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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Iframe URL

https://www.satcat.com/sats-embedded/10144?theme=dark&initialShowStats=false

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ISO8601 Format

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 (48 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: 18 hours ago

TLE from 18 hours ago

0 DELTA 1 R/B(1)
1 10144U 77065B   25297.07298586  .00002407  00000-0  69422-3 0  9994
2 10144  29.0628  83.9253 0841705 197.8526 159.0664 13.25612563331543

Epoch: 2025-10-24T01:45Z

TLE epoch observation values (Epoch: 2025-10-24T01:45:05.978Z)

Latitude

-0.00001°

Longitude

24.92725°

Altitude

1,760.604 km

Speed

6.718 km/s

True Right ascension

05h 35m 42s

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

15:07:14

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,802.27 km

Perigee altitude

532.084 km

Semi-major axis

7,545.314 km

Eccentricity

0.08417

Inclination

29.0628°

RAAN

83.9253°

Arg. of periapsis

197.8526°

True anomaly

162.20167°

Mean anomaly

159.0664°

Eccentric anomaly

160.66326°

Mean motion

3.31152 °/min

Orbital period

108.71 mins

BSTAR

0.00069422

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

DELTA 1 DEB, 10266 (Decayed)

DELTA 1 DEB, 10625 (Decayed)

DELTA 1 DEB, 10244 (Decayed)

DELTA 1 DEB, 10347 (Decayed)

DELTA 1 DEB, 10191 (Decayed)

DELTA 1 DEB, 10223 (Decayed)

DELTA 1 DEB, 10224 (Decayed)

DELTA 1 DEB, 18864 (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	2025-10-25 12:14:50.112Z	203.324° SW	2025-10-25 12:22:50.112Z	155.155° SSE	23.353°	2025-10-25 12:29:50.112Z	109.443° ESE
16 mins	2025-10-25 14:10:50.112Z	228.923° WSW	2025-10-25 14:18:50.112Z	169.385° S	32.403°	2025-10-25 14:26:50.112Z	106.738° ESE
14 mins	2025-10-25 16:06:50.112Z	248.155° W	2025-10-25 16:14:50.112Z	183.901° SSW	32.834°	2025-10-25 16:20:50.112Z	124.666° SE
10 mins	2025-10-25 18:04:50.112Z	246.568° WSW	2025-10-25 18:09:50.112Z	203.327° SW	22.677°	2025-10-25 18:14:50.112Z	153.509° SSE

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: 18 hours ago

TLE from 18 hours ago

TLE epoch observation values (Epoch: 2025-10-24T01:45:05.978Z)

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: 18 hours ago