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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https://www.satcat.com/sats-embedded/25544?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

25544, 1998-067A

Orbit

LEO

Last TLE update

14 hours ago

Origin

National Aeronautics and Space Administration (NASA) (ISS)

Manufacturer

Khrunichev

Mission

Operational Civil Spaceship

Bus & Motor

77KS, Unknown motor

Mass

20,351 kg wet, ~19,000 kg dry

Launch date (UTC)

1998-11-20 (27 years ago)

Launch vehicle

PROTON-K

Launch site

Tyuratam Missile And Space Complex (TTMTR)

Object type

Payload

Rocket body

Debris

Shape & HBR

Cyl + 2 Pan, 109 m

Radar Cross Section

160.273 m², Large (>1 m²)

Expand to show TLE details & history

TLE from 14 hours ago

0 ISS (ZARYA)
1 25544U 98067A   25166.90950966  .00008572  00000-0  15677-3 0  9995
2 25544  51.6368 313.4089 0001513 253.5073 106.5750 15.50222697514962

Epoch: 2025-06-15T21:49Z

TLE epoch observation values (Epoch: 2025-06-15T21:49:41.634Z)

Latitude

-0.00001°

Longitude

81.55757°

Altitude

417.11 km

Speed

7.662 km/s

True Right ascension

20h 53m 38s

True Declination

0° 00' 00"

Sunlit

Object was in full shadow at epoch

Visualization orbit readout

Latitude

45.78759°

Longitude

-155.42663°

Altitude

421.537 km

Speed

7.664 km/s

Apparent Right ascension

08h 03m 19s

Apparent Declination

6° 21' 59"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

22:54:11

Azimuth

50.611° ENE

Elevation

-29.267°

Doppler factor

Orbital elements

Apogee altitude

417.612 km

Perigee altitude

415.556 km

Semi-major axis

6,794.721 km

Eccentricity

0.00015

Inclination

51.6368°

RAAN

313.4089°

Arg. of periapsis

253.5073°

True anomaly

Unknown

Mean anomaly

106.575°

Eccentric anomaly

Unknown

Mean motion

3.87513 °/min

Orbital period

92.9 mins

BSTAR

0.00015677

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Other satellites on launch #67 in the year 1998 (1998-11-20 UTC)

ISS DEB, 28409 (Decayed)

ISS DEB, 28410 (Decayed)

ISS DEB, 28411 (Decayed)

ISS DEB, 28412 (Decayed)

ISS DEB, 28386 (Decayed)

ISS DEB, 28635 (Decayed)

ISS DEB, 28792 (Decayed)

ISS DEB, 29191 (Decayed)

ISS DEB, 29257 (Decayed)

ISS DEB, 29638 (Decayed)

ISS DEB, 29639 (Decayed)

ISS DEB (SOCKET EXT), 29681 (Decayed)

ISS DEB (CAMERA), 29677 (Decayed)

ISS DEB, 30425 (Decayed)

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	2025-06-16 13:31:35.170Z	267.79° W	2025-06-16 13:33:35.170Z	310.235° NW	28.076°	2025-06-16 13:36:35.170Z	33.632° NE
4 mins	2025-06-16 18:25:35.170Z	342.154° N	2025-06-16 18:26:35.170Z	14.783° NNE	30.132°	2025-06-16 18:29:35.170Z	96.488° ESE

Authenticating...

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Check out ISS (ZARYA), 25544 on other resources

View ISS (ZARYA), 25544 on NASA - NSSDCA Website

View ISS (ZARYA), 25544 on Heavens-Above

View ISS (ZARYA), 25544 on Keep Track

View ISS (ZARYA), 25544 on Celestrak

View ISS (ZARYA), 25544 on Gunter's Space Page

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