Key statistics
Satellite ISS (ZARYA) at a glance.
Uptime
9660
Days in orbit
Revolutions
≈ 15.5
Per day
Orbit
LEO
Low Earth Orbit
Inclination
51.6
Latest
Satellite identification and parameters
Extended collection of information and parameters for ISS (ZARYA).
Object identification
Identified? True
Debris? False
Object name: ISS (ZARYA)
International designator: 1998-067A
Object number (NORAD): 25544
Object ID (CCSDS): 25544
Country: INTERNATIONAL SPACE STATION (ISS)
Current information (Y/N): Y
RCS size: LARGE
Orbital parameters
Period: 92.945 minutes
Inclination: 51.6362 deg
SMA: 6796.911 km
Apoapsis: 420.092 km
Periapsis: 417.46 km
RAAN: 177.4781 deg
Eccentricy: 0.0001936
Argument of periapsis: 78.0739 deg
Mean anomaly: 64.35 deg
Mean motion: 15.49299518 rev/day
Mean motion (dot): 0.00054521 rev/day2
B* drag term: 0.00098058 1/REarth
Two-line elements (TLE)
Creation date: May 2, 2025, 12:06 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: May 1, 2025, 4 p.m. UTC
TLE line 0: 0 ISS (ZARYA)
TLE line 1: 1 25544U 98067A 25121.66684921 .00054521 00000-0 98058-3 0 9993
TLE line 2: 2 25544 51.6362 177.4781 0001936 78.0739 64.3500 15.49299518507949
Live tracking on map
Real-time ground track for satellite ISS (ZARYA).
In-orbit conjunctions
There are no conjunctions computed for ISS (ZARYA), at the moment. Check back to stay up to date, as we update our databases every day.
Go to all conjunctionsAssociated space launch
The Zarya Control Module, also known by the technical term Functional Cargo Block and the Russian acronym FGB, was the first component launched for the International Space Station. This module was designed to provide the station's initial propulsion and power. The 19,323 kilogram pressurized module was launched on a Russian Proton rocket in November 1998.
ISS (ZARYA) was lifted into orbit during the mission ‘Proton | Zarya’, on board a Proton space rocket.
The launch took place on Nov. 20, 1998, 6:40 a.m. from 81/23 (81L).
For more information about the launch, click the button.
Proton | Zarya
Agency: N/A
Status: Launch Successful
Launch date: Nov. 20, 1998, 6:40 a.m. UTC
Rocket: Proton
Launch pad: 81/23 (81L)
Location: Baikonur Cosmodrome, Republic of Kazakhstan
...
Latest news about this satellite
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