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.

Loading next visibility...

Iframe embed code

<iframe src="https://www.satcat.com/sats-embedded/738?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

Iframe URL

https://www.satcat.com/sats-embedded/738?theme=dark&initialShowStats=false

Optional Secondary NORAD IDs

Max 10 NORAD IDs; Separated by commas

Initial load time (optional)

ISO8601 Format

TLE date request (optional)

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

Unknown

Radar Cross Section

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 19 hours ago

TLE from 19 hours ago

0 DELTA 1 R/B
1 00738U 64003B   26106.19141126 -.00000012  00000-0  00000-0 0  9995
2 00738  46.4705  63.6520 2607584 304.3940  33.6458  7.39350920680891

Epoch: 2026-04-16T04:35Z

TLE epoch observation values (Epoch: 2026-04-16T04:35:37.932Z)

Latitude

-0.00001°

Longitude

150.40144°

Altitude

2,665.792 km

Speed

7.235 km/s

True Right ascension

04h 14m 36s

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

06:09:21

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

7,655.488 km

Perigee altitude

1,850.433 km

Semi-major axis

11,131.098 km

Eccentricity

0.26076

Inclination

46.4705°

RAAN

63.652°

Arg. of periapsis

304.394°

True anomaly

55.67071°

Mean anomaly

33.6458°

Eccentric anomaly

44.02984°

Mean motion

1.84815 °/min

Orbital period

194.79 mins

BSTAR

Loading maneuver chart data...

Computing Atmospheric mass density...

Loading historical data...

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

RELAY 2, 737

Did you know?

You can import UDL-sourced sensor .json files into the Sandbox to generate a visibility chart that accounts for multi-vendor sensor geometry.

Click here to try in Sandbox

DELTA 1 R/B Visibility forecast

Loading observer location...
Set Observer location

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.
66 mins	2026-04-17 00:10:21.867Z	229.713° WSW	2026-04-17 00:30:21.867Z	152.349° SSE	44.828°	2026-04-17 01:16:21.867Z	65.402° ENE
86 mins	2026-04-17 03:41:21.867Z	279.453° WNW	2026-04-17 04:15:21.867Z	12.588° NNE	44.447°	2026-04-17 05:07:21.867Z	104.579° ESE
84 mins	2026-04-17 07:17:21.867Z	300.675° NW	2026-04-17 08:01:21.867Z	232.37° WSW	42.214°	2026-04-17 08:41:21.867Z	157.644° S
38 mins	2026-04-17 11:08:21.867Z	288.551° WNW	2026-04-17 11:28:21.867Z	263.717° W	14.782°	2026-04-17 11:46:21.867Z	237.066° WSW
38 mins	2026-04-17 22:51:21.867Z	205.393° SW	2026-04-17 23:07:21.867Z	131.788° SE	41.8°	2026-04-17 23:29:21.867Z	64.398° ENE

Items per page:

1–5 of 5 items

of 1 page

Co-orbital & Co-planar RSOs

Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions

Please sign-in to view Co-orbital & Co-planar RSOs.

Click to sort rows by RSO header in ascending order	Click to sort rows by Country header in ascending order	Click to sort rows by Type header in ascending order	Click to sort rows by Inclination Δ header in ascending order	Click to sort rows by RAAN Δ header in ascending order	Click to sort rows by Coplanar Angle header in ascending order	Click to sort rows by SMA Δ header in ascending order	Click to sort rows by Orbital period header in ascending order	Click to sort rows by <5km Md TCA header in descending order

CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings

Authenticating...

Click to sort rows by Secondary header in ascending order	Click to sort rows by Secondary name header in ascending order	Click to sort rows by Country header in ascending order	Click to sort rows by Owner header in ascending order	Click to sort rows by Obj. Type header in ascending order	Click to sort rows by Miss dist. header in ascending order	Click to sort rows by Rel. speed header in ascending order	Click to sort rows by Apr. angle header in ascending order	Click to sort rows by TCA header in descending order

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: 19 hours ago

TLE from 19 hours ago

TLE epoch observation values (Epoch: 2026-04-16T04:35:37.932Z)

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: 19 hours ago