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

14808

Days in orbit

Revolutions

≈ 14.2

Per day

Orbit

LEO

Low Earth Orbit

Inclination

71.1

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: 1985-042D

Object number (NORAD): 15772

Object ID (CCSDS): 15772

Country: COMMONWEALTH OF INDEPENDENT STATES (CIS)

Current information (Y/N): Y

RCS size: LARGE

Orbital parameters

Period: 101.269 minutes

Inclination: 71.1085 deg

SMA: 7196.894 km

Apoapsis: 845.828 km

Periapsis: 791.69 km

RAAN: 269.7257 deg

Eccentricy: 0.00376118

Argument of periapsis: 260.3174 deg

Mean anomaly: 273.0624 deg

Mean motion: 14.2195257 rev/day

Mean motion (dot): 0.00000116 rev/day²

B* drag term: 0.000073787876 1/R_Earth

Two-line elements (TLE)

Creation date: Dec. 14, 2025, 3:07 a.m.

Reference frame: TEME

Reference center: EARTH

Epoch: Dec. 13, 2025, 1 p.m. UTC

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

TLE line 1: 1 15772U 85042D 25347.54167873 .00000116 00000-0 73788-4 0 9998

TLE line 2: 2 15772 71.1085 269.7257 0037612 260.3174 273.0624 14.21952570102144

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
CZ-6A DEB	LEO	2025-10-30 14:17:30	0.0001926351	258.0 (m)	DEBRIS
FENGYUN 1C DEB	SSO	2025-10-21 23:28:41	0.0002321315	453.0 (m)	DEBRIS
FENGYUN 1C DEB	SSO	2025-05-25 14:49:14	0.0001620001	424.0 (m)	DEBRIS
NOAA 16 DEB	SSO	2025-04-20 21:56:38	0.0001058361	258.0 (m)	DEBRIS
FENGYUN 1C DEB	SSO	2024-06-19 02:16:38	0.000101872	94.0 (m)	DEBRIS

Associated space launch

Second generation ELING satellite

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

The launch took place on May 30, 1985, 2:59 p.m. from 200/40.

For more information about the launch, click the button.

Proton | Tselina-2 2

Agency: N/A

Status: Launch Successful

Launch date: May 30, 1985, 2:59 p.m. UTC

Rocket: Proton

Launch pad: 200/40

Location: Baikonur Cosmodrome, Republic of Kazakhstan

...

Go to the launch

Latest news about this satellite

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