SL-12 R/B(2), 17872

Orbit data source: Space-Track

SL-12 R/B(2), 17872 is space debris in GEO originally from a launch on Sat, 11 Sep 1976 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.

Not visible in the next 10 days

Iframe embed code

<iframe src="https://www.satcat.com/sats-embedded/17872?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/17872?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

17872, 1976-092F

Orbit

GEO

Country

CIS

Related business

Russian Strategic Rocket Forces (RU)

Manufacturer

NPO Energiya

Mission

Spacecraft

Bus & Motor

BLOK DM, Unknown motor

Mass

2,440 kg wet, 2,440 kg dry

Launch date (UTC)

1976-09-11 (50 years ago)

Launch vehicle

Unknown

Launch site

Tyuratam Missile And Space Complex (TTMTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Unknown

Radar Cross Section

Large (>1 m²)

Expand to show TLE details & history
Last TLE update: 8 hours ago

TLE from 8 hours ago

0 SL-12 R/B(2)
1 17872U 76092F   26130.12666322 -.00000047  00000-0  00000+0 0  9990
2 17872   3.5584 270.6818 0015670 195.2289 240.2569  1.00221080118540

Epoch: 2026-05-10T03:02Z

TLE epoch observation values (Epoch: 2026-05-10T03:02:23.702Z)

Latitude

3.46342°

Longitude

72.4367°

Altitude

35,832.555 km

Speed

3.072 km/s

True Right ascension

23h 03m 52s

True Declination

3° 27' 36"

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

18:56:04

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

35,867.975 km

Perigee altitude

35,735.783 km

Semi-major axis

42,180.016 km

Eccentricity

0.00157

Inclination

3.5584°

RAAN

270.6818°

Arg. of periapsis

195.2289°

True anomaly

240.10114°

Mean anomaly

240.2569°

Eccentric anomaly

240.17901°

Mean motion

0.25054 °/min

Orbital period

1,436.88 mins

BSTAR

Loading maneuver chart data...

Computing Atmospheric mass density...

Loading historical data...

Other satellites on launch #92 in the year 1976 (1976-09-11 UTC)

SL-12 PLAT, 9418 (Decayed)

SL-12 R/B(AUX MOTOR), 9441 (Decayed)

SL-12 R/B(AUX MOTOR), 9440 (Decayed)

RADUGA 2, 9416

SL-12 R/B(1), 9417 (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

SL-12 R/B(2) Visibility

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.
SL-12 R/B(2) is likely not visible in the next few days.

Loading historical data...

17872 neighbors

Authenticating...

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 SL-12 R/B(2), 17872 on other resources

View SL-12 R/B(2), 17872 on Heavens-Above

View SL-12 R/B(2), 17872 on Keep Track

View SL-12 R/B(2), 17872 on Celestrak

View SL-12 R/B(2), 17872 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-12 R/B(2), 17872

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 8 hours ago

TLE from 8 hours ago

TLE epoch observation values (Epoch: 2026-05-10T03:02:23.702Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #92 in the year 1976 (1976-09-11 UTC)

SL-12 R/B(2) Visibility

17872 neighbors

Co-orbital & Co-planar RSOs

Check out SL-12 R/B(2), 17872 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 8 hours ago