CERTIFICATE OF RE-ENTRYOrbital Register™ · by Orbital Radar™
Entry no.
1991-0112
Kosmos-2106 SS 4
ESO
Kosmos-2106 SS 4 (NORAD 21070) re-entered Earth’s atmosphere on 10 March 1991, after 3 months in orbit.
Official dateIdentified from the historical record
NORAD number
21070
International designator
1990-104F
Object type
Spacecraft
Official listing
COSMOS 2106 DEBListed as a fragment
Country
USSR
Launched
28 Nov 1990Plesetsk Cosmodrome
Re-entered (UTC)
10 Mar 1991UTC calendar day
Time in orbit
3 months102 days
How it ended
Re-entered (natural decay)
Latitude range
82.5°N to 82.5°SFinal inclination 82.5°
Mass
5 kg
Operator
PVO
Built by
Southern SDB
Bus
ESO
Programme
ESO
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 82.5°, allowed a re-entry anywhere between 82.5°N and 82.5°S.
Life in orbit
3 monthsKosmos-2106 SS 4’s lowest and highest points above Earth, week by week, from its tracking history.
Also ended on 10 Mar 1991
2 entriesFrom the same launch
1990-1041991-0079Kosmos-2106 SS 11991-0083Kosmos-2106 SS 21991-0105Kosmos-2106 SS 31991-0113Kosmos-2106 SS 61991-0115Kosmos-2106 SS 51991-0270Kosmos-2106 SS 81991-0271Kosmos-2106 SS 91991-0272Kosmos-2106 SS 101991-0279Kosmos-2106 SS 121991-0281Kosmos-2106 SS 71991-0282Kosmos-2106 SS 161991-0283Kosmos-2106 SS 17
Entered in the Orbital Register™, founding volume, September 2026.
Record version 1 · No corrections · orbitalradar.com/register/1991-0112
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.
Record version 1 · No corrections · orbitalradar.com/register/1991-0112
© 2026 Orbital Radar. Cite this entry by its number; the register itself may not be copied.