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: 19 hours ago

TLE from 19 hours ago

0 DELTA 1 R/B
1 06921U 73086B   26287.06350477 -.00000042  00000-0  28112-4 0  9994
2 06921 102.3292 317.8939 0014769  54.0378 306.2051 12.37070580405035

Epoch: 2026-10-14T01:31Z

TLE epoch observation values (Epoch: 2026-10-14T01:31:26.812Z)

Latitude

0.00008°

Longitude

-87.58643°

Altitude

1,514.698 km

Speed

7.111 km/s

True Right ascension

21h 11m 34s

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

14:45:47

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,528.304 km

Perigee altitude

1,504.984 km

Semi-major axis

7,894.781 km

Eccentricity

0.00148

Inclination

102.3292°

RAAN

317.8939°

Arg. of periapsis

54.0378°

True anomaly

306.06839°

Mean anomaly

306.2051°

Eccentric anomaly

306.13676°

Mean motion

3.09409 °/min

Orbital period

116.35 mins

BSTAR

0.000028112

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

DELTA 1 DEB, 7487 (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	2026-10-15 00:55:43.513Z	129.264° SE	2026-10-15 01:03:43.513Z	56.765° ENE	45.054°	2026-10-15 01:10:43.513Z	355.065° N
14 mins	2026-10-15 02:50:43.513Z	194.176° SSW	2026-10-15 02:57:43.513Z	262.039° W	42.57°	2026-10-15 03:04:43.513Z	326.02° NNW
5 mins	2026-10-15 13:11:43.513Z	74.302° E	2026-10-15 13:13:43.513Z	89.097° E	13.624°	2026-10-15 13:16:43.513Z	110.9° ESE
16 mins	2026-10-15 15:01:43.513Z	22.091° NNE	2026-10-15 15:08:43.513Z	80.727° E	74.689°	2026-10-15 15:17:43.513Z	193.063° SSW
11 mins	2026-10-15 16:57:43.513Z	347.856° N	2026-10-15 17:02:43.513Z	303.447° NW	26.524°	2026-10-15 17:08:43.513Z	256.431° W

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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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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: 19 hours ago

TLE from 19 hours ago

TLE epoch observation values (Epoch: 2026-10-14T01:31:26.812Z)

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: 19 hours ago