CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
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Entry no.
1991-0193

SL-12 R/B(AUX MOTOR)

SL-12 R/B(AUX MOTOR) (NORAD 18579) re-entered Earth’s atmosphere on 6 May 1991, after 3 years, 5 months in orbit.

Official date
NORAD number
18579
International designator
1987-096E
Object type
Rocket body
Country
USSR
Launched
26 Nov 1987Baikonur Cosmodrome
Re-entered (UTC)
6 May 1991UTC calendar dayAlso recorded as 12 Jul 1989
Time in orbit
3 years, 5 months1,257 days
How it ended
Re-entered (natural decay)
Latitude range
46.5°N to 46.5°SFinal inclination 46.5°
Mass
120 kg

Where it came down

Latitude band its orbit allowed
Exact position not recorded

No position was recorded for this re-entry. Its final orbit, inclined at 46.5°, allowed a re-entry anywhere between 46.5°N and 46.5°S.

Life in orbit

3 years, 5 months

SL-12 R/B(AUX MOTOR)’s lowest and highest points above Earth, week by week, from its tracking history.

Also ended on 6 May 1991

4 entries
1991-0192COSMOS 1511991-0195STS 391991-0196IBSS1991-0194DELTA 2 R/B(2) (PAM-D)

From the same launch

1987-096
1987-0568SL-12 R/B(1)1988-0493SL-12 R/B(AUX MOTOR)
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Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1991-0193
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