CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1986-0168
SL-6 R/B(2)
SL-6 R/B(2) (NORAD 7178) re-entered Earth’s atmosphere on 17 April 1986, after 12 years, 4 months in orbit.
Official date
NORAD number
7178
International designator
1973-097D
Object type
Rocket body
Country
USSR
Launched
30 Nov 1973Plesetsk Cosmodrome
Re-entered (UTC)
17 Apr 1986UTC calendar day
Time in orbit
12 years, 4 months4,521 days
How it ended
Re-entered (natural decay)
Latitude range
63.4°N to 63.4°SFinal inclination 63.4°
Mass
4,500 kg
Where it came down
Latitude band its orbit allowedExact position not recorded
No position was recorded for this re-entry. Its final orbit, inclined at 63.4°, allowed a re-entry anywhere between 63.4°N and 63.4°S.
Life in orbit
12 years, 4 monthsSL-6 R/B(2)’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 17 Apr 1986
2 entriesFrom the same launch
1973-097
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1986-0168
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1986-0168
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.