DELTA 1 DEB, 12257

Orbit data source: Space-Track

DELTA 1 DEB, 12257 is space debris in SSO originally from a launch on Sun, 05 Mar 1978 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/12257?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/12257?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

12257, 1978-026DA

Orbit

SSO

Country

Related business

National Aeronautics and Space Administration (NASA) (US)

Manufacturer

Unknown

Mission

Spacecraft

Bus & Motor

Unknown

Mass

Unknown

Launch date (UTC)

1978-03-05 (48 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: 21 hours ago

TLE from 21 hours ago

0 DELTA 1 DEB
1 12257U 78026DA  26155.10157703  .00000460  00000-0  30251-3 0  9997
2 12257  99.3201 111.4180 0099874 314.6410  44.6644 14.04863010314480

Epoch: 2026-06-04T02:26Z

TLE epoch observation values (Epoch: 2026-06-04T02:26:16.255Z)

Latitude

-0.00005°

Longitude

-177.70039°

Altitude

828.693 km

Speed

7.465 km/s

True Right ascension

07h 25m 40s

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

09:47:43

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

946.645 km

Perigee altitude

801.78 km

Semi-major axis

7,252.349 km

Eccentricity

0.00999

Inclination

99.3201°

RAAN

111.418°

Arg. of periapsis

314.641°

True anomaly

45.47609°

Mean anomaly

44.6644°

Eccentric anomaly

45.06952°

Mean motion

3.51419 °/min

Orbital period

102.44 mins

BSTAR

0.00030251

Loading maneuver chart data...

Computing Atmospheric mass density...

Loading historical data...

Other satellites on launch #26 in the year 1978 (1978-03-05 UTC)

DELTA 1 DEB, 12241 (Decayed)

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.
10 mins	2026-06-05 09:47:27.750Z	21.032° NNE	2026-06-05 09:52:27.750Z	102.19° ESE	42.982°	2026-06-05 09:57:27.750Z	184.512° SSW
6 mins	2026-06-05 11:30:27.750Z	329.924° NNW	2026-06-05 11:33:27.750Z	293.717° NW	18.229°	2026-06-05 11:36:27.750Z	261.102° W
6 mins	2026-06-05 19:38:27.750Z	89.756° E	2026-06-05 19:40:27.750Z	65.27° ENE	17.389°	2026-06-05 19:44:27.750Z	19.696° NNE
9 mins	2026-06-05 21:17:27.750Z	179.241° S	2026-06-05 21:21:27.750Z	261.338° W	42.254°	2026-06-05 21:26:27.750Z	338.666° N

Items per page:

1–4 of 4 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, 12257 on other resources

View DELTA 1 DEB, 12257 on Heavens-Above

View DELTA 1 DEB, 12257 on Keep Track

View DELTA 1 DEB, 12257 on Celestrak

View DELTA 1 DEB, 12257 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, 12257

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: 2026-06-04T02:26:16.255Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #26 in the year 1978 (1978-03-05 UTC)

DELTA 1 DEB Visibility forecast

Co-orbital & Co-planar RSOs

Check out DELTA 1 DEB, 12257 on other resources

Documentation

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