COSMOS 991

Launch Details
Launched 27 February 1978
Flight ended
Status Unknown
Launch site Plesetsk Missile and Space Complex, Russia
Owner Commonwealth of Independent States (former USSR)
NORAD ID 10692
COSPAR ID 1978-022A
Observing

Current orbital elements

Inclination 82.987°
Eccentricity 0.00379
RA ascending node 2.915 hr
Argument perigee 90.169°
Mean anomaly 331.817°
Orbital period 104.616 min
Epoch of osculation 16 Jul 2024, 12:46

See historical orbital elements »

Derived Quantities

Min Altitude 955.7 km
Mean Altitude 983.6 km
Peak Altitude 1011.5 km

Orbital History

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Launched alongside

SL-8 R/B

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Latitude:
Longitude:
Timezone:

30.33°N
81.66°W
EDT

Color scheme