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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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: 7 hours ago

TLE from 7 hours ago

0 DELTA 1 R/B
1 07946U 75052B   25356.58031358  .00000009  00000-0  76778-4 0  9997
2 07946  99.6647 250.1887 0046238  91.8155 331.5242 13.53800573711253

Epoch: 2025-12-22T13:55Z

TLE epoch observation values (Epoch: 2025-12-22T13:55:39.093Z)

Latitude

61.61824°

Longitude

-68.37528°

Altitude

1,038.575 km

Speed

7.353 km/s

True Right ascension

15h 27m 39s

True Declination

61° 28' 47"

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

20:23:43

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,089.975 km

Perigee altitude

1,021.23 km

Semi-major axis

7,433.74 km

Eccentricity

0.00462

Inclination

99.6647°

RAAN

250.1887°

Arg. of periapsis

91.8155°

True anomaly

331.27029°

Mean anomaly

331.5242°

Eccentric anomaly

331.39737°

Mean motion

3.38635 °/min

Orbital period

106.31 mins

BSTAR

0.000076778

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

DELTA 1 DEB, 21597 (Decayed)

DELTA 1 DEB, 21508 (Decayed)

DELTA 1 DEB, 21344 (Decayed)

DELTA 1 DEB, 21519 (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.
6 mins	2025-12-23 04:27:28.873Z	63.283° ENE	2025-12-23 04:30:28.873Z	93.65° ESE	14.601°	2025-12-23 04:33:28.873Z	122.619° SE
11 mins	2025-12-23 06:10:28.873Z	11.768° NNE	2025-12-23 06:15:28.873Z	315.358° NNW	44.467°	2025-12-23 06:21:28.873Z	201.471° SSW
10 mins	2025-12-23 16:21:28.873Z	134.838° SE	2025-12-23 16:26:28.873Z	55.791° ENE	36.325°	2025-12-23 16:31:28.873Z	358.469° N
8 mins	2025-12-23 18:07:28.873Z	220.019° SW	2025-12-23 18:11:28.873Z	270.773° WNW	24.302°	2025-12-23 18:15:28.873Z	315.633° 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: 7 hours ago

TLE from 7 hours ago

TLE epoch observation values (Epoch: 2025-12-22T13:55:39.093Z)

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: 7 hours ago