SL-12 R/B(2)

Satellite information

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Satellite Type and Status

ROCKET BODYIN ORBIT

Key statistics

Satellite SL-12 R/B(2) at a glance.

Uptime

12630

Days in orbit

Revolutions

≈ 2.1

Per day

Orbit

MEO

Medium Earth Orbit

Inclination

64.7

Latest

Satellite identification and parameters

Extended collection of information and parameters for SL-12 R/B(2).

Object identification

Identified? True

Debris? False

Object name: SL-12 R/B(2)

International designator: 1990-110F

Object number (NORAD): 21011

Object ID (CCSDS): 21011

Country: COMMONWEALTH OF INDEPENDENT STATES (CIS)

Current information (Y/N): Y

RCS size: LARGE

Orbital parameters

Period: 675.226 minutes

Inclination: 64.7325 deg

SMA: 25495.277 km

Apoapsis: 19130.509 km

Periapsis: 19103.774 km

RAAN: 82.311 deg

Eccentricy: 0.0005243

Argument of periapsis: 251.9194 deg

Mean anomaly: 288.9135 deg

Mean motion: 2.13261849 rev/day

Mean motion (dot): -0.00000045 rev/day²

B* drag term: 0.0 1/R_Earth

Two-line elements (TLE)

Creation date: July 6, 2025, 10:26 p.m.

Reference frame: TEME

Reference center: EARTH

Epoch: July 6, 2025, 1:57 p.m. UTC

TLE line 0: 0 SL-12 R/B(2)

TLE line 1: 1 21011U 90110F 25187.58141529 -.00000045 00000-0 00000+0 0 9993

TLE line 2: 2 21011 64.7325 82.3110 0005243 251.9194 288.9135 2.13261849269340

Live tracking on map

Real-time ground track for satellite SL-12 R/B(2).

In-orbit conjunctions

A list of the most updated potential collisions computed for object SL-12 R/B(2).

Target	Orbit	TCA	Probability of collision	Miss distance	Type
SL-12 R/B(2)	MEO	2025-04-20 23:24:38	TBA	4730.0 (m)	ROCKET BODY
SL-12 R/B(2)	MEO	2024-08-10 14:46:15	TBA	4069.0 (m)	ROCKET BODY
COSMOS 2080 (GLONASS)	MEO	2024-07-03 18:57:53	TBA	1269.0 (m)	PAYLOAD
COSMOS 1988 (GLONASS)	MEO	2024-06-16 06:06:26	TBA	2863.0 (m)	PAYLOAD

Associated space launch

GLONASS navigation satellites

SL-12 R/B(2) was lifted into orbit during the mission ‘Proton | Uragan 39 to 41’, on board a Proton space rocket.

The launch took place on Dec. 8, 1990, 2:43 a.m. from 200/40.

For more information about the launch, click the button.

Proton | Uragan 39 to 41

Agency: N/A

Status: Launch Successful

Launch date: Dec. 8, 1990, 2:43 a.m. UTC

Rocket: Proton

Launch pad: 200/40

Location: Baikonur Cosmodrome, Republic of Kazakhstan

...

Go to the launch

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