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 (52 years ago)

Launch vehicle

Unknown

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Unknown

Radar Cross Section

Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 13 hours ago

TLE from 13 hours ago

0 DELTA 1 R/B
1 06921U 73086B   26034.50850143 -.00000035  00000-0  90030-4 0  9998
2 06921 102.3558  63.4229 0014951 153.0290 207.1550 12.37065297373803

Epoch: 2026-02-03T12:12Z

TLE epoch observation values (Epoch: 2026-02-03T12:12:14.523Z)

Latitude

-0.00004°

Longitude

106.67397°

Altitude

1,532.11 km

Speed

7.095 km/s

True Right ascension

04h 13m 41s

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

03:14:36

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,528.472 km

Perigee altitude

1,504.865 km

Semi-major axis

7,894.805 km

Eccentricity

0.0015

Inclination

102.3558°

RAAN

63.4229°

Arg. of periapsis

153.029°

True anomaly

207.07694°

Mean anomaly

207.155°

Eccentric anomaly

207.11596°

Mean motion

3.09408 °/min

Orbital period

116.35 mins

BSTAR

0.00009003

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

DELTA 1 DEB, 9700 (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.
16 mins	2026-02-04 01:52:10.332Z	171.911° S	2026-02-04 02:00:10.332Z	250.953° W	42.954°	2026-02-04 02:08:10.332Z	336.34° NNW
14 mins	2026-02-04 14:05:10.332Z	33.7° NE	2026-02-04 14:12:10.332Z	108.019° ESE	36.373°	2026-02-04 14:19:10.332Z	171.859° S
14 mins	2026-02-04 15:59:10.332Z	1.688° NNE	2026-02-04 16:06:10.332Z	294.286° NW	33.072°	2026-02-04 16:13:10.332Z	235.761° WSW
8 mins	2026-02-04 23:22:10.332Z	75.608° E	2026-02-04 23:26:10.332Z	44.675° NE	16.574°	2026-02-04 23:30:10.332Z	14.951° NNE
7 mins	2026-02-05 01:11:10.332Z	148.432° SSE	2026-02-05 01:18:10.332Z	85.398° E	43.503°	2026-02-05 01:18:10.332Z	85.398° E

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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: 13 hours ago

TLE from 13 hours ago

TLE epoch observation values (Epoch: 2026-02-03T12:12:14.523Z)

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: 13 hours ago