SL-8 R/B

Satellite information

Favourite Embed

Satellite Type and Status

ROCKET BODYIN ORBIT

Key statistics

Satellite SL-8 R/B at a glance.

Uptime

17537

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: 1977-059B

Object number (NORAD): 10121

Object ID (CCSDS): 10121

Country: COMMONWEALTH OF INDEPENDENT STATES (CIS)

Current information (Y/N): Y

RCS size: LARGE

Orbital parameters

Period: 100.196 minutes

Inclination: 74.0459 deg

SMA: 7145.96 km

Apoapsis: 780.31 km

Periapsis: 755.34 km

RAAN: 135.3326 deg

Eccentricy: 0.0017471

Argument of periapsis: 123.08 deg

Mean anomaly: 237.2034 deg

Mean motion: 14.37182441 rev/day

Mean motion (dot): 0.00000134 rev/day²

B* drag term: 0.000053841 1/R_Earth

Two-line elements (TLE)

Creation date: July 5, 2025, 11:06 p.m.

Reference frame: TEME

Reference center: EARTH

Epoch: July 5, 2025, 9:54 p.m. UTC

TLE line 0: 0 SL-8 R/B

TLE line 1: 1 10121U 77059B 25186.91293443 .00000134 00000-0 53841-4 0 9993

TLE line 2: 2 10121 74.0459 135.3326 0017471 123.0800 237.2034 14.37182441512029

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
SCOUT X-1 DEB	LEO	2025-02-13 09:23:50	0.0001449994	29.0 (m)	DEBRIS
NOAA 16 DEB	SSO	2024-11-09 13:39:57	0.0001036795	564.0 (m)	DEBRIS
FENGYUN 1C DEB	SSO	2024-08-29 03:09:16	0.0001064203	890.0 (m)	DEBRIS
SL-14 DEB	LEO	2024-07-04 15:59:03	0.0002441375	687.0 (m)	DEBRIS
COSMOS 2251 DEB	LEO	2024-07-01 04:31:35	0.0001149323	1000.0 (m)	DEBRIS

Associated space launch

Military communications satellite

SL-8 R/B was lifted into orbit during the mission ‘Kosmos-3M | Strela-2M 15’, on board a Kosmos-3M space rocket.

The launch took place on July 1, 1977, 11:52 a.m. from 132/1 (132L).

For more information about the launch, click the button.

Kosmos-3M | Strela-2M 15

Agency: N/A

Status: Launch Successful

Launch date: July 1, 1977, 11:52 a.m. UTC

Rocket: Kosmos-3M

Launch pad: 132/1 (132L)

Location: Plesetsk Cosmodrome, Russian Federation

...

Go to the launch

Latest news about this satellite

There are no fresh news available about this satellite. Check back as we update our databases every day.

Return to all satellites

Embed the widget

Just copy the snippet below and paste it as HTML in your article, presentation, e-mail, blog post or website.

<iframe src="https://obdh.space/embed/satcat/10121/" width="400" height="720" frameborder="0"></iframe>

Real-time statistics and tracking

The widget will always be up to date. All data, statistics and tracking map are automatically refreshed in real-time. Check the examples below!

Widget preview

Newsletter sign-up

Weekly statistics, charts and insights to help you stay on top of the space industry.