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

16131

Days in orbit

Revolutions

≈ 14.4

Per day

Orbit

LEO

Low Earth Orbit

Inclination

74.1

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: 1981-041B

Object number (NORAD): 12443

Object ID (CCSDS): 12443

Country: COMMONWEALTH OF INDEPENDENT STATES (CIS)

Current information (Y/N): Y

RCS size: LARGE

Orbital parameters

Period: 100.288 minutes

Inclination: 74.0519 deg

SMA: 7150.314 km

Apoapsis: 776.182 km

Periapsis: 768.176 km

RAAN: 184.7763 deg

Eccentricy: 0.0005598

Argument of periapsis: 276.7757 deg

Mean anomaly: 83.2759 deg

Mean motion: 14.3586995 rev/day

Mean motion (dot): 0.00000175 rev/day²

B* drag term: 0.000069249 1/R_Earth

Two-line elements (TLE)

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

Reference frame: TEME

Reference center: EARTH

Epoch: July 5, 2025, 10:27 a.m. UTC

TLE line 0: 0 SL-8 R/B

TLE line 1: 1 12443U 81041B 25186.43599002 .00000175 00000-0 69249-4 0 9999

TLE line 2: 2 12443 74.0519 184.7763 0005598 276.7757 83.2759 14.35869950309473

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
COSMOS 1275 DEB	LEO	2025-06-17 09:50:02	0.0002550337	503.0 (m)	DEBRIS
DELTA 1 DEB	SSO	2025-02-22 04:06:08	0.0001187254	146.0 (m)	DEBRIS
FENGYUN 1C DEB	SSO	2024-10-31 12:28:47	0.0001862149	657.0 (m)	DEBRIS
CZ-6A DEB	SSO	2024-08-06 05:56:11	0.0001169232	270.0 (m)	DEBRIS
THOR ABLESTAR DEB	LEO	2024-08-05 11:35:44	0.0002060986	524.0 (m)	DEBRIS

Associated space launch

Military communications satellite

SL-8 R/B was lifted into orbit during the mission ‘Kosmos-3M | Strela-2M 24’, on board a Kosmos-3M space rocket.

The launch took place on May 7, 1981, 1:21 p.m. from 132/1 (132L).

For more information about the launch, click the button.

Kosmos-3M | Strela-2M 24

Agency: N/A

Status: Launch Successful

Launch date: May 7, 1981, 1:21 p.m. UTC

Rocket: Kosmos-3M

Launch pad: 132/1 (132L)

Location: Plesetsk Cosmodrome, Russian Federation

...

Go to the launch

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