DELTA 1 DEB, 12531

Orbit data source: Space-Track

DELTA 1 DEB, 12531 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.

Loading next visibility...

Iframe embed code

<iframe src="https://www.satcat.com/sats-embedded/12531?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/12531?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

12531, 1976-077DL

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, 0.1 m

Radar Cross Section

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 3 days ago

TLE from 3 days ago

0 DELTA 1 DEB
1 12531U 76077DL  26170.86628451 -.00000043  00000-0 -32369-4 0  9991
2 12531 101.7949 317.7024 0136976 105.3077  56.7576 12.18516252 47565

Epoch: 2026-06-19T20:47Z

TLE epoch observation values (Epoch: 2026-06-19T20:47:26.981Z)

Latitude

16.23527°

Longitude

-78.78004°

Altitude

1,542.056 km

Speed

7.123 km/s

True Right ascension

09h 24m 41s

True Declination

16° 09' 08"

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

13:18:38

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,705.836 km

Perigee altitude

1,487.366 km

Semi-major axis

7,974.738 km

Eccentricity

0.0137

Inclination

101.7949°

RAAN

317.7024°

Arg. of periapsis

105.3077°

True anomaly

58.08269°

Mean anomaly

56.7576°

Eccentric anomaly

57.41891°

Mean motion

3.04767 °/min

Orbital period

118.12 mins

BSTAR

-0.000032369

Loading maneuver chart data...

Computing Atmospheric mass density...

Loading historical data...

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

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 DEB 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.
4 mins	2026-06-23 06:57:02.012Z	55.647° ENE	2026-06-23 06:59:02.012Z	41.602° NE	11.103°	2026-06-23 07:01:02.012Z	27.592° NE
14 mins	2026-06-23 08:46:02.012Z	133.039° SE	2026-06-23 08:53:02.012Z	60.008° ENE	38.3°	2026-06-23 09:00:02.012Z	353.92° N
13 mins	2026-06-23 10:43:02.012Z	206.103° SW	2026-06-23 10:49:02.012Z	262.752° W	30.35°	2026-06-23 10:56:02.012Z	323.423° NNW
11 mins	2026-06-23 21:09:02.012Z	53.894° ENE	2026-06-23 21:14:02.012Z	94.843° ESE	20.074°	2026-06-23 21:20:02.012Z	139.568° SSE
15 mins	2026-06-23 23:04:02.012Z	13.545° NNE	2026-06-23 23:11:02.012Z	256.842° W	44.124°	2026-06-23 23:19:02.012Z	206.408° SW
8 mins	2026-06-24 01:02:02.012Z	336.179° NNW	2026-06-24 01:05:02.012Z	312.006° NW	17.133°	2026-06-24 01:10:02.012Z	274.515° WNW

Items per page:

1–6 of 6 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 DEB, 12531 on other resources

View DELTA 1 DEB, 12531 on Heavens-Above

View DELTA 1 DEB, 12531 on Keep Track

View DELTA 1 DEB, 12531 on Celestrak

View DELTA 1 DEB, 12531 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, 12531

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 3 days ago

TLE from 3 days ago

TLE epoch observation values (Epoch: 2026-06-19T20:47:26.981Z)

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, 12531 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 3 days ago