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

14293

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: 1986-070B

Object number (NORAD): 16953

Object ID (CCSDS): 16953

Country: COMMONWEALTH OF INDEPENDENT STATES (CIS)

Current information (Y/N): Y

RCS size: LARGE

Orbital parameters

Period: 100.089 minutes

Inclination: 74.013 deg

SMA: 7140.883 km

Apoapsis: 772.155 km

Periapsis: 753.341 km

RAAN: 45.3142 deg

Eccentricy: 0.00131737

Argument of periapsis: 259.9546 deg

Mean anomaly: 100.0122 deg

Mean motion: 14.38715279 rev/day

Mean motion (dot): 0.00000416 rev/day²

B* drag term: 0.00014414344 1/R_Earth

Two-line elements (TLE)

Creation date: Oct. 28, 2025, 2:18 a.m.

Reference frame: TEME

Reference center: EARTH

Epoch: Oct. 27, 2025, 6:26 p.m. UTC

TLE line 0: 0 SL-8 R/B

TLE line 1: 1 16953U 86070B 25300.76874689 .00000416 00000-0 14414-3 0 9998

TLE line 2: 2 16953 74.0130 45.3142 0013174 259.9546 100.0122 14.38715279 50778

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
DMSP 5D-2 F13 DEB	SSO	2025-08-24 10:19:20	0.0001167686	374.0 (m)	DEBRIS
FENGYUN 1C DEB	SSO	2025-07-25 11:08:22	0.0001689238	32.0 (m)	DEBRIS
COSMOS 1867 COOLANT	LEO	2025-01-21 23:31:31	0.0002162507	191.0 (m)	DEBRIS
COSMOS 2251 DEB	LEO	2024-09-28 02:16:17	0.0002613327	568.0 (m)	DEBRIS
CZ-6A DEB	SSO	2024-08-28 22:40:05	0.0002544951	401.0 (m)	DEBRIS

Associated space launch

Military communications satellite

SL-8 R/B was lifted into orbit during the mission ‘Kosmos-3M | Strela-2M 40’, on board a Kosmos-3M space rocket.

The launch took place on Sept. 10, 1986, 1:45 a.m. from 133/3 (133L).

For more information about the launch, click the button.

Kosmos-3M | Strela-2M 40

Agency: N/A

Status: Launch Successful

Launch date: Sept. 10, 1986, 1:45 a.m. UTC

Rocket: Kosmos-3M

Launch pad: 133/3 (133L)

Location: Plesetsk Cosmodrome, Russian Federation

...

Go to the launch

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