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, 1.1 m

Radar Cross Section

Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 16 hours ago

TLE from 16 hours ago

0 DELTA 1 R/B
1  6921U 73086B   26263.04535463 -.00000044  00000-0  13071-4 0  9996
2  6921 102.3333 293.7167 0014943  97.1841 263.0919 12.37070107402061

Epoch: 2026-09-20T01:05Z

TLE epoch observation values (Epoch: 2026-09-20T01:05:18.640Z)

Latitude

0.00001°

Longitude

-81.55614°

Altitude

1,523.016 km

Speed

7.103 km/s

True Right ascension

19h 34m 52s

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

09:47:44

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,528.444 km

Perigee altitude

1,504.849 km

Semi-major axis

7,894.783 km

Eccentricity

0.00149

Inclination

102.3333°

RAAN

293.7167°

Arg. of periapsis

97.1841°

True anomaly

262.92195°

Mean anomaly

263.0919°

Eccentric anomaly

263.00692°

Mean motion

3.09409 °/min

Orbital period

116.35 mins

BSTAR

0.000013071

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

DELTA 1 DEB, 7207 (Decayed)

DELTA 1 DEB, 42590

DELTA 1 DEB, 7125 (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.
11 mins	2026-09-20 17:12:50.728Z	350.895° N	2026-09-20 17:17:50.728Z	313.075° NW	20.982°	2026-09-20 17:23:50.728Z	267.037° W
13 mins	2026-09-21 00:31:50.728Z	112.456° ESE	2026-09-21 00:37:50.728Z	60.633° ENE	33.651°	2026-09-21 00:44:50.728Z	0.176° NNE
15 mins	2026-09-21 02:24:50.728Z	180.393° SSW	2026-09-21 02:31:50.728Z	257.72° W	59.162°	2026-09-21 02:39:50.728Z	334.035° NNW
14 mins	2026-09-21 14:36:50.728Z	30.773° NE	2026-09-21 14:43:50.728Z	114.399° SE	55.429°	2026-09-21 14:50:50.728Z	178.449° S
13 mins	2026-09-21 16:30:50.728Z	358.604° N	2026-09-21 16:36:50.728Z	306.303° NW	35.361°	2026-09-21 16:43:50.728Z	243.772° WSW

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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: 16 hours ago

TLE from 16 hours ago

TLE epoch observation values (Epoch: 2026-09-20T01:05:18.640Z)

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: 16 hours ago