SL-16 DEB, 18417

Orbit data source: Space-Track

SL-16 DEB, 18417 is space debris in LEO originally from a launch on Wed, 18 Mar 1987 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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https://www.satcat.com/sats-embedded/18417?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

18417, 1987-027D

Orbit

LEO

Country

CIS

Related business

Russian Space Forces (RU)

Manufacturer

Yuzhnoe

Mission

Spacecraft

Bus & Motor

SEP MOTOR COVER, Unknown motor

Mass

~0 kg wet, ~1 kg dry

Launch date (UTC)

1987-03-18 (39 years ago)

Launch vehicle

Unknown

Launch site

Tyuratam Missile And Space Complex (TTMTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

CONE, 0.1 m

Radar Cross Section

Medium (>0.1 m² and <1 m²)

Expand to show TLE details & history
Last TLE update: 6 hours ago

TLE from 6 hours ago

0 SL-16 DEB
1 18417U 87027D   26255.26162299  .00000026  00000-0  62163-4 0  9992
2 18417  70.9994 172.0730 0200336 154.1711  12.2796 13.74671386979485

Epoch: 2026-09-12T06:16Z

TLE epoch observation values (Epoch: 2026-09-12T06:16:44.226Z)

Latitude

12.29628°

Longitude

-97.66591°

Altitude

840.471 km

Speed

7.506 km/s

True Right ascension

23h 11m 09s

True Declination

12° 13' 33"

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

05:10:15

Azimuth

Unknown

Elevation

Unknown

Doppler factor

Unknown

Orbital elements

Apogee altitude

1,128.237 km

Perigee altitude

833.385 km

Semi-major axis

7,358.948 km

Eccentricity

0.02003

Inclination

70.9994°

RAAN

172.073°

Arg. of periapsis

154.1711°

True anomaly

12.78008°

Mean anomaly

12.2796°

Eccentric anomaly

12.5286°

Mean motion

3.43811 °/min

Orbital period

104.71 mins

BSTAR

0.000062163

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Other satellites on launch #27 in the year 1987 (1987-03-18 UTC)

SL-16 DEB, 43323 (Decayed)

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SL-16 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.
12 mins	2026-09-12 19:32:34.737Z	186.303° SSW	2026-09-12 19:39:34.737Z	88.379° E	59.483°	2026-09-12 19:44:34.737Z	31.984° NE
9 mins	2026-09-12 21:22:34.737Z	260.492° W	2026-09-12 21:26:34.737Z	304.878° NW	24.989°	2026-09-12 21:31:34.737Z	358.595° N
8 mins	2026-09-13 04:45:34.737Z	3.74° NNE	2026-09-13 04:49:34.737Z	65.597° ENE	32.03°	2026-09-13 04:53:34.737Z	117.434° SE
8 mins	2026-09-13 06:32:34.737Z	310.544° NW	2026-09-13 06:36:34.737Z	248.84° W	32.857°	2026-09-13 06:40:34.737Z	196.84° SSW

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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-16 DEB, 18417 on other resources

View SL-16 DEB, 18417 on Heavens-Above

View SL-16 DEB, 18417 on Keep Track

View SL-16 DEB, 18417 on Celestrak

View SL-16 DEB, 18417 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-16 DEB, 18417

Orbit data source: Space-Track

Expand to show TLE details & historyLast TLE update: 6 hours ago

TLE from 6 hours ago

TLE epoch observation values (Epoch: 2026-09-12T06:16:44.226Z)

Visualization orbit readout

Visualization observer readout

Orbital elements

Other satellites on launch #27 in the year 1987 (1987-03-18 UTC)

SL-16 DEB Visibility forecast

Co-orbital & Co-planar RSOs

Check out SL-16 DEB, 18417 on other resources

Documentation

Expand to show TLE details & history
Last TLE update: 6 hours ago