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: 16 hours ago

TLE from 16 hours ago

0 DELTA 1 R/B
1  7946U 75052B   26181.94528975 -.00000004  00000-0  58263-4 0  9995
2  7946  99.6444  75.8754 0045276 336.8346  35.5276 13.53818742737015

Epoch: 2026-06-30T22:41Z

TLE epoch observation values (Epoch: 2026-06-30T22:41:13.034Z)

Latitude

12.44522°

Longitude

174.42382°

Altitude

1,032.927 km

Speed

7.35 km/s

True Right ascension

04h 54m 56s

True Declination

12° 22' 33"

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

01:58:43

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,089.192 km

Perigee altitude

1,021.878 km

Semi-major axis

7,433.672 km

Eccentricity

0.00453

Inclination

99.6444°

RAAN

75.8754°

Arg. of periapsis

336.8346°

True anomaly

35.83048°

Mean anomaly

35.5276°

Eccentric anomaly

35.6789°

Mean motion

3.3864 °/min

Orbital period

106.31 mins

BSTAR

0.000058263

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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.
10 mins	2026-07-01 16:29:34.880Z	146.001° SSE	2026-07-01 16:33:34.880Z	90.488° ESE	41.447°	2026-07-01 16:39:34.880Z	353.071° N
7 mins	2026-07-01 18:16:34.880Z	236.506° WSW	2026-07-01 18:19:34.880Z	271.052° WNW	19.055°	2026-07-01 18:23:34.880Z	311.409° NW
11 mins	2026-07-02 05:23:34.880Z	30.243° NE	2026-07-02 05:28:34.880Z	109.598° ESE	38.467°	2026-07-02 05:34:34.880Z	176.333° S
9 mins	2026-07-02 07:08:34.880Z	345.504° N	2026-07-02 07:12:34.880Z	300.583° NW	24.99°	2026-07-02 07:17:34.880Z	245.948° 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, 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: 16 hours ago

TLE from 16 hours ago

TLE epoch observation values (Epoch: 2026-06-30T22:41:13.034Z)

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: 16 hours ago