SL-16 R/B

Satellite information

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Satellite Type and Status

ROCKET BODYIN ORBIT

Key statistics

Satellite SL-16 R/B at a glance.

Uptime

13934

Days in orbit

Revolutions

≈ 14.2

Per day

Orbit

LEO

Low Earth Orbit

Inclination

71.0

Latest

Satellite identification and parameters

Extended collection of information and parameters for SL-16 R/B.

Object identification

Identified? True

Debris? False

Object name: SL-16 R/B

International designator: 1987-041B

Object number (NORAD): 17974

Object ID (CCSDS): 17974

Country: COMMONWEALTH OF INDEPENDENT STATES (CIS)

Current information (Y/N): Y

RCS size: LARGE

Orbital parameters

Period: 101.581 minutes

Inclination: 71.0061 deg

SMA: 7211.641 km

Apoapsis: 844.664 km

Periapsis: 822.347 km

RAAN: 193.9332 deg

Eccentricy: 0.0015473

Argument of periapsis: 228.8279 deg

Mean anomaly: 300.1207 deg

Mean motion: 14.17593241 rev/day

Mean motion (dot): 0.00000236 rev/day²

B* drag term: 0.00013978 1/R_Earth

Two-line elements (TLE)

Creation date: July 5, 2025, 5:45 p.m.

Reference frame: TEME

Reference center: EARTH

Epoch: July 5, 2025, 12:19 p.m. UTC

TLE line 0: 0 SL-16 R/B

TLE line 1: 1 17974U 87041B 25186.51380664 .00000236 00000-0 13978-3 0 9995

TLE line 2: 2 17974 71.0061 193.9332 0015473 228.8279 300.1207 14.17593241973057

Live tracking on map

Real-time ground track for satellite SL-16 R/B.

In-orbit conjunctions

A list of the most updated potential collisions computed for object SL-16 R/B.

Target	Orbit	TCA	Probability of collision	Miss distance	Type
FENGYUN 1C DEB	SSO	2025-01-06 19:27:38	0.004406191	49.0 (m)	DEBRIS
FENGYUN 1C DEB	SSO	2024-10-29 02:23:07	0.0001650424	342.0 (m)	DEBRIS
NOAA 16 DEB	SSO	2024-10-14 20:10:48	0.0001426608	713.0 (m)	DEBRIS
CZ-4 DEB	SSO	2024-08-12 20:19:00	0.0001470319	106.0 (m)	DEBRIS
FENGYUN 1C DEB	SSO	2024-07-12 03:43:47	0.0001096995	77.0 (m)	DEBRIS

Associated space launch

Second generation ELING satellite

SL-16 R/B was lifted into orbit during the mission ‘Zenit-2 | Tselina-2 4’, on board a Zenit-2 space rocket.

The launch took place on May 13, 1987, 5:40 a.m. from 45/1.

For more information about the launch, click the button.

Zenit-2 | Tselina-2 4

Agency: N/A

Status: Launch Successful

Launch date: May 13, 1987, 5:40 a.m. UTC

Rocket: Zenit-2

Launch pad: 45/1

Location: Baikonur Cosmodrome, Republic of Kazakhstan

...

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