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

13189

Days in orbit

Revolutions

≈ 2.1

Per day

Orbit

MEO

Medium Earth Orbit

Inclination

65.1

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: 1989-039E

Object number (NORAD): 20028

Object ID (CCSDS): 20028

Country: COMMONWEALTH OF INDEPENDENT STATES (CIS)

Current information (Y/N): Y

RCS size: LARGE

Orbital parameters

Period: 674.519 minutes

Inclination: 65.1101 deg

SMA: 25477.477 km

Apoapsis: 19119.257 km

Periapsis: 19079.426 km

RAAN: 321.0152 deg

Eccentricy: 0.0007817

Argument of periapsis: 284.8172 deg

Mean anomaly: 77.7231 deg

Mean motion: 2.13485383 rev/day

Mean motion (dot): -0.00000066 rev/day2

B* drag term: 0.0 1/REarth

Two-line elements (TLE)

Creation date: July 9, 2025, 2:22 a.m.

Reference frame: TEME

Reference center: EARTH

Epoch: July 8, 2025, 5:46 p.m. UTC

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

TLE line 1: 1 20028U 89039E 25189.74095455 -.00000066 00000-0 00000-0 0 9998

TLE line 2: 2 20028 65.1101 321.0152 0007817 284.8172 77.7231 2.13485383267006

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 2025-02-04 17:49:03 TBA 1553.0 (m) ROCKET BODY
COSMOS 1946 (GLONASS) MEO 2024-11-24 15:48:33 TBA 3515.0 (m) PAYLOAD
COSMOS 2234 (GLONASS) MEO 2024-09-03 22:00:31 TBA 4120.0 (m) PAYLOAD

Associated space launch

GLONASS navigation satellites

SL-12 R/B(2) was lifted into orbit during the mission ‘Proton | Uragan 34 & 35’, on board a Proton space rocket.

The launch took place on May 31, 1989, 8:31 a.m. from 200/40.

For more information about the launch, click the button.

Launch to space Proton | Uragan 34 & 35
Proton | Uragan 34 & 35

Agency: N/A

Status: Launch Successful

Launch date: May 31, 1989, 8:31 a.m. UTC

Rocket: Proton

Launch pad: 200/40

Location: Baikonur Cosmodrome, Republic of Kazakhstan

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