Tracking 33200 objects as of 18-Feb-2026
HD Live streaming from Space Station
objects crossing your sky now

SL-8 R/B

Track SL-8 R/B now!
10-day predictions


NORAD ID: 10521
Int'l Code: 1977-119B
Perigee: 744.0 km
Apogee: 771.6 km
Inclination: 74.0 °
Period: 99.8 minutes
Semi major axis: 7128 km
RCS: 4.5103 m2 (large)
Launch date: December 16, 1977
Source: Commonwealth of Independent States (former USSR) (CIS)
Launch site: PLESETSK MISSILE AND SPACE COMPLEX (PKMTR)

Note: This is a ROCKET BODY
Your satellite tracking list
Your tracking list is empty




NASA's NSSDC Master Catalog

Two Line Element Set (TLE):
1 10521U 77119B   26048.47870346  .00000292  00000-0  96265-4 0  9998
2 10521  74.0276 161.0119 0019330 123.4773 236.8234 14.42380366528201
Source of the keplerian elements: AFSPC