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

13369

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: 1989-005B

Object number (NORAD): 19770

Object ID (CCSDS): 19770

Country: COMMONWEALTH OF INDEPENDENT STATES (CIS)

Current information (Y/N): Y

RCS size: LARGE

Orbital parameters

Period: 99.99 minutes

Inclination: 74.0434 deg

SMA: 7136.136 km

Apoapsis: 761.948 km

Periapsis: 754.055 km

RAAN: 277.9871 deg

Eccentricy: 0.00055303

Argument of periapsis: 322.365 deg

Mean anomaly: 211.4263 deg

Mean motion: 14.40151139 rev/day

Mean motion (dot): 0.0000037 rev/day²

B* drag term: 0.00012547564 1/R_Earth

Two-line elements (TLE)

Creation date: Sept. 3, 2025, 2:21 a.m.

Reference frame: TEME

Reference center: EARTH

Epoch: Sept. 2, 2025, 8:42 p.m. UTC

TLE line 0: 0 SL-8 R/B

TLE line 1: 1 19770U 89005B 25245.86277939 .00000370 00000-0 12548-3 0 9998

TLE line 2: 2 19770 74.0434 277.9871 0005530 322.3650 211.4263 14.40151139917783

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
CZ-6A DEB	SSO	2025-03-11 13:54:09	0.000194653	164.0 (m)	DEBRIS
CZ-6A DEB	SSO	2025-02-17 13:25:55	0.0004445101	115.0 (m)	DEBRIS
COSMOS 2251 DEB	LEO	2024-07-31 05:09:31	0.00109678	38.0 (m)	DEBRIS
DMSP 5D-2 F13 DEB	SSO	2024-06-21 19:22:13	0.000510541	141.0 (m)	DEBRIS
FENGYUN 1C DEB	SSO	2024-06-04 21:45:41	0.0001843903	133.0 (m)	DEBRIS

Associated space launch

Military communications satellite

SL-8 R/B was lifted into orbit during the mission ‘Kosmos-3M | Strela-2M 46’, on board a Kosmos-3M space rocket.

The launch took place on Jan. 26, 1989, 3:36 p.m. from 132/2.

For more information about the launch, click the button.

Kosmos-3M | Strela-2M 46

Agency: N/A

Status: Launch Successful

Launch date: Jan. 26, 1989, 3:36 p.m. UTC

Rocket: Kosmos-3M

Launch pad: 132/2

Location: Plesetsk Cosmodrome, Russian Federation

...

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