SL-3 DEB, 21126

Orbit data source: Space-Track

SL-3 DEB, 21126 is space debris in LEO originally from a launch on Fri, 28 Aug 1964 UTC launched from the Tyuratam Missile And Space Complex (TTMTR). 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/21126?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

21126, 1964-053C

Orbit

LEO

Country

CIS

Related business

Russian Strategic Rocket Forces (RU)

Manufacturer

Unknown

Mission

Spacecraft

Bus & Motor

Unknown

Mass

Unknown

Launch date (UTC)

1964-08-28 (62 years ago)

Launch vehicle

Unknown

Launch site

Tyuratam Missile And Space Complex (TTMTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Unknown shape, 0.1 m

Radar Cross Section

Small (<0.1 m²)

Expand to show TLE details & history
Last TLE update: 12 hours ago

TLE from 12 hours ago

0 SL-3 DEB
1 21126U 64053C   26072.34453398  .00001029  00000-0  18740-3 0  9991
2 21126  65.0761  75.5229 0072761 265.5689 202.3694 14.69595330251866

Epoch: 2026-03-13T08:16Z

TLE epoch observation values (Epoch: 2026-03-13T08:16:07.735Z)

Latitude

59.92548°

Longitude

-92.44553°

Altitude

718.993 km

Speed

7.477 km/s

True Right ascension

13h 30m 16s

True Declination

59° 46' 31"

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

01:04:10

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

712.12 km

Perigee altitude

609.687 km

Semi-major axis

7,039.04 km

Eccentricity

0.00728

Inclination

65.0761°

RAAN

75.5229°

Arg. of periapsis

265.5689°

True anomaly

202.05473°

Mean anomaly

202.3694°

Eccentric anomaly

202.2118°

Mean motion

3.67513 °/min

Orbital period

97.96 mins

BSTAR

0.0001874

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Other satellites on launch #53 in the year 1964 (1964-08-28 UTC)

COSMOS 44, 876

SL-3 R/B, 877

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SL-3 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.
9 mins	2026-03-14 01:52:41.727Z	208.863° SW	2026-03-14 01:56:41.727Z	153.791° SSE	44.962°	2026-03-14 02:01:41.727Z	32.088° NE
4 mins	2026-03-14 03:36:41.727Z	298.252° NW	2026-03-14 03:38:41.727Z	325.763° NNW	14.806°	2026-03-14 03:40:41.727Z	350.945° N
8 mins	2026-03-14 10:27:41.727Z	339.673° N	2026-03-14 10:30:41.727Z	34.876° NE	40.883°	2026-03-14 10:35:41.727Z	136.836° SSE
4 mins	2026-03-14 12:09:41.727Z	274.775° WNW	2026-03-14 12:11:41.727Z	246.879° WSW	14.881°	2026-03-14 12:13:41.727Z	221° SW

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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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CAUTION: Conjunctions in this section are generated from low-fidelity TLE screenings

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Check out SL-3 DEB, 21126 on other resources

View SL-3 DEB, 21126 on Heavens-Above

View SL-3 DEB, 21126 on Keep Track

View SL-3 DEB, 21126 on Celestrak

View SL-3 DEB, 21126 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.

SL-3 DEB, 21126

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 12 hours ago

TLE from 12 hours ago

TLE epoch observation values (Epoch: 2026-03-13T08:16:07.735Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #53 in the year 1964 (1964-08-28 UTC)

SL-3 DEB Visibility forecast

Co-orbital & Co-planar RSOs

Check out SL-3 DEB, 21126 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 12 hours ago