SL-8 R/B

Satellite information

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Satellite Type and Status

ROCKET BODYIN ORBIT

Key statistics

Satellite SL-8 R/B at a glance.

Uptime

13732

Days in orbit

Revolutions

≈ 14.4

Per day

Orbit

LEO

Low Earth Orbit

Inclination

74.0

Latest

Satellite identification and parameters

Extended collection of information and parameters for SL-8 R/B.

Object identification

Identified? True

Debris? False

Object name: SL-8 R/B

International designator: 1987-098B

Object number (NORAD): 18586

Object ID (CCSDS): 18586

Country: COMMONWEALTH OF INDEPENDENT STATES (CIS)

Current information (Y/N): Y

RCS size: LARGE

Orbital parameters

Period: 100.129 minutes

Inclination: 74.0067 deg

SMA: 7142.755 km

Apoapsis: 779.462 km

Periapsis: 749.777 km

RAAN: 277.7436 deg

Eccentricy: 0.002078

Argument of periapsis: 356.4363 deg

Mean anomaly: 3.6639 deg

Mean motion: 14.38149928 rev/day

Mean motion (dot): 0.00000135 rev/day2

B* drag term: 0.000053068 1/REarth

Two-line elements (TLE)

Creation date: July 5, 2025, 5:45 p.m.

Reference frame: TEME

Reference center: EARTH

Epoch: July 5, 2025, 2:36 p.m. UTC

TLE line 0: 0 SL-8 R/B

TLE line 1: 1 18586U 87098B 25186.60850991 .00000135 00000-0 53068-4 0 9995

TLE line 2: 2 18586 74.0067 277.7436 0020780 356.4363 3.6639 14.38149928969445

Live tracking on map

Real-time ground track for satellite SL-8 R/B.

In-orbit conjunctions

A list of the most updated potential collisions computed for object SL-8 R/B.

Target Orbit TCA Probability of collision Miss distance Type
NOAA 16 DEB SSO 2025-04-22 07:46:33 0.0001208686 612.0 (m) DEBRIS
CZ-6A DEB SSO 2025-01-18 00:11:43 0.0002488867 102.0 (m) DEBRIS
NOAA 16 DEB SSO 2024-11-26 20:59:01 0.0001650863 183.0 (m) DEBRIS
COSMOS 2491 DEB * LEO 2024-08-18 22:05:07 0.0002786016 797.0 (m) DEBRIS
FENGYUN 1C DEB SSO 2024-07-06 02:46:21 0.0001843713 942.0 (m) DEBRIS

Associated space launch

Military communications satellite

SL-8 R/B was lifted into orbit during the mission ‘Kosmos-3M | Strela-2M 43’, on board a Kosmos-3M space rocket.

The launch took place on Dec. 1, 1987, 2:15 p.m. from 133/3 (133L).

For more information about the launch, click the button.

Launch to space Kosmos-3M | Strela-2M 43
Kosmos-3M | Strela-2M 43

Agency: N/A

Status: Launch Successful

Launch date: Dec. 1, 1987, 2:15 p.m. UTC

Rocket: Kosmos-3M

Launch pad: 133/3 (133L)

Location: Plesetsk Cosmodrome, Russian Federation

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