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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25544 intel report (Beta)
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ISS (ZARYA) radio frequencies
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Edit Public Description
Identifier
Orbit
Last TLE update
8 hours ago
Origin
Manufacturer
Khrunichev
Mission
Operational Civil Spaceship
Bus & Motor
77KS, Unknown motor
Mass
20,351 kg wet, ~19,000 kg dry
Launch date (UTC)
Launch vehicle
Launch site
Object type
Shape & HBR
Cyl + 2 Pan, 54.5 m
Radar Cross Section
160.273 m², Large (>1 m²)
Expand to show TLE details & history
TLE from 8 hours ago
0 ISS (ZARYA)
1 25544U 98067A 25232.46847203 .00013114 00000-0 23692-3 0 9993
2 25544 51.6355 348.4629 0003387 244.7503 115.3135 15.50052228525134Epoch: 2025-08-20T11:14Z
TLE epoch observation values (Epoch: 2025-08-20T11:14:35.983Z)
Latitude
-0.00002°
Longitude
-149.2329°
Altitude
418.299 km
Speed
7.661 km/s
True Right ascension
23h 13m 51s
True Declination
0° 00' 00"
Sunlit
Visualization orbit readout
Latitude
Unknown
Longitude
Unknown
Altitude
Unknown
Speed
Unknown
Apparent Right ascension
Unknown
Apparent Declination
Unknown
Sunlit
Visualization observer readout
Local Sidereal Time
10:21:00
Azimuth
Unknown
Elevation
Unknown
Doppler factor
Unknown
Orbital elements
Apogee altitude
419.384 km
Perigee altitude
414.781 km
Semi-major axis
6,795.219 km
Eccentricity
0.00034
Inclination
51.6355°
RAAN
348.4629°
Arg. of periapsis
244.7503°
True anomaly
115.34858°
Mean anomaly
115.3135°
Eccentric anomaly
115.33104°
Mean motion
3.8747 °/min
Orbital period
92.91 mins
BSTAR
0.00023692
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Other satellites on launch #67 in the year 1998 (1998-11-20 UTC)
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. |
|---|---|---|---|---|---|---|---|
| 5 mins | 2025-08-21 10:38:57.443Z | 232.723° WSW | 2025-08-21 10:40:57.443Z | 237.004° WSW | 42.868° | 2025-08-21 10:43:57.443Z | 52.135° ENE |
| 5 mins | 2025-08-21 17:08:57.443Z | 302.243° NW | 2025-08-21 17:10:57.443Z | 247.864° W | 43.777° | 2025-08-21 17:13:57.443Z | 134.433° SE |
Co-orbital & Co-planar RSOs
Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions
Click to sort rows by RSO header in ascending order | Click to sort rows by Country header in ascending order | Click to sort rows by Type header in ascending order | Click to sort rows by Inclination Δ header in ascending order | Click to sort rows by RAAN Δ header in ascending order | Click to sort rows by Coplanar Angle header in ascending order | Click to sort rows by SMA Δ header in ascending order | Click to sort rows by Orbital period header in ascending order | Click to sort rows by <5km Md TCA header in ascending order |
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Event ID | Pc | Md | Secondary | Secondary name | Country | Click to unsort rows by TCA header |
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Authenticating...
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