DELTA 1 DEB, 12540

Orbit data source: Space-Track

DELTA 1 DEB, 12540 is space debris in SSO originally from a launch on Thu, 29 Jul 1976 UTC launched from the Air Force Western Test Range (AFWTR). 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/12540?theme=dark&initialShowStats=false

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Identifier

12540, 1976-077DV

Orbit

SSO

Country

Related business

National Aeronautics and Space Administration (NASA) (US)

Manufacturer

Unknown

Mission

Spacecraft

Bus & Motor

Unknown

Mass

Unknown

Launch date (UTC)

1976-07-29 (50 years ago)

Launch vehicle

Unknown

Launch site

Air Force Western Test Range (AFWTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Unknown shape, 0.065 m

Radar Cross Section

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 15 hours ago

TLE from 15 hours ago

0 DELTA 1 DEB
1 12540U 76077DV  26296.27977034 -.00000318  00000-0 -18398-2 0  9998
2 12540 102.4510  62.6614 0043329 119.6059 270.5196 12.47034563116715

Epoch: 2026-10-23T06:42Z

TLE epoch observation values (Epoch: 2026-10-23T06:42:52.157Z)

Latitude

28.91082°

Longitude

-76.72816°

Altitude

1,480.023 km

Speed

7.126 km/s

True Right ascension

03h 42m 46s

True Declination

28° 46' 44"

Sunlit

Object was in full shadow 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

17:00:58

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,508.541 km

Perigee altitude

1,440.491 km

Semi-major axis

7,852.653 km

Eccentricity

0.00433

Inclination

102.451°

RAAN

62.6614°

Arg. of periapsis

119.6059°

True anomaly

270.02309°

Mean anomaly

270.5196°

Eccentric anomaly

270.27135°

Mean motion

3.11902 °/min

Orbital period

115.42 mins

BSTAR

-0.0018398

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Other satellites on launch #77 in the year 1976 (1976-07-29 UTC)

DELTA 1 DEB, 10719

DELTA 1 DEB, 12541 (Decayed)

DELTA 1 DEB, 10705 (Decayed)

DELTA 1 DEB, 20309

DELTA 1 DEB, 40760

DELTA 1 DEB, 19858 (Decayed)

DELTA 1 DEB, 10651 (Decayed)

DELTA 1 DEB, 40753

DELTA 1 DEB *, 18466 (Decayed)

DELTA 1 DEB, 10839 (Decayed)

DELTA 1 DEB, 16997 (Decayed)

DELTA 1 DEB, 10827 (Decayed)

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DELTA 1 DEB 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	2026-10-23 22:33:09.347Z	6.271° NNE	2026-10-23 22:40:09.347Z	306.586° NW	45.216°	2026-10-23 22:48:09.347Z	229.813° WSW
6 mins	2026-10-24 05:55:09.347Z	62.457° ENE	2026-10-24 05:57:09.347Z	47.422° ENE	13.722°	2026-10-24 06:01:09.347Z	18.05° NNE
15 mins	2026-10-24 07:42:09.347Z	139.573° SSE	2026-10-24 07:49:09.347Z	62.224° ENE	60.067°	2026-10-24 07:57:09.347Z	348.802° N
12 mins	2026-10-24 09:37:09.347Z	212.147° SW	2026-10-24 09:42:09.347Z	256.765° W	30.048°	2026-10-24 09:49:09.347Z	318.677° NNW
8 mins	2026-10-24 19:50:09.347Z	61.387° ENE	2026-10-24 19:54:09.347Z	93.716° ESE	17.582°	2026-10-24 19:58:09.347Z	125.342° SE
11 mins	2026-10-24 21:41:09.347Z	17.975° NNE	2026-10-24 21:48:09.347Z	286.76° WNW	88.849°	2026-10-24 21:52:09.347Z	201.303° SSW

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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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Check out DELTA 1 DEB, 12540 on other resources

View DELTA 1 DEB, 12540 on Heavens-Above

View DELTA 1 DEB, 12540 on Keep Track

View DELTA 1 DEB, 12540 on Celestrak

View DELTA 1 DEB, 12540 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 DEB, 12540

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 15 hours ago

TLE from 15 hours ago

TLE epoch observation values (Epoch: 2026-10-23T06:42:52.157Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #77 in the year 1976 (1976-07-29 UTC)

DELTA 1 DEB Visibility forecast

Co-orbital & Co-planar RSOs

Check out DELTA 1 DEB, 12540 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 15 hours ago