DELTA 1 R/B(1), 10144

Orbit data source: Space-Track

DELTA 1 R/B(1), 10144 is space debris in LEO originally from a launch on Thu, 14 Jul 1977 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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https://www.satcat.com/sats-embedded/10144?theme=dark&initialShowStats=false

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Identifier

10144, 1977-065B

Orbit

LEO

Country

Related business

National Aeronautics and Space Administration (NASA) (US)

Manufacturer

MDAC-HB

Mission

Spacecraft

Bus & Motor

DELTA/TR-201, Unknown motor

Mass

845 kg wet, 845 kg dry

Launch date (UTC)

1977-07-14 (49 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

Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 21 hours ago

TLE from 21 hours ago

0 DELTA 1 R/B(1)
1 10144U 77065B   26082.22634178  .00001416  00000-0  39704-3 0  9994
2 10144  29.0650  64.2185 0840338 310.5983  42.4345 13.25883925351484

Epoch: 2026-03-23T05:25Z

TLE epoch observation values (Epoch: 2026-03-23T05:25:55.929Z)

Latitude

-0.00001°

Longitude

162.01406°

Altitude

719.869 km

Speed

7.713 km/s

True Right ascension

04h 16m 52s

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

08:00:07

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,800.123 km

Perigee altitude

532.173 km

Semi-major axis

7,544.285 km

Eccentricity

0.08403

Inclination

29.065°

RAAN

64.2185°

Arg. of periapsis

310.5983°

True anomaly

49.45826°

Mean anomaly

42.4345°

Eccentric anomaly

45.89163°

Mean motion

3.3122 °/min

Orbital period

108.69 mins

BSTAR

0.00039704

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Other satellites on launch #65 in the year 1977 (1977-07-14 UTC)

DELTA 1 DEB, 10629

DELTA 1 DEB, 10345 (Decayed)

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DELTA 1 R/B(1) 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.
15 mins	2026-03-24 03:22:11.279Z	227.523° WSW	2026-03-24 03:29:11.279Z	162.313° S	30.732°	2026-03-24 03:37:11.279Z	105.593° ESE
16 mins	2026-03-24 05:18:11.279Z	243.344° WSW	2026-03-24 05:25:11.279Z	176.292° S	34.564°	2026-03-24 05:34:11.279Z	117.317° SE
17 mins	2026-03-24 07:13:11.279Z	253.012° W	2026-03-24 07:21:11.279Z	195.17° SSW	29.145°	2026-03-24 07:30:11.279Z	140.298° SSE
10 mins	2026-03-24 09:12:11.279Z	238.219° WSW	2026-03-24 09:16:11.279Z	214.987° SW	16.33°	2026-03-24 09:22:11.279Z	180.492° SSW
6 mins	2026-03-25 01:01:11.279Z	167.82° S	2026-03-25 01:03:11.279Z	148.79° SSE	14.25°	2026-03-25 01:07:11.279Z	117.135° SE

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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(1), 10144 on other resources

View DELTA 1 R/B(1), 10144 on Heavens-Above

View DELTA 1 R/B(1), 10144 on Keep Track

View DELTA 1 R/B(1), 10144 on Celestrak

View DELTA 1 R/B(1), 10144 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(1), 10144

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 21 hours ago

TLE from 21 hours ago

TLE epoch observation values (Epoch: 2026-03-23T05:25:55.929Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #65 in the year 1977 (1977-07-14 UTC)

DELTA 1 R/B(1) Visibility forecast

Co-orbital & Co-planar RSOs

Check out DELTA 1 R/B(1), 10144 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 21 hours ago