

National Aeronautics and Space Administration (NASA) (US)

Manufacturer

Aerojet

Mission

Spacecraft

Bus & Motor

DSV-3E-5, AJ10-118F

Mass

756 kg wet, 756 kg dry

Launch date (UTC)

1973-11-06 (53 years ago)

Launch vehicle

Unknown

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

CYL + NOZZLE, 2.4 m

Radar Cross Section

Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 12 hours ago

TLE from 12 hours ago

0 DELTA 1 R/B
1 06921U 73086B   26213.06810976 -.00000033  00000-0  10291-3 0  9996
2 06921 102.3371 243.3841 0014668 186.4588 173.6286 12.37069020395883

Epoch: 2026-08-01T01:38Z

TLE epoch observation values (Epoch: 2026-08-01T01:38:04.683Z)

Latitude

0.00006°

Longitude

-90.82066°

Altitude

1,533.098 km

Speed

7.094 km/s

True Right ascension

16h 13m 32s

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

03:11:32

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,528.231 km

Perigee altitude

1,505.071 km

Semi-major axis

7,894.788 km

Eccentricity

0.00147

Inclination

102.3371°

RAAN

243.3841°

Arg. of periapsis

186.4588°

True anomaly

173.64722°

Mean anomaly

173.6286°

Eccentric anomaly

173.63791°

Mean motion

3.09409 °/min

Orbital period

116.35 mins

BSTAR

0.00010291

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Other satellites on launch #86 in the year 1973 (1973-11-06 UTC)

DELTA 1 DEB, 18647

DELTA 1 DEB, 7203

DELTA 1 DEB, 7090 (Decayed)

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DELTA 1 R/B 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.
15 mins	2026-08-01 13:55:19.455Z	36.005° NE	2026-08-01 14:03:19.455Z	104.127° ESE	28.842°	2026-08-01 14:10:19.455Z	159.673° S
15 mins	2026-08-01 15:50:19.455Z	7.341° NNE	2026-08-01 15:57:19.455Z	293.95° NW	39.535°	2026-08-01 16:05:19.455Z	221.743° SW
5 mins	2026-08-01 17:47:19.455Z	332.794° NNW	2026-08-01 17:49:19.455Z	318.331° NNW	12.537°	2026-08-01 17:52:19.455Z	296.859° NW
4 mins	2026-08-01 23:16:19.455Z	51.923° ENE	2026-08-01 23:17:19.455Z	44.742° NE	12.043°	2026-08-01 23:20:19.455Z	23.556° NE
14 mins	2026-08-02 01:03:19.455Z	132.522° SE	2026-08-02 01:10:19.455Z	52.426° ENE	38.555°	2026-08-02 01:17:19.455Z	352.165° N
13 mins	2026-08-02 02:58:19.455Z	205.764° SW	2026-08-02 03:04:19.455Z	263.686° W	30.264°	2026-08-02 03:11:19.455Z	323.155° NNW
8 mins	2026-08-02 13:17:19.455Z	66.289° ENE	2026-08-02 13:20:19.455Z	89.95° E	16.49°	2026-08-02 13:25:19.455Z	127.433° SE

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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 R/B, 6921 on other resources

View DELTA 1 R/B, 6921 on Heavens-Above

View DELTA 1 R/B, 6921 on Keep Track

View DELTA 1 R/B, 6921 on Celestrak

View DELTA 1 R/B, 6921 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 R/B, 6921

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 12 hours ago

TLE from 12 hours ago

TLE epoch observation values (Epoch: 2026-08-01T01:38:04.683Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #86 in the year 1973 (1973-11-06 UTC)

DELTA 1 R/B Visibility forecast

Co-orbital & Co-planar RSOs

Check out DELTA 1 R/B, 6921 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 12 hours ago