Launch Details

Launched	15 September 1987
Flight ended	–
Status	Non-operational
Launch site	Tyuratam Missile and Space Center, Kazakhstan (Also known as Baikonur Cosmodrome)
Owner	Commonwealth of Independent States (former USSR)
NORAD ID	18355
COSPAR ID	1987-079A
Alternative names	GLONASS GLONASS 20
Observing

Current orbital elements

Inclination	65.781°
Eccentricity	0.00052
RA ascending node	22.057 hr
Argument perigee	246.883°
Mean anomaly	86.567°
Orbital period	675.736 min
Epoch of osculation	21 Jun 2025, 12:15

See historical orbital elements »

Derived Quantities

Min Altitude	19123.8 km
Mean Altitude	19137.1 km
Peak Altitude	19150.4 km

Launched alongside

COSMOS 1884 COSMOS 1885 SL-12 PLAT SL-12 R/B(1) SL-12 R/B(2) SL-12 R/B SL-12 R/B SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB SL-12 DEB