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 (63 years ago)

Launch vehicle

Unknown

Launch site

Air Force Eastern Test Range (AFETR)

Object type

Payload

Rocket body

Debris

Shape & HBR

CYL, 1.1 m

Radar Cross Section

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 20 hours ago

TLE from 20 hours ago

0 DELTA 1 R/B
1 00738U 64003B   26259.39068428 -.00000024  00000-0  00000-0 0  9992
2 00738  46.4499 251.1818 2602280 116.0004 273.0747  7.39333513692222

Epoch: 2026-09-16T09:22Z

TLE epoch observation values (Epoch: 2026-09-16T09:22:35.121Z)

Latitude

-0.00004°

Longitude

115.19247°

Altitude

5,331.638 km

Speed

5.682 km/s

True Right ascension

16h 44m 43s

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

21:59:58

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

7,649.807 km

Perigee altitude

1,856.468 km

Semi-major axis

11,131.274 km

Eccentricity

0.26023

Inclination

46.4499°

RAAN

251.1818°

Arg. of periapsis

116.0004°

True anomaly

244.06062°

Mean anomaly

273.0747°

Eccentric anomaly

258.46583°

Mean motion

1.8481 °/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.
22 mins	2026-09-17 05:15:48.868Z	272.376° WNW	2026-09-17 05:27:48.868Z	348.627° N	65.454°	2026-09-17 05:37:48.868Z	74.987° E
20 mins	2026-09-17 08:45:48.868Z	296.023° NW	2026-09-17 08:54:48.868Z	206.621° SW	78.519°	2026-09-17 09:05:48.868Z	128.149° SE
9 mins	2026-09-17 12:15:48.868Z	252.769° W	2026-09-17 12:19:48.868Z	229.843° WSW	13.633°	2026-09-17 12:24:48.868Z	206.096° SW
38 mins	2026-09-18 00:12:48.868Z	196.068° SSW	2026-09-18 00:37:48.868Z	136.564° SSE	43.355°	2026-09-18 00:50:48.868Z	70.874° E
29 mins	2026-09-18 03:47:48.868Z	251.173° W	2026-09-18 04:05:48.868Z	318.206° NNW	76.656°	2026-09-18 04:16:48.868Z	66.358° ENE

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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, 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: 20 hours ago

TLE from 20 hours ago

TLE epoch observation values (Epoch: 2026-09-16T09:22:35.121Z)

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: 20 hours ago