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IRIDIUM 44, 25078

Orbit data source: Space-Track

IRIDIUM 44, 25078 is a payload satellite owned by Iridium (US) in LEO that was launched on Mon, 08 Dec 1997 UTC via a CHANG ZHENG 2C-III/SD launch vehicle from the Taiyaun Space Center, China (TSC). Payload-class satellites include a variety of spacecraft equipped with specific instruments for various scientific and technological missions. These include communications satellites like Starlink; space stations such as the ISS; scientific satellites like the Hubble; Earth observation satellites from companies like Planet Labs, Umbra, and HawkEye 360; GPS; miniature CubeSats for education and research; and military/defense satellites.

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<iframe src="https://www.satcat.com/sats-embedded/25078?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

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https://www.satcat.com/sats-embedded/25078?theme=dark&initialShowStats=false

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ISO8601 Format

Identifier

25078, 1997-077B

Orbit

LEO

Last TLE update

21 hours ago

Origin

Iridium Communications Inc. (US)

Manufacturer

Motorola

Mission

Non-operational Commercial Communications

Bus & Motor

LM700, Unknown motor

Mass

662 kg wet, 556 kg dry

Launch date (UTC)

1997-12-08 (28 years ago)

Launch vehicle

CHANG ZHENG 2C-III/SD

Launch site

Taiyaun Space Center, China (TSC)

Object type

Payload

Rocket body

Debris

Shape & HBR

Box + 2 Pan, 4.2 m

Radar Cross Section

5.666 m², Large (>1 m²)

Expand to show TLE details & history

TLE from 21 hours ago

0 IRIDIUM 44
1 25078U 97077B   25200.50559636  .00000298  00000-0  87781-4 0  9994
2 25078  86.3960 207.6145 0000617  46.4670 313.6581 14.40259462448350

Epoch: 2025-07-19T12:08Z

TLE epoch observation values (Epoch: 2025-07-19T12:08:03.525Z)

Latitude

0.00004°

Longitude

88.05808°

Altitude

760.397 km

Speed

7.474 km/s

True Right ascension

13h 50m 27s

True Declination

0° 00' 00"

Sunlit

Object was in daylight at epoch

Visualization orbit readout

Latitude

32.16815°

Longitude

-94.56415°

Altitude

762.004 km

Speed

7.476 km/s

Apparent Right ascension

04h 59m 31s

Apparent Declination

-3° 00' 10"

Sunlit

Object is in daylight

Visualization observer readout

Local Sidereal Time

21:42:44

Azimuth

79.752° E

Elevation

-16.585°

Doppler factor

Orbital elements

Apogee altitude

755.037 km

Perigee altitude

754.157 km

Semi-major axis

7,132.734 km

Eccentricity

0.00006

Inclination

86.396°

RAAN

207.6145°

Arg. of periapsis

46.467°

True anomaly

313.65298°

Mean anomaly

313.6581°

Eccentric anomaly

313.65554°

Mean motion

3.60296 °/min

Orbital period

99.92 mins

BSTAR

0.000087781

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Other satellites on launch #77 in the year 1997 (1997-12-08 UTC)

IRIDIUM 42, 25077

CZ-2C R/B, 25079 (Decayed)

CZ-2C DEB (DISPENSER), 25080 (Decayed)

CZ-2C DEB, 25081 (Decayed)

CZ-2C DEB, 25082 (Decayed)

CZ-2C DEB, 25083 (Decayed)

CZ-2C DEB, 25084 (Decayed)

IRIDIUM 44 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.
8 mins	2025-07-20 12:03:38.903Z	18.251° NNE	2025-07-20 12:07:38.903Z	89.715° E	32.62°	2025-07-20 12:11:38.903Z	149.598° SSE
5 mins	2025-07-20 13:45:38.903Z	305.808° NW	2025-07-20 13:47:38.903Z	274.564° WNW	19.738°	2025-07-20 13:50:38.903Z	235.153° WSW
8 mins	2025-07-21 00:56:38.903Z	177.014° S	2025-07-21 00:59:38.903Z	157.353° SSE	43.617°	2025-07-21 01:04:38.903Z	4.449° NNE

Co-orbital & Co-planar RSOs

Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions

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Authenticating...

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Check out IRIDIUM 44, 25078 on other resources

View IRIDIUM 44, 25078 on NASA - NSSDCA Website

View IRIDIUM 44, 25078 on Heavens-Above

View IRIDIUM 44, 25078 on Keep Track

View IRIDIUM 44, 25078 on Celestrak

View IRIDIUM 44, 25078 on Gunter's Space Page

Satcat and Kayhan Space are not affiliated with NASA, Celestrak, Heavens-Above, Keep Track, or Gunter's Space Page.