Launch Details

Launched	9 January 1989
Flight ended	–
Status	Operational
Categories	Geodetic Active satellites
Launch site	Tyuratam Missile and Space Center, Kazakhstan (Also known as Baikonur Cosmodrome)
Owner	Commonwealth of Independent States (former USSR)
NORAD ID	19751
COSPAR ID	1989-001C
Alternative names	ETALON 1
Observing

Current orbital elements

Inclination	64.775°
Eccentricity	0.00234
RA ascending node	5.478 hr
Argument perigee	216.779°
Mean anomaly	170.963°
Orbital period	675.561 min
Epoch of osculation	29 Aug 2025, 22:22

See historical orbital elements »

Derived Quantities

Min Altitude	19072.9 km
Mean Altitude	19132.7 km
Peak Altitude	19192.5 km

Launched alongside

COSMOS 1987 COSMOS 1988 SL-12 R/B(1) SL-12 DEB 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