Key statistics
Satellite SS 2 at a glance.
Uptime
17537
Days in orbit
Revolutions
≈ 13.9
Per day
Orbit
LEO
Low Earth Orbit
Inclination
63.3
Latest
Satellite identification and parameters
Extended collection of information and parameters for SS 2.
Object identification
Identified? True
Debris? False
Object name: SS 2
International designator: 1977-112E
Object number (NORAD): 10544
Object ID (CCSDS): 10544
Country: UNITED STATES OF AMERICA (US)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 103.528 minutes
Inclination: 63.3346 deg
SMA: 7303.514 km
Apoapsis: 1314.007 km
Periapsis: 536.751 km
RAAN: 147.9291 deg
Eccentricy: 0.0532111
Argument of periapsis: 159.6922 deg
Mean anomaly: 202.6198 deg
Mean motion: 13.90928924 rev/day
Mean motion (dot): 0.0000248 rev/day2
B* drag term: 0.00064533 1/REarth
Two-line elements (TLE)
Creation date: Dec. 12, 2025, 7:16 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Dec. 11, 2025, 8:19 p.m. UTC
TLE line 0: 0 SS 2
TLE line 1: 1 10544U 77112E 25345.84677591 .00002480 00000-0 64533-3 0 9996
TLE line 2: 2 10544 63.3346 147.9291 0532111 159.6922 202.6198 13.90928924326333
Live tracking on map
Real-time ground track for satellite SS 2.
In-orbit conjunctions
A list of the most updated potential collisions computed for object SS 2.
Associated space launch
The Parcae satellites were passive ELINT satellites. MSD satellites were dispensers of triplets of ocean surveillance satellites.
SS 2 was lifted into orbit during the mission ‘Atlas F/MSD | Parcae 2A,B,C & MSD 2’, on board a Atlas F/MSD space rocket.
The launch took place on Dec. 8, 1977, 5:45 p.m. from Space Launch Complex 3W.
For more information about the launch, click the button.
Atlas F/MSD | Parcae 2A,B,C & MSD 2
Agency: N/A
Status: Launch Successful
Launch date: Dec. 8, 1977, 5:45 p.m. UTC
Rocket: Atlas F/MSD
Launch pad: Space Launch Complex 3W
Location: Vandenberg SFB, CA, USA
...
Latest news about this satellite
There are no fresh news available about this satellite. Check back as we update our databases every day.
Newsletter sign-up
Weekly statistics, charts and insights to help you stay on top of the space industry.
