ISS (ZARYA), 25544

Orbit data source: Space-Track

The International Space Station (ISS) is a collaborative project involving NASA, Roscosmos, ESA, JAXA, and CSA. It is the largest human-made structure in low Earth orbit (LEO). It serves as a microgravity laboratory where scientific research is conducted in various fields, such as astrobiology, astronomy, meteorology, and physics. Astronauts have continuously inhabited the ISS since Nov 2000, and the space station supports testing spacecraft systems and equipment needed for long-duration missions to the Moon and Mars.

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ISS (ZARYA) details
Identifier
25544, 1998-067A
Orbit
LEO
Last TLE update16 hours ago
Origin
Flag of ISSNASA JSC (ISS)
ManufacturerKhrunichev
MissionOperational Civil Spaceship
Bus & Motor77KS, Unknown motor
Mass20,351 kg wet, ~19,000 kg dry
Launch date (UTC)
1998-11-20 (26 years ago)
Launch vehicle
PROTON-K
Launch site
Tyuratam Missile And Space Complex (TTMTR)
Object type
Payload
Rocket body
Debris
Shape & HBRCyl + 2 Pan, 109 m
Radar Cross Section160.273 m², Large (>1 m²)

Expand to show TLE details & history

TLE from 16 hours ago
0 ISS (ZARYA)
1 25544U 98067A   25044.92910252  .00013306  00000-0  23995-3 0  9999
2 25544  51.6374 197.5145 0004014 316.7506 186.7432 15.50090175496044
Epoch: 2025-02-13T22:17Z
Definitive object data (Epoch: 2025-02-13T22:17:54.457Z)
Latitude27.89604°
Longitude-125.78628°
Altitude420.381 km
Speed7.661 km/s
True Right ascension23h 31m 33s
True Declination27° 44' 49"
Sunlit
Object was in daylight at TLE epoch
Visualization TLE readout
Latitude3.66343°
Longitude-107.27347°
Altitude418.952 km
Speed7.66 km/s
Apparent Right ascension02h 19m 28s
Apparent Declination-19° 26' 40"
Sunlit
Object is in daylight
Visualization observer readout
Local Sidereal Time16:33:20
Azimuth64.375° ENE
Elevation-54.779°
Doppler factor1
Orbital elements
Apogee altitude419.698 km
Perigee altitude414.243 km
Semi-major axis6,795.108 km
Eccentricity0.0004014
Inclination51.6374°
RAAN197.5145°
Arg. of periapsis316.7506°
True anomaly186.7378°
Mean anomaly186.7432°
Eccentric anomaly186.7405°
Mean motion3.87479 °/min
BSTAR0.00023995
Orbital period92.91 mins
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ISS (ZARYA) Visibility forecast

Observer location: undefined°, undefined

Span
Click to sort rows by Start time (UTC) header in descending order
Start Az.
Max El. time (UTC)
Max El. Az.
Max El.
End time (UTC)
End Az.
4 mins2025-02-14 18:15:27.864Z344.78° N2025-02-14 18:17:27.864Z38.868° NE21.874°2025-02-14 18:19:27.864Z78.674° E
4 mins2025-02-14 19:52:27.864Z281.159° WNW2025-02-14 19:53:27.864Z248.869° W34.63°2025-02-14 19:56:27.864Z150.84° SSE
5 mins2025-02-15 12:33:27.864Z226.66° WSW2025-02-15 12:35:27.864Z195.801° SSW43.694°2025-02-15 12:38:27.864Z55.182° ENE
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