DELTA 1 R/B, 738

Orbit data source: Space-Track

DELTA 1 R/B, 738 is space debris originally from a launch on Tue, 21 Jan 1964 UTC launched from the Air Force Eastern Test Range (AFETR). 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/738?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

738, 1964-003B

Orbit

Active

Country

Related business

National Aeronautics and Space Administration (NASA) (US)

Manufacturer

ABL

Mission

Spacecraft

Bus & Motor

ALTAIR, Unknown motor

Mass

24 kg wet, 24 kg dry

Launch date (UTC)

1964-01-21 (62 years ago)

Launch vehicle

Unknown

Launch site

Air Force Eastern Test Range (AFETR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Cyl, 0.8 m

Radar Cross Section

0.687 m², Medium (>0.1 m² and < 1m²)

Expand to show TLE details & history
Last TLE update: 16 hours ago

TLE from 16 hours ago

0 DELTA 1 R/B
1 00738U 64003B   25259.21939474 -.00000025  00000-0  00000-0 0  9991
2 00738  46.4579 302.3142 2604212  66.5637 318.6362  7.39344569665219

Epoch: 2025-09-16T05:15Z

TLE epoch observation values (Epoch: 2025-09-16T05:15:55.705Z)

Latitude

-0.00003°

Longitude

-132.08076°

Altitude

3,021.102 km

Speed

7.001 km/s

True Right ascension

20h 09m 15s

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

14:27:34

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

7,651.816 km

Perigee altitude

1,854.235 km

Semi-major axis

11,131.163 km

Eccentricity

0.26042

Inclination

46.4579°

RAAN

302.3142°

Arg. of periapsis

66.5637°

True anomaly

293.5013°

Mean anomaly

318.6362°

Eccentric anomaly

306.66788°

Mean motion

1.84813 °/min

Orbital period

194.79 mins

BSTAR

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Other satellites on launch #3 in the year 1964 (1964-01-21 UTC)

RELAY 2, 737

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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.
19 mins	2025-09-17 04:00:41.766Z	191.615° SSW	2025-09-17 04:11:41.766Z	138.75° SSE	27.71°	2025-09-17 04:19:41.766Z	78.988° E
19 mins	2025-09-17 07:28:41.766Z	256.391° W	2025-09-17 07:37:41.766Z	358.276° N	43.859°	2025-09-17 07:47:41.766Z	66.823° ENE
27 mins	2025-09-17 10:55:41.766Z	295.097° NW	2025-09-17 11:04:41.766Z	20.514° NNE	44.391°	2025-09-17 11:22:41.766Z	109.957° ESE
35 mins	2025-09-17 14:21:41.766Z	283.916° WNW	2025-09-17 14:32:41.766Z	223.366° SW	33.102°	2025-09-17 14:56:41.766Z	164.263° S

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, 738 on other resources

View DELTA 1 R/B, 738 on Heavens-Above

View DELTA 1 R/B, 738 on Keep Track

View DELTA 1 R/B, 738 on Celestrak

View DELTA 1 R/B, 738 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, 738

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: 2025-09-16T05:15:55.705Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #3 in the year 1964 (1964-01-21 UTC)

DELTA 1 R/B Visibility forecast

Co-orbital & Co-planar RSOs

Check out DELTA 1 R/B, 738 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 16 hours ago