Key statistics
Satellite ISS (ZARYA) at a glance.
Uptime
9752
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: 92.886 minutes
Inclination: 51.6361 deg
SMA: 6794.04 km
Apoapsis: 417.359 km
Periapsis: 414.45 km
RAAN: 80.3198 deg
Eccentricy: 0.0002141
Argument of periapsis: 140.9695 deg
Mean anomaly: 40.2969 deg
Mean motion: 15.50281737 rev/day
Mean motion (dot): 0.00011972 rev/day2
B* drag term: 0.00021529 1/REarth
Two-line elements (TLE)
Creation date: Aug. 2, 2025, 12:46 a.m.
Reference frame: TEME
Reference center: EARTH
Epoch: Aug. 1, 2025, 10:27 p.m. UTC
TLE line 0: 0 ISS (ZARYA)
TLE line 1: 1 25544U 98067A 25213.93559028 .00011972 00000-0 21529-3 0 9996
TLE line 2: 2 25544 51.6361 80.3198 0002141 140.9695 40.2969 15.50281737522250
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
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.
