DELTA 1 R/B, 7946

Orbit data source: Space-Track

DELTA 1 R/B, 7946 is space debris in SSO originally from a launch on Thu, 12 Jun 1975 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/7946?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

7946, 1975-052B

Orbit

SSO

Country

Related business

National Aeronautics and Space Administration (NASA) (US)

Manufacturer

MDAC-HB

Mission

Spacecraft

Bus & Motor

DELTA/TR-201, TR-201

Mass

845 kg wet, 845 kg dry

Launch date (UTC)

1975-06-12 (51 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: 12 hours ago

TLE from 12 hours ago

0 DELTA 1 R/B
1  7946U 75052B   26082.48662816  .00000002  00000-0  67512-4 0  9991
2  7946  99.6559 338.9185 0044882 223.9827 222.2506 13.53810480723551

Epoch: 2026-03-23T11:40Z

TLE epoch observation values (Epoch: 2026-03-23T11:40:44.673Z)

Latitude

79.56362°

Longitude

-84.02474°

Altitude

1,096.305 km

Speed

7.299 km/s

True Right ascension

18h 08m 33s

True Declination

79° 30' 18"

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

04:57:07

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,088.93 km

Perigee altitude

1,022.202 km

Semi-major axis

7,433.703 km

Eccentricity

0.00449

Inclination

99.6559°

RAAN

338.9185°

Arg. of periapsis

223.9827°

True anomaly

221.90622°

Mean anomaly

222.2506°

Eccentric anomaly

222.07827°

Mean motion

3.38638 °/min

Orbital period

106.31 mins

BSTAR

0.000067512

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Other satellites on launch #52 in the year 1975 (1975-06-12 UTC)

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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	2026-03-24 05:35:41.267Z	24.099° NE	2026-03-24 05:40:41.267Z	82.7° E	40.656°	2026-03-24 05:46:41.267Z	180.03° SSW
8 mins	2026-03-24 07:21:41.267Z	341.552° N	2026-03-24 07:25:41.267Z	296.635° NW	21.805°	2026-03-24 07:29:41.267Z	254.003° W
9 mins	2026-03-24 15:47:41.267Z	108.956° ESE	2026-03-24 15:51:41.267Z	58.61° ENE	26.342°	2026-03-24 15:56:41.267Z	7.226° NNE
11 mins	2026-03-24 17:30:41.267Z	189.677° SSW	2026-03-24 17:35:41.267Z	252.642° W	37.019°	2026-03-24 17:41:41.267Z	332.106° NNW

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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, 7946 on other resources

View DELTA 1 R/B, 7946 on Heavens-Above

View DELTA 1 R/B, 7946 on Keep Track

View DELTA 1 R/B, 7946 on Celestrak

View DELTA 1 R/B, 7946 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, 7946

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: 2026-03-23T11:40:44.673Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #52 in the year 1975 (1975-06-12 UTC)

DELTA 1 R/B Visibility forecast

Co-orbital & Co-planar RSOs

Check out DELTA 1 R/B, 7946 on other resources

Documentation

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