DELTA 1 DEB, 12528

Orbit data source: Space-Track

DELTA 1 DEB, 12528 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/12528?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/12528?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

12528, 1976-077DH

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, 0.4 m

Radar Cross Section

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 17 hours ago

TLE from 17 hours ago

0 DELTA 1 DEB
1 12528U 76077DH  26048.45682251 -.00000036  00000-0  84296-4 0  9991
2 12528 102.5549  33.2819 0077708 145.0570 336.9367 12.27221241156499

Epoch: 2026-02-17T10:57Z

TLE epoch observation values (Epoch: 2026-02-17T10:57:49.464Z)

Latitude

56.2947°

Longitude

-79.20688°

Altitude

1,513.699 km

Speed

7.139 km/s

True Right ascension

15h 30m 44s

True Declination

56° 09' 04"

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

06:31:14

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,620.545 km

Perigee altitude

1,497.191 km

Semi-major axis

7,937.005 km

Eccentricity

0.00777

Inclination

102.5549°

RAAN

33.2819°

Arg. of periapsis

145.057°

True anomaly

336.58472°

Mean anomaly

336.9367°

Eccentric anomaly

336.76103°

Mean motion

3.06943 °/min

Orbital period

117.29 mins

BSTAR

0.000084296

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.
12 mins	2026-02-18 10:27:13.179Z	46.086° ENE	2026-02-18 10:33:13.179Z	95.046° ESE	23.063°	2026-02-18 10:39:13.179Z	144.313° SSE
15 mins	2026-02-18 12:22:13.179Z	11.78° NNE	2026-02-18 12:29:13.179Z	277.824° WNW	42.992°	2026-02-18 12:37:13.179Z	212.418° SW
7 mins	2026-02-18 14:19:13.179Z	338.175° N	2026-02-18 14:22:13.179Z	315.041° NNW	15.635°	2026-02-18 14:26:13.179Z	284.758° WNW
14 mins	2026-02-18 21:39:13.179Z	126.688° SE	2026-02-18 21:46:13.179Z	58.713° ENE	36.096°	2026-02-18 21:53:13.179Z	354.986° N
15 mins	2026-02-18 23:34:13.179Z	195.335° SSW	2026-02-18 23:41:13.179Z	261.993° W	34.014°	2026-02-18 23:49:13.179Z	328.328° NNW

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 DEB, 12528 on other resources

View DELTA 1 DEB, 12528 on Heavens-Above

View DELTA 1 DEB, 12528 on Keep Track

View DELTA 1 DEB, 12528 on Celestrak

View DELTA 1 DEB, 12528 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, 12528

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 17 hours ago

TLE from 17 hours ago

TLE epoch observation values (Epoch: 2026-02-17T10:57:49.464Z)

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, 12528 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 17 hours ago